47results about How to "To achieve switching" patented technology

The invention belongs to the technical field of music teaching equipment, in particular to a music score and fingering electronic lamplight analog display method and a keyboard instrument auxiliary teaching device. The method comprises the following implementation steps: (1) converting a music score or an MIDI (Musical Instrument Digital Interface) file into an electronic music score file which can be decoded by using a display device together with the fingering information of each pitch; (2) saving the converted electronic music core file in mobile storage equipment, and connecting the mobile storage equipment to the display device; (3) erecting the display device above keys corresponding to each key, and displaying pitches, lengths, rhythms, beats, themes, harmonics, combos and fingering in the form of light by using the display device along with the playing of an electronic music score file. By directly placing an electronic music score display screen on the keys in the auxiliary teaching device for implementing the method, the problem of matching of hands and eyes of a learner is solved completely, and the learning interest of the learner is increased greatly.

The invention discloses a steam device and an operation and use method thereof. The method comprises the steps that a steam brush and a power supply seat are connected; the power supply seat suppliespower to a steam generator in the steam brush and heats the steam generator; meanwhile, a lithium battery in the steam brush is charged through the power supply seat; an indicating lamp indicates thatthe steam generator reaches prese temperature; the steam brush is taken off from the power supply seat and disconnected with the power supply seat; and a switch element on the steam brush is closed,power is supplied to a water pump in the steam brush through the lithium battery, a liquid medium is conveyed into the steam generator through the water pump, and the liquid medium is heated into steam through the steam generator. Due to the fact that the lithium battery is arranged in the steam brush, after the steam generator is heated to certain temperature, the steam brush can be divorced fromdependence on electric supply to complete normal use work, and the use flexibility is improved.

The invention discloses a novel high-efficiency low-energy consumption boil off gas (BOG) recovery process with cold storage function, and a device thereof. The device comprises a LNG storage tank, a nitrogen storage tank, a compressor, a first cold storage tank, an expansion machine, a BOG condensation recovery device, and a second cold storage tank. According to the device, nitrogen from the nitrogen storage tank is subjected to compression so as to obtain compressed nitrogen; and the compressed nitrogen is delivered through one of the cold storage tanks (which is processed via cold storage at a precooling preparing stage) for cooling, is delivered into the expansion machine after temperature reducing, is delivered into the BOG condensation recovery device for heat exchange with BOG gas after further temperature reducing so as to liquify BOG gas, and then is delivered through the other cold storage tank, and at last is delivered into the nitrogen storage tank after temperature increasing. The novel high-efficiency low-energy consumption boil off gas (BOG) recovery process is simple in process flow; some professional devices are not necessary; automatic controlling is realized; nitrogen can be recycled; waste caused by nitrogen discharging is reduced; investment is reduced; and industrial popularization and market application prospect is promising.

The embodiment of the invention discloses a certificate management method and device, electronic equipment and a storage medium. The method comprises the following steps: determining a target public key corresponding to the second encryption mode from the corresponding relationship between the encryption mode included in the target certificate issuing record corresponding to the certificate identifier and the public key, and adjusting a target byte representing a public key attribute in the full-text byte based on the target public key so as to enable the public key attribute represented by the adjusted target byte to be matched with the target public key, generating a new certificate according to the adjusted full-text byte, and issuing the new certificate to the node, the certificate identifier of the new certificate being the same as the certificate identifier of the original certificate. In the embodiment of the invention, the certificate identifier and the identity field attributeof the issued new certificate are the same as those of the original certificate, the consistency of identity verification between the new certificate and the original certificate is ensured, and theswitching use of the certificate between the first system corresponding to the first encryption mode and the second system corresponding to the second encryption mode is realized.

The invention relates to the technical field of punching equipment, in particular to a corrugated paper punching machine which has the advantage of preventing a punch from being blocked after punchingcorrugated paper for a long time. The corrugated paper punching machine comprises a punching assembly, a transverse moving assembly, a stamping assembly, an intermittent feeding assembly, a frameworkdrive assembly and fixed-length cutting assemblies, wherein the punching assembly is rotatably connected onto the transverse moving assembly; the punching assembly and the transverse moving assemblyare in engaged transmission; the transverse moving assembly is connected on the stamping assembly in a sliding mode; the transverse moving assembly and the stamping assembly are in threaded transmission; the stamping assembly is fixedly connected on the intermittent feeding assembly; the framework drive assembly is fixedly connected on the intermittent feeding assembly; rear moving plates of the two fixed-length cutting assemblies are connected on the framework drive assembly in a sliding mode; and both the fixed-length cutting assemblies are in engaged drive with the framework drive assembly.

The invention relates to a process system for air-blasting dehumidification through smoke waste heat of a hot-blast stove. The process system comprises a dryer, a regenerator, two sets of conveying and lifting devices and a drying agent. A drying agent discharge opening is formed in the bottom of the dryer, an air inlet is formed in the lower portion of the dryer, a drying channel is formed in the middle portion of the dryer, and a drying agent feed opening and an air outlet are formed in the top of the dryer. A drying agent discharge opening is formed in the bottom of the regenerator, a hot-blast stove smoke inlet is formed in the lower portion of the regenerator, a drying agent regeneration channel is formed in the middle portion of the regenerator, and a drying agent feed opening and a hot-blast stove smoke outlet are formed in the top of the regenerator. The air inlet is connected to an air blower, the air outlet is connected to an inlet of the hot-blast stove, a smoke outlet of the hot-blast stove is connected to the hot-blast stove smoke inlet through a preheater, and the drying agent is circularly conveyed in the dryer and the regenerator through the two sets of conveying and lifting devices. The system indirectly dehumidifies air through the smoke waste heat of the hot-blast stove, a low-temperature environment does not need to be provided, pollution to the air cannot be caused, the energy sources are saved, and the blast furnace coke ratio is reduced.

The invention relates to the technical field of medical instruments, and in particular relates to a skin surface disinfecting device for abdominal operation of the obstetrics and gynecology department. The device comprises an outer barrel, a rotation plate, a baffle plate, liquid storage barrels, a liquid draining device and a liquid change device, wherein the outer barrel is of a barrel-shaped structure having a first through hole in the middle of the upper end, having the open lower end, and having a baffle plate fixedly connected at the 1/5 position from the lower end, a second through holeis arranged in the middle of the baffle plate, the rotation plate is arranged at the lower part of the baffle plate, a first sliding chute is arranged at the outer ring of the rotation plate, the lower end of the outer barrel is clamped in the first sliding chute, and the liquid draining device is arranged at the upper end of the rotation plate. The device is reasonable in structural design, in the liquid change device, a driving stirring plate and driven grooved wheels form the angles of 120 degrees, therefore, the switching use of 75% alcohol, 5% iodophor and 0.025% iodophor is realized, meanwhile, through the liquid draining device, during switching of each disinfectant, a threaded rod pushes a rubber plug to move upwards, the residual previous disinfectant on a liquid outlet pipe is drained under the vacuum condition, thus cross infection or dilution is avoided, therefore, the functions are complete, the use is convenient, and the popularization prospect is good.

The invention discloses a light beam switching mechanism of a laser engraving and cutting machine. The light beam switching mechanism is used for engraving or cutting, and comprises a high-power laser, a high-performance laser, a red light diode, a first reflector frame, a second reflector frame, a third reflector frame and a laser head, wherein the high-power laser, the high-performance laser and the red light diode are correspondingly arranged; the high-power laser and the high-performance laser are reflected to the laser head through the first reflector frame, the second reflector frame and the third reflector frame in sequence; and the red light diode is reflected to the laser head through the second reflector frame and the third reflector frame in sequence. The high-power laser and the high-performance laser are combined, so that the light beam switching mechanism is convenient to use; and a reflector is driven by longitudinal movement, longitudinal rotation and transverse movement to achieve switching use of the high-power laser and the high-performance laser and alignment of red light.

The invention belongs to the technical field of Beidou satellite ground-level systems, and provides a controller for a Beidou satellite ground-level system. According to the invention, by pressing a rotating part, an output gear on the rotating part is switched and engaged between a first transfer gear and a second transfer gear which are staggered in a front-back direction; the rotating part is rotated to drive the transfer gears meshed with the rotating part through the output gear, then the transfer gears drive corresponding input gears, the output gear drives the corresponding rotating disc to rotate, an input interface on the rotating disc corresponds to a plug-in interface on the shell, and then the input interface corresponds to an output connector on external equipment in a plug-in mode, so switching use of different high-precision board cards is achieved; and thus, the problem that the high-precision board cards need to be disassembled for replacement is avoided, multiple high-precision board cards can be installed to achieve an expansion purpose, and whole working efficiency is improved.

Provided is a remote bilateral balancing composite driver soft transmission system for agricultural greenhouse sunshading and heat preserving. The system comprises a power assembly, guide wheels, a greenhouse framework mesh bed, a quilt rolling shaft, a heat preserving quilt, an upper pulling rope and a lower pulling rope; the power assembly is connected with remote balancing composite drivers through the guide wheels, the upper pulling rope and the lower pulling rope; the heat preserving quilt is rolled on the quilt rolling shaft; the remote balancing composite drivers are connected through the quilt rolling shaft; one end of each secondary driving rope is fixed to the top of a greenhouse, the other end of each secondary driving rope is fixed to the bottom of the greenhouse, and each secondary driving rope is wound around a secondary driving roller of the corresponding remote balancing composite driver for one round; one end of each main driving rope is fixed to a main driving roller of the corresponding remote balancing composite driver, and the other end of each main driving rope is fixed to the bottom of the greenhouse. According to the remote bilateral balancing composite driver soft transmission system for agricultural greenhouse sunshading and heat preserving, a guarantee is provided for development of internal heat preserving from a pushing curtain type to a rolling type, the internal heat preserving effect is greatly improved, the material cost and the installation and maintenance cost are reduced, working is stable, stressing is uniform, and the security coefficient is high.

The invention relates to the technical field of machinery. Disclosed is a hemodialysis internal fistula repair instrument capable of easily switching storage, movement and treatment states. The hemodialysis internal fistula repair instrument comprises a rack, a controller and an irradiation device; the rack comprises a three-legged supporting bottom frame, and the three-legged supporting bottom frame comprises a hollow supporting rod and three supporting legs arranged in the circumferential direction; the rack further comprises a sliding bottom frame; the sliding bottom frame comprises a pulley base, a sliding rod and pulleys; at least three pulleys are installed below the pulley base; the sliding rod is fixedly connected to the upper portion of the pulley base, and the sliding rod is connected with the hollow supporting rod in a sliding mode and locked through a locking mechanism; the pulley base is provided with notches for the supporting legs to penetrate through when the supporting legs are unfolded for supporting; the top of the hollow supporting rod is connected with a foldable balance arm, and the top of the foldable balance arm is provided with the irradiation device; and the controller is mounted in an area above the hollow supporting rod connected with the supporting legs. Switching of three states of storage, movement and treatment is achieved.

The invention discloses a terminal with a metal rear housing, relates to the field of radio frequency antennas, and is used for realizing a radio frequency antenna design under the condition of a full-metal rear housing. The full-metal rear housing comprises a first metal structural member and a second metal structural member which are connected with each other in an insulating manner; a metal antenna radiation body is arranged on the inner side of the first metal structural member; a perpendicular projection of the first metal structural member is overlapped with the metal antenna radiation body; a predetermined vertical distance is reserved between the first metal structural member and the metal antenna radiation body; the first metal structural member is electrically connected with themetal antenna radiation body through at least one line; each line is connected in series with a switch; when the switches are turned on, the first metal structural member is conducted with a signal source of the terminal, and the metal antenna radiation body and the first metal structural member which are used as direct radiation bodies of an antenna emit radio frequency signals of a first frequency band group; and when the switches are all turned off, the metal antenna radiation body stimulates the first metal structural member to emit a radio frequency signal of a second frequency band group.

The invention relates to an automobile main line wheel cover edge pressing system. The automobile main line wheel cover edge pressing system is provided with an edge pressing mechanism for conducting edge pressing operation on an automobile main line wheel cover; the edge pressing mechanism is installed on a Y-direction adjusting mechanism; and the Y-direction adjusting mechanism drives the edge pressing mechanism to get close to or get away from the automobile main line wheel cover. The automobile main line wheel cover edge pressing system aims at overcoming the defects existing in the prior art, and is low in input cost and good in attachment degree after edge pressing.

The invention relates to the technical field of coalescence degassing and oil removal, and particularly discloses a large-flow efficient coalescence degassing and oil removal device for offshore oilfield production sewage. The device comprises a bottom plate, a round box is fixedly installed at the top of the bottom plate through supporting legs, an outflow pipe communicated with the round box is arranged on the outer side of the round box, and a cylinder is rotationally installed in the middle of the top end of the round box. According to the invention, the cylinders can be switched for use, and the coalescence corrugated plate can be flushed during switching, so that the cylinders can be switched for use and the coalescence corrugated plate can be cleaned when coalescence degassing and oil removal are carried out on high-flow sewage, and the situation that too many impurities are attached to the coalescence corrugated plate to influence use is avoided; according to the coalescence corrugated plate, normal use of the coalescence corrugated plate can be guaranteed when large-flow sewage is treated, the water outlet holes can be dredged in the barrel switching process, the situation that impurities in the sewage block the water outlet holes to affect normal water outlet of the coalescence corrugated plate can be avoided, and the coalescence corrugated plate is worthy of application and popularization.

The invention discloses a liquid storage supply device. The liquid storage supply device comprises a liquid output mechanism, a first liquid storage box, a second liquid storage box, a first pump body, a first liquid supply pipeline, a first oil returning pipeline, a second pump body, a second liquid supply pipeline, a second oil returning pipeline, a first electromagnetic valve and a second electromagnetic valve. Through opening or closing of the first electromagnetic valve and the second electromagnetic valve, the first pump body or the second pump body is controlled to pump liquid in the liquid storage boxes to the corresponding liquid supply pipelines, the liquid is further input to the liquid output mechanism, meanwhile, through opening or closing of the first electromagnetic valve and the second electromagnetic valve, and remaining liquid in the liquid output mechanism is recycled to the corresponding liquid storage boxes through the corresponding liquid returning pipelines. According to the liquid storage supply device, switching use of at least two kinds of liquid can be achieved, meanwhile, the device does not need to clean the whole device, only the liquid output mechanism needs to be cleaned, labor intensity of persons can be reduced, and production efficiency is improved.