62results about How to "Prevent import" patented technology

The invention belongs to the field of crystal preparation, and in particular relates to a device for preparing aluminum nitride crystals and a corresponding process. The invention provides the device and the process for preparing aluminum nitride crystals by adopting a spontaneous crystal seed method. The device comprises an inductive heating coil, an insulating layer, a crucible device and a crucible lifting device. The crucible device consists of a crucible body, a crucible cover and a cover sheet. A hole which is 1-2mm in diameter is formed in the crucible cover, the cover sheet is located above the crucible cover and completely shields the hole, and the area of the cover sheet is between those of the hole and the crucible cover. The preparation process comprises the two steps of: (1) obtaining aluminum nitride single crystals through spontaneous crystallization at the hole to be used as the crystal seeds due to limit of anisotropic crystalline characteristic of aluminum nitride and geometric dimension of the hole at lower temperature; and (2) obtaining large-dimensional aluminum nitride crystals by weakening the anisotropic crystalline characteristic of aluminum nitride at high temperature and meanwhile slowly adjusting the position of the crucible by lifting through the lifting device.

The invention discloses a fire-proof protecting device of a shock-insulation rubber supporting seat. The fire-proof protecting device comprises upper heat-insulation profiles, lower heat-insulation profiles, aluminum silicate fiber blankets connecting pieces and fire-proof blocking materials. The fire-proof blocking materials are adhered between the contact faces of the upper heat-insulation profiles and upper layer columns. The lower heat-insulation profiles are arranged on the top faces of lower layer columns in a masonry mode through fire-proof adhesives. The fire-proof blocking materials are adhered between the upper heat-insulation profiles and the lower heat-insulation profiles. The spaces between the upper heat-insulation profiles and the shock-insulation rubber supporting seat as well as between the lower heat-insulation profiles and the shock-insulation rubber supporting seat are filled with the aluminum silicate fiber blankets. Through a fire-proof protecting construction method, good fire-proof protecting for the shock-insulation rubber supporting seat can be achieved, it can be ensured that fire-proof protecting is not destroyed during shock-insulation supporting seat deformation, and meanwhile the method has the advantages of being convenient to operate and wide in application range.

A fan having a dust-proof apparatus includes: a casing having a passage; a rotation driving unit installed inside the casing; a plurality of blades positioned in the passage and coupled to a rotational shaft of the rotation driving unit so as to be rotated; and a dust-proof member installed at an entrance of the passage to cover the entrance of the passage, and integrally coupled to the blades so as to be rotated together with the blades. Since insects or big dusts can be prevented from being introduced according to an air flowing generated as the blades are rotated, and the coupling state between parts is firm. In addition, since the eccentricity is minimized, the parts are not damaged, and as a noise generation is restrained, so that reliability can be heightened.

The invention discloses a baking soda water fast preparation device for food production. The device structurally comprises a protection baffle, a power line, a transmission motor, a wiring groove, a handle, a stirring barrel, a working table surface, a control panel, a control cabinet, operation buttons, a display screen and fixing feet. The device has the advantages that a floating ball and a buoyancy push rod are controlled to ascend and descend according to the water level in a barrel body, and then a transmission rope drives a plug-pin transmission block and a plug-pin rod to move and disengage from limiting positions, so that a discharging plate conducts discharging; a material feeding port is sealed through a sealing plate during discharging, so that the situation that the material feeding port continues to discharge materials is prevented; a stirring switch is automatically triggered for stirring through a lifting plate, so that quantitative addition of the materials is achieved, and the preparation efficiency and quality are greatly improved.

Disclosed herein is a safety syringe. According to the safety syringe of the present invention, an adapter connected to an injection needle is threadedly coupled with the neck of a cylinder while interposing an O-ring therebetween. Thus, the movement of the injection needle is effectively prevented while in use, and thus the injection needle can be pricked accurately at a desired position of the patient's body. Since the adapter is formed with grooves, whereas a plunger is formed with two protrusions positioned diametrically opposite to each other so as to be inserted into the grooves, the adapter is rotated and then moved downwardly in accordance with the successive rotation and downward movements of the plunger after the adapter is released from the neck of the cylinder. The plunger is formed at its upper surface with a vertical rod extending upwardly from an eccentric position, whereas the adapter is defined with a conical cavity. The upper end of the rod is inserted into the cavity while being bent inwardly. When the injection needle is withdrawn into the cylinder, the injection needle is firmly tilted in a lateral direction due to the strong restoring force of the rod so that it can be collapsed simply against the inner surface of the cylinder. In addition, a circular plate is formed at a certain lower position of the plunger. The circular plate enables the user's fingers gripping the safety syringe not to come into contact with the plunger to be entered into the cylinder, thereby achieving the sanitary use of the safety syringe.

A labyrinth type self-locking device of a winder comprises a right cover and a right reel of the winder, and is characterized in that the inner side wall of the right cover is provided with a limit cavity and a fixing column, a screw hole is formed in the fixing column, a check clamp is arranged in the limit cavity and comprises a body, a round groove is formed in the body and provided with a penetrating hole, the body is arranged on the fixing column in a sleeving mode through the penetrating hole, a limit gasket is arranged in the round groove, a screw penetrates through the limit gasket to be in threaded fit with the screw hole of the fixing column, the other end of the body is provided with an elastic board and a pressing board, the pressing board is provided with a guide column, one side of the right reel is provided with a labyrinth type guide annular groove to be matched with the guide column, the labyrinth type guide annular groove comprises an outer annular groove, an inner annular groove and a middle check ring, the middle check ring is provided with a self-locking groove, a self-locking groove inlet, a self-locking groove outlet and an inner groove and outer groove switching channel, an inlet guide step is manufactured at the position, located on the self-locking groove inlet, of the outer annular groove, and a switching channel guide step is manufactured at the position, located the inner groove and outer groove switching channel, of the inner annular groove.

The invention relates to a lithium ion storage battery formation method, which comprises the following steps of: formation preparation: installing an air escape valve on a liquid injection hole-carrying terminal post of a battery, and connecting the battery to a formation device; parameter setting and formation starting: determining formation charge and discharge parameters according to parameters of lithium ion battery current, voltage and time, carrying out charge and discharge cycling for 3-5 times and stopping charging and discharging; unlatching or sealing a sealing plug and a valve body of an air escape valve according to internal pressure of the battery during the process of battery formation; formation accomplishment: stopping battery charge and discharge by the formation device and breaking a battery formation cable; placing the battery with the air escape valve in a drying compartment with humidity being less than 5%; dismantling the air escape valve, and sealing the liquid injection hole to complete formation. According to the formation method provided by the invention, the liquid injection hole of the battery is equipped with the air escape valve to release superfluous gas of the battery, prevent the electrolyte from overflowing and external water from introducing, enhance the generation of a compact SEI membrane during the formation process of the lithium ion storage battery and raise cycle life of the battery. The formation method is simple and has characteristics of high efficiency and low cost.

The invention relates to the technical field of noise reduction equipment, and specifically relates to a smart home indoor noise reduction device. The smart home indoor noise reduction device comprises a wall, a window, fixed plates, a noise reduction device, a fan, a first ventilation pipe, first air inlet holes, a first sound absorbing chamber, a second sound absorbing chamber, a third sound absorbing chamber, a fourth sound absorbing chamber, a humidity sensor, a controller, a humidifier, dehumidifier, a second ventilation pipe, first air outlet holes, a sound insulation plate, an air purifier, a sealing rubber pad, a third ventilation pipe, second air inlet holes, an electromagnetic valve, a fourth ventilation pipe and second air outlet holes, and is characterized in that the wall is provided with the window, the fixed plates are arranged on the indoor wall, the two fixed plates are respectively arranged above and below the window, and each fixed plate is provided with a sliding slot. The smart home indoor noise reduction device is easy to install and remove, and has excellent noise reduction processing for the outdoor noise. Meanwhile, the smart home indoor noise reduction device has the functions of air purification, humidification and dehumidification, is diversified in function, greatly meets requirements of people for the functions of the device and has very high practicability.

The purpose of the present invention is to provide a technique such that when forming an organic compound film on a substrate film in vacuum, vapor of an organic compound monomer can be generated at aconstant rate, thereby stabilizing the film formation rate. This vapor discharge apparatus discharges vapor of an organic compound monomer in vacuum and comprises: a vaporization unit 21 for vaporizing a liquid organic compound monomer; and a vapor discharge unit 22 that is in communication with the vaporization unit 21 and discharges the vapor of the organic compound monomer vaporized by the vaporization unit 21. The vaporization unit 21 is provided therein with a hollow vaporizer 40. The vaporizer 40 is configured such that a mist of the liquid organic compound monomer is introduced therein, the organic compound monomer mist 34 is heated and vaporized, and the organic compound monomer vapor is discharged to the vaporization unit 21.

The invention discloses an underwater high-pressure ultrasonic probe. The underwater high-pressure ultrasonic probe comprises a probe shell, wherein a probe wafer is arranged in the front part of the probe shell, a space between the rear part of the probe wafer and the probe shell is filled with a damping block, a pressure separation delay block is arranged on the front part of the probe wafer in an attaching manner, and the pressure separation delay block is a pressure-resisting part; the middle part of the pressure separation delay block is internally cut to form a sealing clamping shoulder, the pressure separation delay block is divided by the sealing clamping shoulder into a combination part which is close to the probe wafer and an extension part which is far away from the probe wafer, the front end of the probe shell pushes against the sealing clamping shoulder so as to enable the combination part to stretch into the probe shell, the combination part is matched with the probe shell in a sealing manner through a sealing part, and the extension part pushes the sealing clamping shoulder towards the end part of the probe shell through external water pressure, so that the self sealing of the sealing clamping shoulder and the probe shell can be realized. The underwater high-pressure ultrasonic probe has the advantages that the influence of high water pressure working environment can be effectively overcome, ultrasonic detection can be carried out under the high water pressure, the structure is reasonable, and the use is convenient.

The invention relates to the technical field, in particular to a high-efficiency spraying device for plastic dipping of a gauze element. The high-efficiency spraying device comprises a plastic dipping pool, wherein a reversing roller A and a reversing roller B are sequentially and rotatably mounted at the symmetrical positions, close to two sides of an upper port of the plastic dipping pool, of the surface of the inner wall of the plastic dipping pool, and a driving assembly is arranged at the position, above the bottom of the plastic dipping pool, in the side wall of the plastic dipping pool; and fanning assemblies are symmetrically arranged between the side walls of the plastic dipping pool and located on the two sides of the driving assembly. According to the high-efficiency spraying device for plastic dipping of the gauze element and a using method of the high-efficiency spraying device, fixing ring sleeves are fixedly connected with fan blades, so that the fan blades synchronously rotate along with the fixing ring sleeves, in the rotating process of the fan blades, due to the fact that the surfaces of arc-shaped blades and the fan blades generate certain pressure on the air, the air, located below the gauze element, in the plastic dipping pool rolls, and plastic powder at the bottom of the plastic dipping pool can be driven to rise, so that the situation that because plastic powder falls on the bottom surface of the plastic dipping pool, plastic dipping spraying of the gauze element is not thorough is effectively prevented, and the plastic dipping spraying machining quality of the gauze element is improved to a certain degree.

The object of the invention is a device (1) for axially fixing one end (9) of a Bowden cable (3), in particular a motor vehicle lock, comprising a housing (2), a Bowden cable (3), wherein the housing(2) has a receptacle (11), in which the end (9) of the Bowden cable (3) can be fixed, wherein the housing (2) has a means for introducing (12) the Bowden cable (3) into the receptacle (11) so that anincorrect assembly of the Bowden cable (3) can be prevented.

Provided is a control valve for a variable displacement compressor, with which the effects of refrigerant pressure on a main valve body can be effectively canceled out, and it is possible to avoid structural complications and size increases in physical constitution. A pressure-equalizing passage 15 is provided for guiding pressure Pc of a crank chamber exerted on a lower end of a main valve body 10 to a pressure-sensitive chamber 45, and causing the pressure Pc of the crank chamber to be exerted on an upper end of the main valve body 10, and when current conduction to (a solenoid part 30A of)an electromagnetic actuator 30 has been turned off (when a valve port 22 is fully open), intake pressure Ps is prevented from being guided into the pressure-sensitive chamber 45 from a Ps inlet/outlet27 (a Ps in/out chamber 28), the pressure Pc of the crank chamber is guided into the pressure-sensitive chamber 45 via the pressure-equalizing passage 15, and the pressure Pc of the crank chamber isexerted on both the upper and lower ends of the main valve body 10.

The invention discloses a communication method for scheduling control. The communication method is used for realizing data communication between an upper computer and a lower computer. The upper computer is used for sending published information to the lower computer, and the lower computer is used for sending feedback information to the upper computer, the published information and the feedback information both adopt a structural body form with verification information to send information. The method has the advantages that communication is reliable and safe, packet loss can be prevented, wrong control can be prevented when wrong information is imported, and whether data packet loss occurs or not can be verified; instant stop of the lower computer and efficient use of task information areeffectively controlled. According to the set sign check bit, a reconnection mechanism is combined to ensure that reconnection does not miss the reception of effective tasks during operation.

The invention discloses a vacuum-adsorbing screw loading device. The vacuum-adsorbing screw loading device comprises a base, fixing boards, an oblique board, a controller, a baffle, a first adapter, afirst connection opening, installation frames, limiting rods and sliding sleeves, wherein the fixing boards are connected with the outer side of the base through bolts, the oblique board is connectedwith the inner sides of the fixing boards through bolts, the controller is fixedly sleeved with the base, the baffle is fixedly connected with the inner side of the oblique board, the connection block is fixedly connected with the outer side of the baffle, the installation frames are fixedly connected with the inner side of the oblique board, the limiting rods are fixedly connected with the interiors of the installation frames, the sliding sleeves are fixedly connected with the inner sides of the limiting rods, driving tubes are slidingly connected with the interiors of the sliding sleeves, and air nozzles are fixedly connected with the interiors of the driving tubes. The vacuum-adsorbing screw loading device has the characters that leading-in of multiple screws can be prevented, an air duct is prevented from being blocked, and noise can be reduced.