19results about How to "Close in time" patented technology

This utility model discloses an underground civil defense ventilation structure for ventilation of underground civil defense facilities. It includes: several sets of ventilation pipe assemblies installed between the underground wall and the outside wall for ventilation of the underground civil defense facilities; each ventilation pipe assembly consists of an inner air module, a connecting pipe, and an outer air module. One end of the connecting pipe is connected to the inner air module, and the other end is connected to the outer air module; one end of the inner air module is connected to the underground civil defense facility, and the other end is connected to the connecting pipe; one end of the outer air module is connected to the external space of the underground civil defense facility, and the other end is connected to the connecting pipe; an outer air duct is installed on the outer air module, and at least two outer air branch pipes are installed on the outer air duct. One end of each outer air branch pipe is connected to the outer air duct, and the other end is connected to the external space of the underground civil defense facility. This solves the problems of ventilation efficiency and airflow control in underground civil defense passage structures.

The utility model relates to the technical field of aluminum cathode carbon block groove milling, in particular to an aluminum cathode carbon block groove milling device which comprises a groove milling machine. The deviation preventing mechanism comprises electric push rods fixedly connected to the two sides of the inner wall of the slot milling machine, the telescopic ends of the electric push rods are fixedly connected with a push plate, and one side of the push plate is fixedly connected with two air storage cylinders; according to the device, flexible constant-pressure clamping of the aluminum cathode carbon block is achieved through an electric push rod, an air storage cylinder, a first spring, an exhaust pipe and a rubber plate, timely closing of the electric push rod is achieved through the rubber plate and a pressure sensor, and then it is guaranteed that the rubber plate abuts against the side face of the aluminum cathode carbon block in a constant-pressure mode; compared with an existing cathode carbon block which is prone to deviation in the milling process, the cathode carbon block is stably clamped, excessive clamping of the cathode carbon block for aluminum is avoided, and the milling effect of the cathode carbon block for aluminum is guaranteed.

The utility model relates to the technical field of mixers, and discloses a pharmaceutical mixer which comprises a box body, a cover plate is fixedly mounted at the top of the box body, and a box body is fixedly mounted at the top of one side of the box body; an electric heating pipe is fixedly installed on one side wall of the box body, a discharging pipe is arranged in the middle of the lower surface of the box body in a communicating mode, and a valve is installed on the discharging pipe. A motor is fixedly mounted in the middle of the upper surface of the cover plate, a stirring rod is fixedly mounted at the bottom of a transmission shaft of the motor, and a feeding hopper and an observation window are arranged on two sides of the top of the cover plate. By arranging the spiral blade, the charging barrel and the material pump, the material pump can be started, and the three groups of branch pipes with different heights are communicated with the charging barrel, so that the material pump can be matched with the charging barrel and the branch pipes to pump materials at different positions in the box, the materials can be mixed by the spiral blade after entering the charging barrel, and then the materials are fed into the box body through the feeding pipe; a unique stirring structure and a mixing mode are added, so that various pharmaceutical raw materials can be uniformly mixed, and the consistency of medicine components is guaranteed.

The utility model discloses a temperature control locking structure applied to a fireproof door, which relates to the technical field of fireproof doors and comprises a door frame, a first door plate, a second door plate, a first traction block and a limiting column. The linkage mechanism comprises a first door plate, a second door plate, a first traction block, a first driving block, a threaded rod, a second driving block, a second traction block and a door handle, the first driving block, the threaded rod and the second driving block serve as core components, synchronous closing and opening can be achieved under cooperation of the first traction block and the second traction block, and the automatic door closing function is achieved; when a fire breaks out, manual operation is not needed, the fireproof door can be closed in time, and time is bought for personnel evacuation and fire rescue.

The embodiment of the invention discloses a water level detection control method for a heat preservation tank of a water purifier, and relates to the technical field of water purifiers, and the method comprises the following steps: under the triggering of a water supplementing signal and / or a water taking signal, collecting a real-time water level height sequence of the heat preservation tank within a preset time, and fitting the real-time water level height sequence to obtain a real-time water level height sequence; determining an incidence relation model of the water level height and the water level change time; and when the heat preservation tank is in the water supplementing process or the water taking process, the operation parameters of the water pump and / or the heating body are / is controlled according to the incidence relation model. The real-time real flow velocity can be dynamically measured through the incidence relation model of the water level height and the water level change time, and control errors caused by flow velocity fluctuation are avoided; under the dynamic operation working condition, the operation parameters of the execution mechanism are adjusted in real time through the incidence relation model, the technical problem that the water taking amount is inaccurate in the water taking process is solved, the water level rising trend can be monitored in real time according to the model during water supplementing, and water level overflow is effectively prevented.

This invention discloses an automatic feeding method and system for cold direct reduced iron (DRI), relating to the field of DRI storage and transportation technology. The method includes: a storage step, in which cold DRI is input into a sealed finished product silo and protected by nitrogen gas; a vehicle position display step, in which N receiving positions are sequentially set below the finished product silo along the vehicle's travel direction, and a positioning detection element identifies the vehicle's parking position and generates an arrival trigger signal; a feeding execution step, in which the feeding valve is opened in response to the arrival trigger signal; and a feeding termination step, in which the feeding valve is closed when the feeding time reaches a preset threshold or the material level reaches an upper limit threshold. This enables automatic, safe, and efficient feeding of cold DRI, effectively reducing labor costs and preventing material spillage.

This utility model relates to a water pump for a dental irrigator, comprising a pump housing; a drive motor is fixedly installed inside the pump housing, and a transmission gear is fixedly installed at the output end of the drive motor; a circular rotating plate is provided inside the pump housing, and the circular rotating plate has end face teeth; a base is provided on the circular rotating plate, and a working contour surface is provided on the base; a pump body is also provided inside the pump housing, and a drive rod is provided on the pump body; the working contour surface is composed of one or more adjacent and connected arc-shaped contour surfaces; the drive rod forms surface contact or line contact with the arc-shaped contour surface; the arc-shaped contour surface includes a return arc-shaped surface, a first stop arc-shaped surface, a lift arc-shaped surface, and a second stop arc-shaped surface; the return arc-shaped surface and the lift arc-shaped surface are eccentrically positioned with respect to the circular rotating plate; the two sides of the second stop arc-shaped surface are respectively connected to the lift arc-shaped surface and the lift arc-shaped surface, or the two sides of the second stop arc-shaped surface are respectively connected to the lift arc-shaped surface and the return arc-shaped surface on the adjacent arc-shaped contour surface. This utility model has an ingenious structure and is convenient and practical.

This utility model belongs to the technical field of steel grating, specifically disclosing a drainage ditch steel grating that is easy to clean. It includes a main body and seepage channels. Five sets of seepage channels are arranged between the front and rear of the main body. A left fixing block is fixed to the rear left side of the bottom of the main body, and a right fixing block is fixed to the rear right side of the bottom of the main body. A threaded rod is laterally movably connected between the left and right fixing blocks. This easy-to-clean drainage ditch steel grating utilizes the threaded rod movably connected between the left and right fixing blocks. Pushing the stop block horizontally towards the hidden slot above the slot exposes the handle. Rotating the handle rotates the second gear connected at the bottom, thereby pushing the first gear meshing on the left side. The threaded rod rotates between the left and right fixing blocks, and under the restriction of the front and rear limiting slots, pushes the stop plate horizontally to cover the seepage channels, or removes the stop plate to expose the seepage channels, thus solving the problem of inconvenient opening and closing.

The application discloses a flying probe machine with accurate positioning function and dust-free type for PCB, relates to the technical field of PCB detection, and comprises a machine body, a fixing mechanism, a top seat, a workbench and a detection mechanism. The top seat and the workbench are arranged at the upper and lower ends of the machine body respectively. Compared with the flying probe machine for the current PCB detection, the flying probe machine is provided with a feeding assembly and a guide assembly. Different sizes of PCBs are transported into the fixing mechanism through the cooperation of the feeding assembly and the guide assembly, so that the PCBs integrated with high-end chips can be accurately moved to the middle position of the fixing mechanism, and a solid foundation is provided for the accuracy of subsequent probe testing. In addition, the feeding assembly and the guide assembly in the application can directly transport new PCBs into the fixing mechanism after the detection of the PCBs is completed, thereby avoiding the trouble that the traditional flying probe machine for PCB detection needs to take out the previously detected PCB and then place the new PCB to be detected into the fixing mechanism.

This application discloses a detection method, device, and electronic device for building intelligent engineering. The method includes: a server receiving a first luminance measured by a first luminance sensor, a second luminance measured by a second luminance sensor, and a third luminance measured by a third luminance sensor, wherein the first, second, and third luminance sensors are arranged sequentially along the height direction of a spherical shell, with the second luminance sensor located between the first and third luminance sensors; comparing the first, second, and third luminance values, and determining a maximum luminance value based on the comparison result; comparing the maximum luminance value with a preset luminance threshold; and confirming that light pollution has been reached when the maximum luminance value is greater than or equal to the preset luminance threshold, and controlling the motorized curtains to close. This application has the effect of facilitating the timely closing of motorized curtains.

This invention discloses a gas ball valve with automatic shut-off function for gas leak detection, relating to the field of gas ball valves. Addressing the problems of existing gas ball valves having limited functionality, lacking gas leak detection, failing to provide timely feedback on gas leaks, and exhibiting low safety, this invention proposes the following solution: It includes a ball valve protective tube body, within which a valve ball is disposed. A first valve stem is mounted on the top of the valve ball. A detection frame is mounted on the side of the first valve stem away from the valve ball. A second valve stem is mounted on the side of the detection frame away from the first valve stem. A rotating handle is mounted on the side of the second valve stem away from the detection frame. A threaded rotating rod is mounted inside the valve ball body. This invention features a novel structure, is easy to use, provides thorough gas leak detection with high accuracy and good detection effect, and promptly shuts off the gas ball valve upon gas leak, thus improving the safety of the gas ball valve.

The invention discloses a double-path circulation intelligent water meter which comprises a water meter body, a water inlet pipe, a water return pipe and two first mounting holes. The water inlet meter core is arranged in one of the first mounting holes; the water return meter core is arranged in the other first mounting hole; the water inlet controllable valve is arranged on the water inlet pipeline; the backwater controllable valve is arranged on the backwater pipeline; and the main controller is configured to open the water inlet controllable valve to fill water into the water inlet pipeline when the pressure in the water meter body is lower than a preset threshold value, and if the pressure in the water inlet pipeline is slowly reduced, the water inlet controllable valve is closed, and an alarm is given. Components of the two-way circulation intelligent water meter can be conveniently assembled, and the use reliability of the two-way circulation intelligent water meter is improved.

The present disclosure provides an electrostatic protection circuit and a semiconductor chip. The electrostatic protection circuit is connected between a first voltage terminal and a second voltage terminal, and includes a detection circuit connected between the first voltage terminal and the second voltage terminal, for generating a transient control signal in response to an electrostatic pulse between the first voltage terminal and the second voltage terminal; a delay circuit connected to an output terminal of the detection circuit, for delaying or enhancing a driving capability of the transient control signal and outputting a delay signal; a discharge circuit connected between the first voltage terminal and the second voltage terminal; a control circuit connected to an output terminal of the delay circuit and a control terminal of the discharge circuit, for controlling the discharge circuit to discharge electrostatic according to the delay signal; and a reset circuit connected to the control terminal of the discharge circuit and the output terminal of the detection circuit, for resetting the potential of the control terminal of the discharge circuit according to the potential of the output terminal of the detection circuit after the electrostatic discharge ends.

The utility model discloses a multifunctional sofa storage cabinet, which comprises a sofa body and a sofa armrest at least arranged on one side of the sofa body, the sofa armrest comprises a frame body, a first storage cabinet is arranged in the frame body, the first storage cabinet is in sliding connection with the interior of the frame body, and an end cover body is arranged at the end part of the first storage cabinet; a table top body is arranged on the upper portion of the frame body and comprises a first table top and a second table top, the bottom of the first table top is rotationally connected with the frame body through a rotating mechanism, a second storage cabinet is arranged between the second table top and the frame body, and the second table top and the first table top are driven to rotate around the rotating mechanism. The table top body is perpendicular to the frame body, and the second storage cabinet is exposed; according to the sofa, the functions of storing objects and supporting the table top are achieved, beverages can be conveniently placed, portable electronic equipment can be conveniently supported, and meanwhile other functions of the sofa are not affected.

The bulk cement dispatching system comprises a first discharging pipe communicated with a bulk cement bin, a discharging valve used for controlling opening or closing of the first discharging pipe and a second discharging pipe, and the discharging valve is electrically connected with a control system and used for controlling the first discharging pipe. The rear end of the second discharging pipe is connected with a bulk head and used for conveying bulk cement to a bulk vehicle, and a metering device is arranged at the front end of the second discharging pipe and used for weighing the bulk cement passing through the second discharging pipe. The metering device is electrically connected with the control system, and the control system is electrically connected to control the opening degree of the discharging valve according to the metering result of the metering device. According to the bulk cement delivery system, the cement loading capacity can be reliably controlled.

The application discloses a flicker detection circuit, a PCB and a driving power supply. The flicker detection circuit comprises an input processing unit, an output unit, a main control unit, a power supply unit and a flicker detection unit. The input end of the input processing unit is used for connecting an external power supply. The output end of the input processing unit is connected with the input end of the output unit, the power supply end of the main control unit and the input end of the power supply unit respectively. The output end of the power supply unit is connected with the power supply end of the flicker detection unit. The input end of the flicker detection unit is connected with the output unit. The output end of the flicker detection unit is connected with the detection end of the main control unit. The output end of the main control unit is connected with the input processing unit. When the flicker detection unit detects an abnormal output, the flicker detection circuit disclosed by the application feeds back an abnormal signal to the main control unit, and the main control unit closes the output to realize the timely closing of a lamp with an emerging flicker problem.

The utility model discloses a graphite furnace atomic absorption spectrophotometer, which comprises a shell and a flame atomizer, the shell is provided with a movable door capable of being opened and closed, the movable door is detachably connected with a heat dissipation mechanism, the heat dissipation mechanism comprises a heat dissipation frame, a protective cover, an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are oppositely installed on the front face and the back face of the protective cover, the heat dissipation frame is arranged in the shell, and the protective cover is connected and fixed to the movable door in an inserted mode. According to the flame graphite furnace, through the arranged heat dissipation mechanism, heat dissipation can be conveniently carried out on a combustion area in the flame graphite furnace, a combustor in the flame atomizer is prevented from damaging a shell of the photometer, through the protective cover, the air inlet pipe and the air outlet pipe, dissipation of the temperature above the combustor can be conveniently accelerated, and meanwhile through the detachable heat dissipation mechanism, the heat dissipation efficiency is improved. And the atomic absorption spectrophotometer can be conveniently assembled with the spectrophotometer and the heat dissipation mechanism can be conveniently maintained, so that the atomic absorption spectrophotometer has heat dissipation and protection effects.

The utility model relates to the technical field of heating pipe network valve, concretely is a kind of heating pipe network valve quick closing device, including valve body, the bottom fixedly connected with transmission case of valve body, the inside between valve body is equipped with ball, the inside lower issue of ball is inserted with valve core, the top fixedly connected with adjusting box of valve body, the front side fixedly connected with controller of adjusting box, the inside of transmission case is equipped with quick closing mechanism, the inside of adjusting box is equipped with adjusting mechanism.The utility model has realized the quick closing of valve body and flow rate regulation, has improved the timeliness and adjustability of device.

The utility model relates to a punching feed device for container processing, and has the advantages that the servo motor drives the driving lead screw to rotate, the sliding base can be driven to slide stably, the servo motor can control the number of rotation and the rotating speed accurately through the microcontroller such as singlechip, the position of the sliding base can be controlled accurately, the sliding base can drive the several damping rubber roller top plates to move accurately through the several push plates, the feed pushing is realized, the push plates can be pushed to the specified position accurately, errors are not prone to occur, the magnetic induction switch can be triggered through the magnetic induction switch and the corresponding inductive magnet, the servo motor can be turned off in time, the sliding base can be stopped after sliding to the position of the magnetic induction switch, the position of the magnetic induction switch can be adjusted through the position of the sliding base, so that the position can be adjusted as required.