17results about How to "Close tightly" patented technology

The invention relates to a regulation and control method and system for mine fireproof doors, a terminal and a medium, and belongs to the technical field of mine fireproofing. The regulation and control method comprises the steps that sensing data sent by sensors around each fireproof door are received; according to the multiple sets of sensing data, whether a fire occurs in the mine or not is judged; if yes, determining a target fireproof door according to the fire spreading area; acquiring personnel position information of workers around the target fireproof door; based on the personnel position information, whether a worker is on a fire spreading path and is located between the target fireproof door and a fire spreading boundary is judged; if yes, the closing degree of the target fireproof door is controlled according to the spreading speed of the fire; if not, the closing degree of the target fireproof door is controlled according to the fire behavior of the fire. The intelligent monitoring management system has the beneficial effect that intelligent monitoring management of the fireproof door can be conveniently realized according to the field environment.

The utility model relates to the technical field of oil-gas field development, in particular to a wellhead protector for oil-gas field development, which comprises a protector body, a support block, a top cover, a fastening component and a sealing component, the fastening component comprises an upper mounting ring, a lower mounting ring, a tension spring and a connecting component, and the top cover is rotatably arranged at the top of the support block. The top cover is turned over to close the opening of the supporting block, the sealing assembly enables the opening to be closed tightly, leakage is prevented, the tension spring is pulled, the two ends of the tension spring tension the upper mounting ring and the lower mounting ring respectively, and the top cover and the supporting block are connected and fixed through traction force of the tension spring. The upper mounting rings, the lower mounting rings and the tension springs are arranged on the outer walls of the supporting blocks and the top cover, meanwhile, the connecting components are used for assisting in connection and fixation, and therefore when the top cover needs to be opened, the top cover can be opened only by pulling the tension springs to be taken down from the lower mounting rings and turning over the top cover, and operation is convenient.

The application relates to the field of electric tools, and particularly discloses a flow guide control structure, a power head and an electric tool, wherein the flow guide control structure comprises a mounting seat, a shielding piece, a booster arm and a spring; a flow guide opening is arranged on the side surface of the mounting seat; the shielding piece is provided with a through hole matched with the flow guide opening; the shielding piece is slidingly arranged on the inner side surface of the mounting seat and is used for opening or closing the flow guide opening; the booster arm comprises opposite force receiving ends and a connecting end; the booster arm is hingedly arranged in the mounting seat and is connected with the shielding piece through the connecting end; the side surface of the mounting seat is provided with the shielding piece; the side of the shielding piece is provided with the spring; the connecting end of the booster arm is connected with the shielding piece; the force receiving end of the booster arm is connected with the bottom end of the battery pack; the force receiving end can reciprocally move along the inner side surface of the mounting seat according to whether the battery pack is pressed downward, so as to open or close the flow guide opening; the shielding piece on the mounting seat is independently connected with each battery pack and does not affect each other.

This utility model discloses an auxiliary device for improving the accuracy of gas chromatography determination of N,N-dimethylformamide in water, belonging to the technical field of N,N-dimethylformamide determination. This auxiliary device includes an auxiliary mechanism and a filtration mechanism. The auxiliary mechanism includes a housing with a door hinged to one side of the upper end via a pair of hinges. A water inlet pipe is installed at the upper end of the door, and a drain pipe is installed at the center of the bottom end of the housing. A limiting frame is installed at the bottom of the housing. The filtration mechanism includes a mounting frame with a pair of equal-dividing plates fixedly installed inside. Slide rails are installed on both sides of the mounting frame at the bottom of the pair of equal-dividing plates. A filter layer and an adsorption layer are slidably installed between the two pairs of slide rails. This utility model can effectively improve the accuracy of gas chromatography determination of N,N-dimethylformamide and has high practical value.

A switch cabinet with a dustproof structure disclosed by the present invention comprises a cabinet body, one side surface of the cabinet body is provided with a ventilation opening, the inner side surface of the cabinet body is fixedly provided with a fixed frame, one side surface of the fixed frame is rotatably provided with a first rotating shaft, and the outer side surface of the first rotating shaft is fixedly provided with a baffle plate. A first transmission gear is fixedly installed at one end of the first rotating shaft, a first limiting rod is fixedly installed on the surface of one side of the fixing frame, a sliding rod is arranged on the outer side of the first limiting rod in a sliding mode, a first rack is fixedly installed on one side of the sliding rod, and a second rack is fixedly installed on the surface of the other side of the sliding rod. A first shaft seat is fixedly installed on the surface of one side of the cabinet body, a second rotating shaft is rotatably installed on the surface of one side of the first shaft seat, a second transmission gear is fixedly installed at one end of the second rotating shaft, and a first rotating disc is fixedly installed at the other end of the second rotating shaft. The device has the beneficial effects of being reasonable in structure, convenient to control and adjust and capable of reducing dust entering.

The utility model relates to the technical field of valves, in particular to an ultrahigh pressure pipeline sealing valve which comprises a water inlet pipeline and a valve body installed on one side of the water inlet pipeline, a fixing assembly is arranged at the top of the valve body, a connecting assembly is arranged at the top of the fixing assembly, a first sealing assembly is arranged on the connecting assembly, and the first sealing assembly comprises a valve rod. A hand wheel is arranged at the top of the valve rod, a first cover plate is arranged at the end, away from the hand wheel, of the valve rod, and a cover plate leather sheath is arranged on the outer side of the first cover plate. The hand wheel drives the valve rod to rotate, the valve rod rotates to drive the first cover plate to ascend and descend, so that the cover plate leather sheath closes the opening of the valve body, the valve can be closed more tightly through the cover plate leather sheath, and the valve rod ascends and descends to drive the connecting rod to ascend and descend. And the cover plate II slides on a sliding plate slot formed in the sliding plate through the connecting block, so that the water inlet pipeline is closed.

The utility model relates to the field of propaganda devices, and discloses a propaganda column which comprises a buried device box, a rotating sleeve is fixedly connected to the upper surface of the buried device box, a rotating rod is rotatably inserted into the rotating sleeve, a conical installation body is fixedly connected to the upper end of the rotating rod, and the conical installation body is in a triangular pyramid shape. Display columns are fixedly connected to the three side faces of the conical mounting body, a mounting plate is fixedly connected into an inner cavity of the buried device box, the inner cavity of the buried device box is divided into an upper layer and a lower layer by the mounting plate, and a driving motor is fixedly connected to the inner wall of the bottom side of the buried device box; the side, corresponding to the driving motor, in the inner cavity of the buried device box is fixedly connected with a power source, the multi-face display effect is achieved, more content can be displayed at the same time, the difficulty and cost for replacing the displayed content are reduced, the service life of the bulletin board is prolonged, and the maintenance convenience of the bulletin board is improved.

The utility model belongs to the field of cake decoration, particularly relates to an extruder on a cake decoration 3D printer, and aims to solve the problems that in the existing cake decoration process, the interior of a placing pipe is inconvenient to clean after cream in the placing pipe is used up, the cream is not convenient to replace, the process is relatively inconvenient, the complexity is increased, and the production cost is reduced. According to the technical scheme, the device comprises a base, the top of the base is provided with an installation frame and a containing cylinder, and the containing cylinder is fixedly installed at the bottom of the installation frame through a plurality of bolts. When the device is used, cream can be squeezed out from the bottom of the placing barrel so as to meet the requirements of different mounting patterns, the interior of the placing barrel can be conveniently cleaned or the cream can be conveniently replaced, the placing barrel can be easily disassembled when necessary, the process is convenient and fast, the operation efficiency and applicability are improved, and the device is suitable for popularization and application. And meanwhile, the mounting frame and the placement barrel can conveniently move according to a preset track, so that the decoration 3D printing effect is conveniently achieved.

This application provides a container. The container includes a body, a top-hinged door, a main shaft, a lock head, a locking rod, and a shaft connector. The main shaft passes through a base frame. The lock head is rotatably connected to the base frame between a locked position and an open position. One end of the locking rod is rotatably connected to the lock head. The shaft connector is rotatably connected to the main shaft via a main shaft connecting shaft, and the shaft connector is connected to the other end of the locking rod, so that rotation of the main shaft can drive the lock head to rotate between the locked position and the open position. On a projection plane perpendicular to the axial direction of the locking rod, the projection of the locking rod and the projection of the main shaft connecting shaft at least partially overlap. Therefore, the at least partial overlap of the locking rod projection and the main shaft connecting shaft projection ensures that the connection position of the locking rod and the shaft connector is as close as possible to the main shaft connecting shaft in the vertical direction. This reduces the deformation of the locking rod when the lock head locks the top-hinged door, thereby allowing the top-hinged door to close the opening tightly and minimizing material leakage.

The present invention belongs to the field of valve technology, and in particular relates to a stainless steel signal gate valve, comprising a valve body, a valve cover, a valve stem, a valve plate and a handwheel, wherein a controller and a motor driven by the controller are arranged outside the valve cover, a rotating member for driving the kit to rotate is arranged between the upper end of the kit and the handwheel, the rotating member is connected to the motor, the kit is rotatably connected to a clamping member that clamps the kit and drives the kit to be divided into two halves, and the first clamping member and the second clamping member are used to open to the left and right sides, and the kit is driven to be divided into two halves, thereby canceling the clamping and restriction of the valve stem, so that after the valve stem is separated from the support of the kit, the valve stem and the valve plate move downward by their own weight to achieve a sealing effect, and quickly fall to achieve rapid closure, so that it can be used normally, and if an emergency situation requires rapid closure, or if the conveyed material changes or there are impurities that need to be urgently blocked, this operation can be used to achieve a rapid cut-off effect.

The invention discloses a self-discharging type liquid injection needle valve, and belongs to the technical field of lithium battery liquid injection. The self-discharging type liquid injection needle valve solves the technical problems that when an existing self-discharging type liquid injection needle valve is in a standby state, a flow channel is prone to crystallization, and sealing is not tight due to plug eccentricity. The self-discharging type liquid injection needle valve comprises a valve body assembly, a valve port assembly, a driving assembly, a diaphragm assembly and a first elastic reset piece. The diaphragm assembly is used for isolating the flow channel from the driving assembly, and a valve element piece of the diaphragm assembly is matched with the valve port assembly to control the liquid injection port. The driving assembly and the diaphragm assembly are in disconnected connection, and selective transmission of driving force is achieved. The first elastic reset piece applies elastic force for closing the liquid injection opening to the diaphragm assembly. The driving assembly and the diaphragm assembly are arranged to be of a disconnected structure, automatic closing is achieved through the elastic reset piece, runner crystallization is effectively prevented, the leakage problem caused by assembly eccentricity is solved, and the diaphragm valve has the advantages of being reliable in sealing and low in maintenance cost.

This utility model provides an energy metering box with a protective device, including a box body, a metering module installed inside the box body, and a protective device on the front side of the box body. The protective device includes a fixed frame, multiple protective door panels slidably installed within the fixed frame, and a rotatable fixed door panel. A driving component is installed between the fixed door panel and the fixed frame, and a support component is installed between the protective door panel and the fixed frame. The protective door panel is rotatably mounted on the support component, and a first gear is fixedly installed on the driving component. A driving linkage is also fixed on the fixed frame. The driving component drives the fixed door panel to rotate, and the first gear on it drives a second gear on the driving linkage, which in turn drives all the transmission linkages through a series of meshing third gears, realizing the synchronous sliding opening or closing of multiple protective door panels. This design allows the entire protective device to operate in a coordinated manner, opening quickly and closing tightly, improving operational convenience and overall protective effectiveness.

The utility model relates to road construction technical field especially relates to a kind of warm mix construction device of steel slag modified asphalt.The utility model provides a kind of warm mix construction device of steel slag modified asphalt, including base, storage frame, stirring bucket, connecting pipe and motor, base rear portion is fixedly connected with storage frame, storage frame top is fixedly connected with stirring bucket, stirring bucket is forty-five degree inclination, connecting pipe is connected and communicated between stirring bucket rear side and storage frame top, stirring bucket upper portion is fixedly connected with motor, and the output shaft of motor penetrates stirring bucket interior.The utility model realizes material automatic transfer by connecting pipe between inclined stirring bucket and lower storage frame, and in combination with first baffle and its clamping block and bayonet, so that steel slag modified asphalt after mixing can quickly enter storage frame and store temporarily, so as to avoid the problem that traditional equipment needs to stop and wait after mixing.

The application discloses an automatic door opening and closing device and a refrigerator, and relates to the technical field of the refrigerator, which comprises an upper door opening and closing device and a lower door opening and closing device, the upper door opening and closing device and the lower door opening and closing device are symmetrical along the direction perpendicular to the central axis of the door opening and closing device, and are fixedly connected through a connecting rod; the upper door opening and closing device comprises a framework, a large spring and a small spring are sleeved on the framework, the lower end of the framework is connected with a speed reducer motor through a transmission shaft, and the supporting plate of the speed reducer motor is fixed on the connecting rod. The application can realize automatic uniform-speed opening and closing of the door, has a large door opening angle, is convenient to use, saves time and effort, and has good user experience.

The utility model relates to the technical field of automobile valve manufacturing, in particular to a one-way valve and a two-way stop valve of an automobile thermal management system, which comprise a valve casing, a valve cavity arranged in the valve casing, a first annular limit retaining edge arranged in the valve cavity, a runner outlet arranged at one end of the valve cavity, and a runner inlet arranged at the other end of the valve cavity. The limiting cover is arranged at one end, corresponding to the flow channel outlet, of the valve cavity; a second annular limiting blocking edge is arranged on the periphery of the valve plug, the valve plug is movably arranged in the valve cavity and limited between the first annular limiting blocking edge and the limiting cover, the second annular limiting blocking edge is limited by the first annular limiting blocking edge in the process that the valve plug moves towards the flow channel inlet, and a sealing ring is hooped on the valve plug. The sealing ring abuts against the side, close to the first annular limiting blocking edge, of the second annular limiting blocking edge. The spring abuts against the valve plug and applies elastic force towards the inlet direction of the flow channel to the valve plug. Abnormal sound and damage caused by impact between the valve element and the valve body in the using process can be reduced.

The one-way valve comprises a water inlet connector, a channel pointing up and down is arranged in the water inlet connector, a light valve ball moving freely in a falling mode is arranged in the channel, the channel corresponds to a narrow opening in the lower portion of the light valve ball, and the diameter of the narrow opening is smaller than that of the light valve ball. In a normal state, the light valve ball is placed on the narrow opening and covers the narrow opening, and a normally-open flow channel is formed between the outer wall of the light valve ball and the inner wall of the channel above the narrow opening. According to the one-way valve for the water dispenser waterway, the water inlet connector is blocked through the self weight of the light valve ball, the light valve ball can be pushed up when the water flow pressure at the lower end of the water inlet connector is larger than the gravity of the light valve ball, a channel is opened, and when water enters the upper end of the water inlet connector, downward acting force is further applied to the light valve ball; the narrow opening in the water inlet connector is closed more tightly, and the purpose of one-way low-flow opening is achieved.