13results about How to "Guaranteed centrality" patented technology

The invention relates to the field of MEMS device packaging, in particular to a high-vacuum MEMS device packaging process, which comprises the following steps: after bonding of an MEMS device is completed, pre-fixing a getter into a tube shell, so that the getter is at least electrically connected with a pair of pins on the tube shell; configuring a power supply plugging assembly and an activation tool in the vacuum chamber; the vacuum degassing tube shell is assembled on the activation tool, the pair of pins, electrically connected with the getter, on the tube shell is electrically connected with the power supply plug-in assembly, the getter is electrified and activated through the power supply plug-in assembly, and compared with a traditional high-temperature heating mode for the whole packaging device, the whole packaging device can be prevented from being heated, and the packaging efficiency is improved. Getter activation and seam welding procedures are completed at a time, and a high vacuum environment and good sealing performance of a device in the packaging process are ensured.

The invention relates to a ceiling antenna based on bidirectional gain. The ceiling antenna comprises a bottom plate, an omnidirectional radiation oscillator and two reflecting plates. A through hole is formed in the mounting surface of the bottom plate, the omni-directional radiation oscillator penetrates through the through hole through the bottom and is connected with the core wire, the two reflecting plates are arranged on the side of the mounting surface and define a reflecting area, the omni-directional radiation oscillator is located in the reflecting area, and when the reflecting plates are arranged in a mirror symmetry mode, the center point of the omni-directional radiation oscillator is coplanar with the symmetry plane of the reflecting plates. The distance between the reflecting plates is in positive correlation with the distance between the reflecting plates and the first plane in the direction perpendicular to the first plane. According to the design, signal radiation is effectively concentrated to a long and narrow space by accurately configuring the relationship between the reflecting plate and the omnidirectional radiation oscillator, the problem of insufficient signal coverage of a traditional antenna in long and narrow environments such as a gallery is solved, bidirectional gain of the antenna is realized through mirror symmetry and optimal configuration of the reflecting plate, and the signal coverage uniformity is ensured. And the signal coverage effect is improved.

The invention provides a low-voltage isolating switch with an adjustable wire inlet end, which comprises a seat body and a cover plate fixedly connected to the upper end of the seat body, the lower end of the cover plate is fixedly connected with a camera and a light supplementing lamp, a movable cavity is formed in the seat body, the inner wall of the movable cavity is connected with a knife holder and a wiring contact seat, the knife holder is rotatably connected with a power connection knife switch, and the power connection knife switch is rotatably connected with the wiring contact seat. The upper end of the wiring contact seat is fixedly connected with a knife switch clamping piece which is electrically contacted with the electric knife switch and limits the electric knife switch; images of metal wires can be shot through the camera, features in the images are analyzed through an image processing algorithm, so that the metal wires made of different materials are distinguished, after the metal wires are distinguished as aluminum wires, the driving mechanism can be controlled to drive the terminal base to rotate, and the copper-aluminum transition contact base is rotated and adjusted to the original position of the wiring contact base. And then the metal wire is directly inserted into the copper-aluminum transition contact seat and screwed tightly, so that the wiring work can be completed. By automatically identifying and classifying the metal wires, the wiring workload of wiring personnel is reduced, and the wiring efficiency is improved.

The utility model provides a lengthened valve rod high platform hard sealing ball valve which comprises a valve body, a heightening support and a valve rod, a packing groove is formed in the side wall of a rod hole, a first containing groove is formed in the top of the valve body, a limiting ring is arranged at the bottom of the heightening support, a first hard sealing ring is arranged in the first containing groove, and a second hard sealing ring is arranged at the bottom of the packing groove. The outer ring of the second hard sealing ring abuts against the side wall of the packing groove, and the inner ring of the second hard sealing ring abuts against the valve rod. Through cooperation of the first hard sealing ring, the first containing groove and the limiting ring, the heightening support is sealed, the first hard sealing ring can provide a better limiting function, the heightening support is limited, the situation that the heightening support is low in price in the installation process is avoided, and the centrality of the heightening support is improved. And on the basis of ensuring the centrality of the heightened bracket, the valve rod is limited through the design of the hard sealing ring II, so that the valve rod has better centrality, and various related parameters of the valve are improved.

The present invention discloses a double-station laser cutting machine, which relates to the technical field of laser cutting machines, and comprises two sets of coiling machines, leveling machines, cutting platforms and conveying lines arranged in parallel, wherein a base frame is fixedly connected between the coiling machine and the leveling machine, the leveling machine and the conveying line are arranged at the head and tail ends of the cutting platform, a laser cutting head is arranged above the cutting platform, and further comprises: a material anti-tilt mechanism and an adjustment and adaptation mechanism. The double-station laser cutting machine adopts a double-station design, so that the laser cutting head can operate continuously without being interrupted due to the transportation of materials. It is modified on the basis of the original laser cutting machine, and the modification cost is low. It makes up for the defect that the cutting head of the traditional intermittent cutting machine frequently stops operating, so that the cutting head can operate uninterruptedly, and the operating efficiency is greatly improved. The cutting range of the cutting area can be flexibly adjusted according to the width of the material to meet the cutting requirements of coatings of different widths, and the application range is wide.

The utility model discloses an efficient pillow type full-automatic packaging machine, and particularly relates to the field of packaging equipment, which comprises a machine body, a packaging device arranged on the machine body and used for packaging processing materials, and a belt conveyor body arranged on one side of the machine body and connected with the packaging device, the inner side of the portal frame is rotationally connected with a bidirectional lead screw, the inner side of the portal frame is fixedly connected with a guide sliding rod located below the bidirectional lead screw, the bidirectional lead screw and the guide sliding rod are provided with a pair of threaded transmission blocks, each threaded transmission block is provided with a distance adjusting structure, and the distance adjusting structures are movably arranged on the guide sliding rod. Each distance adjusting structure is provided with a buffer assembly, and each buffer assembly is provided with a calibration plate. The lower pillow type packaging machine solves the technical problems that the adjustability of the conveying position of the current lower pillow type packaging machine for feeding packaging materials is poor, and the packaging quality is easily reduced due to the inclination of the angle of the packaging materials and the deviation of the position of the packaging materials.

The invention relates to the technical field of non-uniformly distributed oil and gas reservoir transformation, and particularly discloses a soluble bridge plug for a casing deformation well, which comprises a limiting joint, a connecting pull rod, a rubber sleeve, a slip assembly, a central pipe, a locking ring and an expansion component, and the expansion component comprises a first cone expansion piece and a second cone expansion piece; the first cone expansion piece is arranged on the central pipe in a sleeving mode and located between the rubber sleeve and the slip assembly, one end of the first cone expansion piece is used for limiting the other end of the rubber sleeve, the other end of the first cone expansion piece is used for expanding one end of the slip assembly, and the first cone expansion piece is connected to the other end of the connecting pull rod; the second cone expansion part is used for expanding the other end of the slip assembly, and the locking ring is connected into the second cone expansion part and slidably connected to the connecting pull rod. The soluble bridge plug can achieve effective packing in an ultra-large annular gap after passing through a casing change point, it is guaranteed that the casing change well passing through the casing change point transformation process is smoothly implemented, section loss is reduced, and the reservoir transformation efficiency is improved.

The invention relates to the technical field of advertising boards, in particular to a foldable dynamic display LED intelligent advertising board which comprises a lamp board base, an advertising board set, a power system and a hinge assembly, the advertising board set comprises a first lamp board, a second lamp board, a third lamp board and a fourth lamp board, the first lamp board is installed on the lamp board base, the power system is installed on the first lamp board, and the hinge assembly is installed on the second lamp board. The back of the first lamp board is connected with the back of the second lamp board through a hinge assembly, the back of the second lamp board is connected with the back of the third lamp board through a hinge, and the back of the third lamp board is connected with the back of the fourth lamp board through a hinge assembly. According to the multi-face folding LED advertising board, the advertising board sets are connected through the hinge assemblies, a worker rotates the lamp board to enable the hinge assemblies to move, multi-face folding of the advertising board is completed, disassembly, assembly, folding and transportation of the LED advertising board are facilitated, the LED lamp bead faces can be effectively protected after folding is completed, and the LED lamp bead faces are prevented from being collided and damaged in the stacking and transportation process of the LED advertising board.

The utility model discloses an automatic balling production line bin top dust remover, which comprises a dust removal cylinder, a dust removal cover head, a reverse air impact guide pipe, a pulse electromagnetic valve, a high-pressure air storage tank and a filter element, the filter element is arranged in the dust removal cylinder, and air outlet holes are distributed in the surface of the reverse air impact guide pipe part in the middle of the interior of the filter element. And an outer port of the anti-air-flushing guide pipe is connected with a port on one side of the pulse electromagnetic valve. The back flushing device has the beneficial effects that the part, with the air outlet hole structure, of the back flushing guide pipe is arranged in the filter element, and high-pressure air in the high-pressure air storage tank is output and discharged from the air outlet hole structure in combination with the opened pulse electromagnetic valve, so that back flushing can be carried out by high-pressure air flow from the inside of the filter element to the outside; meanwhile, the guide-in opening formed in the bottom of the dust removal barrel faces downwards, so that the falling centrality of impurities such as dust is guaranteed, and the cleaning period is prolonged.

This invention discloses a vortex nozzle based on the boundary layer effect. It includes an inlet structure, a vortex assembly, and an outlet structure. The vortex assembly consists of at least two coaxial vortexes stacked together, each with a central hole that forms an axial jet channel. The wavy surfaces of adjacent vortexes form a curved channel that converges towards the central hole, with the curved surfaces forming troughs at the edge of the central hole. The axial spacing h is less than the diameter D of the central hole. Water enters the curved channel tangentially from the outer edge, smoothly changes direction due to the boundary layer effect, and forms a vortex at the central hole, resulting in an axial jet that achieves a near 90° turn. When used for rotary drive, at least two circumferentially distributed nozzles spray in opposite directions along the tangent, forming a force couple. This invention features low energy loss, concentrated jet, and strong reaction force.

The utility model relates to elevator technical field discloses a kind of ventilation device of lift, including elevator car and fan fixedly installed at the top of elevator car, the inner wall of the elevator car is fixedly connected with flow guide box, the inside of the flow guide box is transversely provided with air passage, the inside of the flow guide box is longitudinally provided with the air outlet groove being communicated with air passage. The utility model breaks through the air flow limitation of traditional ventilation fan by air passage, air outlet groove in flow guide box, cooperate top wall air outlet hole one with side wall air outlet hole two, adjustment assembly drives silica gel sealing block sliding, can realize top and lateral air outlet switching, enlarge ventilation range, improve efficiency and cooling effect, air outlet hole two is downward to avoid direct blowing passenger, improve comfort, silica gel sealing block is isosceles trapezoid, with fixed frame air passage matching, avoid air leakage, adjustment assembly is fixed sliding plate by magnet magnetic attraction, stabilize silica gel sealing block and be convenient for operation, satisfy different ventilation needs.

The utility model relates to a wind scooper which comprises a fan cover and a wind shield, one end of the fan cover is connected with one end of the wind shield, and the wind shield extends in the direction far away from the other end of the fan cover in the axial direction of the fan cover. By arranging the fan cover installed at the rear end of the motor and the wind shield installed above the motor body, a complete air channel from the rear end to the front end of the motor can be formed, and it is guaranteed that after air is blown out by the cooling fan at the rear end of the motor, air flow can be guided to the positions of a front bearing and an end cover of the motor; the problem that an existing fan cover cannot guide air in the area is solved, and effective heat dissipation of the front bearing and the end cover of the motor is achieved. Meanwhile, when the motor is used, the wind shield covers the upper end of the motor body and can be used for shielding falling objects such as dust and flying catkins, heat dissipation is prevented from being hindered due to the fact that the dust and the flying catkins form a heat insulation layer on cooling fins of the motor, and the heat dissipation efficiency is further improved due to the arrangement of the wind shield.

The utility model belongs to the catalytic production technical field, concretely relates to a kind of quick cooling device for catalyst production preparation, including base, the top of the base both sides position is equipped with support frame, cooling tank is fixedly installed between the upper end position of support frame, the inner side wall of cooling tank is fixedly installed with cooling material pipe, the outer side wall intermediate position of cooling material pipe is fixedly set with condensing coil, the outer side wall of condensing coil is fixedly set with heat insulation sleeve, cooling material pipe is tightly set with condensing coil outside, the contact area of surrounding type layout with cooling material pipe is increased, can more efficiently absorb the heat of catalyst in pipe, accelerate cooling speed;Heat insulation sleeve outside condensing coil can reduce heat to outside dissipation, ensure that cooling energy concentrated effect is applied to catalyst, improve cooling efficiency.