10results about How to "Good dustproof" patented technology

The utility model relates to an ultrasonic gas meter flow regulator. The flow regulator is characterized in that the flow regulator is mounted at a flow channel air inlet of the flow channel and sequentially comprises a scattering layer, a developing layer and a rectifying layer which are integrally formed through injection molding or are assembled and connected in a split manner. The utility model aims to change the original gas flow field distribution, stabilize the flow field characteristics of the metering module and improve the metering precision of the ultrasonic gas meter, and has the characteristics of strong adaptability, convenience in installation and positioning, good flow field stability, high precision and the like.

The utility model relates to the technical field of currency counters, and discloses a one-and-a-half-opening sorting currency counter with a thickness measuring function, which comprises a one-and-a-half-opening sorting currency counter main body, a storage groove and a heat dissipation opening, the top of the one-and-half-opening sorting currency counting machine body is provided with an integrally-formed storage groove, an opening in one side in the storage groove is connected with a display screen through a damping rotating shaft, an inner cavity is formed in the one-and-half-opening sorting currency counting machine body, and one end of the top in the inner cavity is provided with a correlation type laser distance measuring sensor through a screw. A magnetic head infrared is installed at the other end of the top in the inner cavity through a screw, a cash outlet table is arranged in the inner cavity, cash outlet wheels are installed at the two ends of the cash outlet table through reserved openings, and an automatic zero clearing sensor is embedded in the position, located between the cash outlet wheels, of one side of the cash outlet table. The one-and-a-half-opening sorting currency counter has the function of measuring the thickness of paper money, after use is completed, the display screen can be conveniently rotated into the storage groove, storage is facilitated, and the dustproof and waterproof effects are remarkable.

The utility model belongs to the field of high -power test equipment especially relates to a heat pipe radiator for test equipment, including heat conduction matrix, heat pipe, heat dissipation matrix, heat conduction matrix is connected with heat dissipation matrix, it is equipped with a plurality of through -hole in the middle heat conduction matrix, the fixed connection of heat pipe has on heat dissipation matrix, the evaporation section of heat pipe is close to heat conduction matrix, the fixed connection of a plurality of radiating fins has on heat dissipation matrix, and the condensation section of radiating fin is close to heat pipe. Advantage is: has high -efficient heat dissipation, good dustproof, space utilization high -efficient, the advantage that heat is conducted downward, can effectively solve the heat dissipation problem of high -power test power supply equipment under special working condition, improves the operating stability and life of equipment.

The invention discloses a polyether organic silicon composite material and a method for preparing synthetic leather from the polyether organic silicon composite material. Therefore, the preparation method comprises the following steps: firstly, designing and synthesizing polyether carbamate-based polysiloxane containing 2-3 functional siloxy groups at double molecular ends (DPS) or single molecular end (MPS) by utilizing a chemical reaction; the preparation method comprises the following steps: preparing a polyether organic silicon composite material from alpha, omega-dialkoxysilyl-terminated polyether MS, oil-soluble color paste, a wetting dispersant, leather collagen powder, an alcohol-water solvent, an organic metal catalyst and the like; based on the characteristic that siloxy is easy to hydrolyze, polycondense and crosslink under the action of water vapor, the composite material is coated on the surface of base cloth subjected to bottom adhesion treatment of amino silane ring-opening modified epoxy resin, and then greenhouse hydrolytic polycondensation, crosslinking curing and surface modification of a leather feeling agent are performed, so that the synthetic leather which is moist, comfortable and smooth in hand feeling can be prepared, and the service life of the synthetic leather is prolonged. And the finished leather also has good waterproofness and mechanical strength.

The invention provides a coating as well as a preparation method and application thereof. The coating is prepared from the following raw materials: a side-chain epoxy modified methyl vinyl organosilicon polymer, hydrogen-containing silicone oil, polyurethane elastic powder, a siloxane coupling agent, an inhibitor, matting powder, hydrophobic white carbon black, an organic solvent and a transition metal catalyst. The coating disclosed by the invention can form a low-temperature reaction addition type organic silicon coating, and has excellent adhesive force, wear resistance, corrosion resistance and UV aging resistance. The invention also provides a preparation method and application of the coating.

The utility model discloses a high-temperature-resistant video optical transceiver, which relates to the technical field of video optical transceivers and comprises a video optical transceiver body, a mounting frame is fixedly mounted at a connecting port of the video optical transceiver body, and a rotatable shielding cover plate is arranged at the front end of the mounting frame. The shielding cover plate comprises a plurality of middle cover plates, the middle cover plates are sequentially arranged in an attached mode, a connecting shaft is movably connected to the tops of the middle cover plates in an inserted mode, and the two ends of the connecting shaft are movably connected with the top of the mounting frame. According to the utility model, the installation frame is fixed at the external position of the connection port of the video optical transceiver body, the shielding cover plate is rotatably connected on the installation frame, and the shielding cover plate is composed of a plurality of middle cover plates and can correspond to a single connection port. Therefore, the middle cover plate at the position of the corresponding connecting port can be opened or closed according to the use requirement, the dustproof and protection effects of the shielding cover plate are better, and the use adaptability is higher.

An actuator device comprises a base unit, a sliding seat unit, a pressure relief unit and a driving unit. The base unit comprises a base body, a first end base set and a second end base set. The first end base set is provided with a vent hole, a first oil injection hole and a first oil injection nozzle. The sliding seat unit comprises a sliding table, a nut seat and a connecting hole, and the connecting hole is communicated between the sliding table and the base unit. The pressure relief unit can generate one-way air leakage from the containing space to the outside of the base unit. Oil can be supplied to the sliding seat unit through a first oil injection hole and a first oil injection nozzle of the first end seat set, traction air flow can be generated when the driving unit drives the sliding seat unit to move relative to the base unit, and the internal pressure state of the base unit can be regulated and controlled through the pressure relief unit. The purpose of preventing leakage is achieved.

The utility model discloses a card placing box with a luminous structure, which comprises an edge strip, a handle, a dustproof cover and a box body, a lamp strip is arranged on the inner wall of the box body, the dustproof cover is arranged on the upper portion of the box body, the handle is connected to the upper end of the dustproof cover, the lower portions of the two ends of the dustproof cover are connected with supporting strips, and the lower ends of the supporting strips are fixedly provided with protruding blocks. A first U-shaped strip is arranged outside the box body, a limiting block is fixed to the first U-shaped strip, a connecting rod is connected between the upper end and the lower end of the outer wall of the box body, the connecting rod is in sliding connection with the limiting block, the two ends of the first U-shaped strip are connected with fixing bases, one end of each fixing base is connected with a groove base, the groove bases are connected with the protruding blocks in a clamped mode, and supporting rods are connected to the front face and the rear face of each groove base. According to the utility model, cards can be classified conveniently, and the cards with different heights are easy to prevent dust.

The utility model discloses a multimode multicore non -contact light connector, including light connector plug and light connector socket, be provided with the connecting jack on the light connector socket, and light connector plug is inserted through the guiding structure and is set in the connecting jack of light connector socket, light connector socket and light connector plug all are provided with the optical fiber line, when light connector socket is connected with light connector head, the position of optical fiber line and optical fiber line corresponds, the end of corresponding place of optical fiber line and optical fiber line is provided with the collimating lens, and the collimating lens has the gap between collimating lens, and then reach the effect of non -contact transmission, the utility model discloses through non -contact transmission avoided the end face physical attrition and pollution of traditional connector because of repeatedly plugging, improved the service life and reliability of connector significantly, eliminated the light loss fluctuation and instability caused by end face contact badly, ensured that the light signal transmission performance is long -term stable.

The invention discloses a preparation method and application of anti-aging organosilicone acrylate resin. The preparation method comprises the following steps: firstly, carrying out esterification reaction on (polyether) oligosiloxane containing C-OH and alkenyl carboxylic acid to synthesize oligosiloxane (polyether) acrylate OSA; then carrying out multi-component free radical copolymerization on the ester, fat or alicyclic acrylate, acrylonitrile, a hydroxyl allyl monomer, alkenyl alkoxy silane and an alkenyl ultraviolet absorbent containing a 2-hydroxyl benzophenone derivative group in the structure; the structure of the organic silicon acrylate resin OSPA is simultaneously provided with an ultraviolet absorption group and oligomeric siloxane; oSPA, leather collagen powder, a coating additive and the like are compounded to prepare slurry, then the slurry is cured under the action of polyisocyanate, a leather hand feeling layer is sprayed, and then the organic silicon acrylate synthetic leather is prepared. Application shows that the prepared synthetic leather is hydrophobic in surface and good in aging resistance and mechanical performance.