30results about How to "Expand the use of the environment" patented technology

The invention relates to the field of preparation of functional PVC films, and discloses a scratch-resistant PVC film and a preparation method thereof. In the scratch-resistant PVC film provided by the invention, the surface of a PVC film is printed and coated with a functional coating, wherein the functional coating has the thickness of 4-6 microns, and comprises the following components in part by weight: 55-65 parts of polyurethane, 35-45 parts of polymethyl methacrylate and 5-12 parts of aziridine. The production method of the scratch-resistant PVC film provided by the invention comprises the following steps: (1) blending a coating paint; (2) preheating: preheating a PVC surface film at 50-70 DEG C; (3) printing and coating: transferring the preheated PVC surface film into a printing press for coating the coating; (4) drying and cooling: drying the film prepared in step (3) at 50-55 DEG C, cooling and rolling the film to obtain the scratch-resistant PVC film. The process of the invention is simple and easy to operate, low in cost and excellent in effect.

The invention relates to an LED (light emitting diode) tube lamp. The LED tube lamp comprises a tubular shell, an LED light source panel, a power supply circuit board, a prism plate, a reflecting cup and an installation leaf spring, wherein two sides of the shell are respectively provided with a slit in symmetry, the LED light source panel is fixed on the inner top surface of the shell, the LED light source panel is provided with a reflecting membrane, the prism plate is arranged in a top opening of the reflecting cup, the reflecting cup is fixed on the shell, the top of the reflecting cup is tightly attached to the LED light source panel, the power supply circuit board is arranged between the radial outer side of the reflecting cup and the shell and fixed below the LED light source panel in a separating manner, one end of the installation leaf spring is fixed inside the shell, and the other end stretches outside the shell through the slit. The LED tube lamp is simple in structure, small inn size, compact, attractive, strong in heat radiating property, low in height and high in space utilization rate.

The invention discloses a projector sliding door motor control method. The control method comprises the steps of collecting an environment temperature value; obtaining a motor rotary speed value according to a pre-stored temperature-rotary speed relation table, or obtaining a motor frequency value according to a pre-stored temperature-frequency relation table; and controlling a sliding door motorto drive a sliding door to be opened according to the motor rotary speed value or the motor frequency value, or controlling the sliding door motor to drive the sliding door to be closed according to the motor rotary speed value or the motor frequency value. Through the pre-stored temperature-rotary speed relation table or the pre-stored temperature-frequency relation table, the sliding door motorcan be dynamically controlled according to different temperatures, so that it is ensured that the projector electric sliding door can be opened or closed as normal at different temperatures.

The invention discloses a combined stove. The combined stove comprises a base provided with a first cavity inside, a heating device arranged in the first cavity and comprising a heating main body anda heating panel arranged at the top of the heating main body, and an induced draft fan arranged on the base in a mode of moving between a storage position and a lampblack discharge position up and down, wherein the induced draft fan comprises a bracket, an exhaust fan, a lampblack discharge pipe and a driving piece; the driving piece is arranged on the base, and is matched with the bracket to drive the bracket to move up and down; the bracket is provided with an intake port; the exhaust fan is arranged in the bracket; the lampblack discharge pipe is connected with an exhaust end of the exhaustfan; in the storage position, the intake port is not higher than the heating panel; and in the lampblack discharge position, the intake port is positioned above the heating panel. The combined stoveachieves the heating function and the lampblack discharge function, can effectively reduce indoor lampblack to prevent indoor environmental pollution, facilitates the health of users, and widens the application environment range.

A bandwidth-broadened single-fed single-layer circularly polarized micro-strip antenna based on multi-orthogonal-mode fusion relates to the technical field of unmanned aerial vehicle satellite navigation. The micro-strip antenna comprises a dielectric substrate, a probe, a metal floor and an SMA joint. The metal floor is of a horizontally-placed square plate structure. The SMA joint is axially, vertically and fixedly installed on the lower surface of the metal floor. The dielectric substrate is of a square plate structure. The dielectric substrate is placed horizontally above the metal floor.The probe is axially, vertically and fixedly installed between the dielectric substrate and the metal floor. The axial tip of the probe passes through the dielectric substrate, and the axial top of the probe is parallel to the upper surface of the dielectric substrate. The impedance bandwidth of the circularly polarized antenna is broadened, the aerodynamic effect of the antenna on unmanned aerialvehicles is reduced, and the positioning accuracy of the system is improved. The micro-strip antenna has the advantages of small size, low weight and low cost.

The invention is suitable for the technical field of agricultural machinery, and provides a winding and cleaning machine for agricultural films. The winding and cleaning machine comprises a pull type vehicle body, wherein the vehicle body is divided into a front vehicle body used for winding complete films and a rear vehicle body used for collecting broken films, the front vehicle body provides rotating power for a winding roller for winding the complete films through walking front wheels, and the rear vehicle body provides power for a front row of roller sets, a rear row of roller sets and a collecting part through walking rear wheels, the roller sets are staggered and used for turning up the broken films from soil, and the collecting part sucks up the turned broken films. According to the winding and cleaning machine for the agricultural films, rotation of the front wheels and the rear wheels during walking is adopted in the whole process to serve as power for completing agricultural film winding and power for turning up the broken agricultural films and sucking and collecting the agricultural films after turning up, the situation that the agricultural films can be used in the field without power supply is guaranteed, and the use environment range of the whole equipment is widened.

The invention provides a limiting cap for a honeycomb restraint system, and belongs to the technical field of anchor rod connectors. The limiting cap aims to solve the problem that in the process of laying a slope protection system and mounting a reinforcing device, due to the special reinforcing requirement, an existing structure cannot meet the mounting requirement. The limiting cap comprises aconical cylinder, wherein connecting anchor lugs are arranged on the periphery of the circular plane of the conical cylinder; and a through hole is formed in the middle of the conical cylinder in thevertical direction. The limiting cap is characterized in that the connecting anchor lugs are horizontally arranged relative to the circular plane of the conical cylinder; shaft connecting structures are arranged on the connecting anchor lugs and can be bent downwards, and when the anchor lugs are bent to the position perpendicular to the circular plane of the conical cylinder, clamping positioningis carried out through clamping mechanisms. Due to the bendable structures of the anchor lugs, mounting is greatly facilitated, time is saved, the fixing requirement for multiple angles and multipleaspects is met, and the use environment range of anchor rods is enlarged. Meanwhile, the fixing effect can be improved through clamping structures at the tail ends of the connecting anchor lugs, and loosening is prevented.

The invention relates to the technical field of power distribution cabinets, and discloses an explosion-proof power distribution cabinet with an independent instrument installation room, which comprises a base, the upper surface of the base is fixedly connected with a cabinet body, the outer walls of the two sides of the cabinet body are both provided with installation plates, one side of each installation plate is fixedly connected with a fixed pipe, and the fixed pipe and the installation plate are installed at an included angle of 90 degrees. A plurality of connecting blocks are fixedly connected to one side of the fixing pipe, a plurality of limiting pipes are fixedly connected to one ends of the connecting blocks, slideways are formed in the inner walls of one sides of the fixing pipe, the connecting blocks and the limiting pipes, the slideways correspond to one another, the same sealing block is movably connected between the slideways, and a plurality of limiting blocks are fixedly connected to one side of the fixing pipe. According to the invention, when short-circuit explosion occurs in the power distribution cabinet, airflow generated by the power distribution cabinet can be rapidly discharged, so that the risk of explosion of the cabinet body caused by impact of the airflow on the cabinet body is effectively avoided, the explosion loss is reduced, and the safety of people is guaranteed.