3results about How to "Dustproof" patented technology

The utility model discloses a cooling water system convenient to move, disassemble and assemble, which comprises a water tank, a cooling tower, an integrated pump set, a control cabinet and a container, the integrated pump set and the control cabinet are arranged in the container, and a container door is arranged on the container; water inlet connectors and water outlet connectors of the integrated pump set, the water tank and the cooling tower are quick-assembly flanges, and the integrated pump set, the water tank and the cooling tower are connected through the quick-assembly flanges and external pipelines. The control cabinet is electrically connected with the integrated pump set and the cooling tower. The modularized structural design is adopted, the integrated pump set and the control cabinet are arranged in the container, the integrated pump set and the control cabinet do not need to be independently installed and debugged, during installation, the integrated pump set is connected with the cooling tower and the water tank through an external pipeline, and the integrated pump set is electrically connected with the cooling tower through the control cabinet; reliability and stability of equipment are guaranteed, earlier-stage investment cost of customers is reduced, later-stage extension requirements are met, the installation period is short, and disassembly and migration are flexible and simple.

This application discloses a waterproof multifunctional microphone, including a circuit board. The circuit board houses a microphone sensor, a pressure sensor, a first housing, and a second housing. The first housing and the circuit board form a first cavity to house the pressure sensor, and the second housing and the circuit board form a second cavity to house the first housing and the microphone sensor. The circuit board has a sound inlet corresponding to the microphone sensor, and a waterproof and breathable membrane is provided at the sound inlet. The first housing has a vent hole connecting the second cavity and the first cavity. This application achieves integrated packaging of the microphone sensor and the pressure sensor, reducing the packaging size and effectively avoiding interference between the microphone sensor and the pressure sensor during operation. Furthermore, it also features waterproof, dustproof, and corrosion-resistant properties.

The application belongs to the technical field of special coating materials, and particularly relates to a functional finish for maintaining the aerodynamic shape of a ceramicized heat-resistant coating and a preparation method thereof. The functional finish comprises component A and component B. The component A comprises 75-80% of a base and 20-25% of a pigment based on the total weight of the component A. The base comprises 50-60 parts of organic silicon resin, 5-10 parts of a reinforcing agent and 3-5 parts of a matting agent. The component B comprises a cross-linking agent and a catalyst in a mass ratio of 10:1. The functional finish has the characteristics of easily forming uniform micro-cracks in a high-temperature flight environment. The finish cracks extend to the surface of the heat-resistant coating, so that the surface of the heat-resistant coating forms uniform micro-cracks. Therefore, the gas generated by pyrolysis in the coating can be released through the cracks, and the phenomenon that the ceramicized ablation surface layer is separated from the original layer due to poor emission of pyrolysis gas is avoided.