6results about How to "Does not affect strength" patented technology

This invention provides a system for monitoring and removing scale from the inner wall of HVAC water pipes, belonging to the technical field of HVAC systems. It includes HVAC water pipes, with an auxiliary removal component installed on the outer wall of the pipes to use ultrasonic vibrations to peel scale off the inner wall. In use, the auxiliary removal component allows the ultrasonic transducer to receive a high-frequency electrical signal from an ultrasonic generator, generating high-frequency mechanical vibrations. These vibrations propagate rapidly along the wall of the HVAC water pipe and are transmitted to the water inside and the scale adhering to the inner wall. Under the action of the high-frequency ultrasonic vibrations, the scale gradually peels off the inner wall, achieving the purpose of scale removal without causing significant mechanical impact or damage to the HVAC water pipe itself. Long-term use will not affect the strength and sealing of the HVAC water pipes, ensuring their safe and stable operation.

This utility model discloses a spiral-grooved vibration-damping tapered shank cutting tool, relating to the technical field of BT-type tapered shank cutting tools. Specifically, it is a spiral-grooved vibration-damping tapered shank cutting tool, comprising a flange and a BT-type tapered shank. The surface of the BT-type tapered shank is provided with spiral grooves, which are filled with elastic damping material. This spiral-grooved vibration-damping tapered shank cutting tool, by designing spiral grooves in the BT-type tapered shank and filling them with elastic damping material, utilizes the multi-head spiral structure of the spiral grooves to disperse vibration energy in multiple directions. At the same time, the elastic damping material absorbs high-frequency vibrations through shear deformation. This "rigid-flexible composite" structural design solves the contradiction between vibration suppression and structural strength in BT-type tapered shank cutting tools, and also provides high structural reliability without affecting the original strength of the BT-type tapered shank. It offers a BT-type tapered shank cutting tool that combines high rigidity, good vibration reduction performance, and low manufacturing cost.

The utility model belongs to the cabinet body protection material technical field, the utility model discloses a cabinet body PVC waterproof and moistureproof board, including board main part, the board main part is the hollow board of integrated molding, and the length direction of hollow hole of board main part is penetrated through board main part, the outside of board main part is covered with aluminium foil, and is provided with waterproof coating between board main part and aluminium foil. Through setting waterproof coating and aluminium foil, make waterproof and moistureproof board have good waterproof and moistureproof effect, can effectively prevent the penetration of water and water vapor, protect the cabinet body from the corrosion of water and water vapor, even acid and alkali environment, thereby improve the waterproof and moistureproof effect and corrosion resistance of cabinet body, thereby improve the use effect and service life of waterproof and moistureproof board.

The application relates to the technical field of building plugging materials, and particularly provides a long-operable-time plugging material, which is prepared from the following raw materials in terms of total weight: 0.02-3% of a retarder, 0.005-2% of a calcium salt, 0.001-1% of a cellulose ether and cement supplementing to 100%. By optimizing the types of the retarder, the calcium salt and the cellulose ether and by stipulating the relative amounts of the retarder, the calcium salt and the cellulose ether, the quick-setting type plugging material has a relatively long retarding time, and the anti-bending performance, the anti-permeation performance, the bonding performance, the heat resistance and the freeze-thaw cycle resistance of the material after solidification are effectively improved.

The utility model discloses a kind of temperature and humidity detectors for seedling house, including detector body, the bracket is connected in the bottom of detector body, clamping plate is vertically arranged in the rear side of bracket lower part, clamping plate side is fixedly connected with bracket, shaft rod is transversely arranged in the front side of bracket lower part, one end of shaft rod is fixedly connected with bracket, shaft rod is oppositely arranged with clamping plate, extruding piece is rotatably connected in shaft rod, extruding piece is cylinder, extruding piece end surface is equipped with the shaft through-hole adapted with shaft rod, the cooperation of extruding piece and shaft rod is realized with the rotatable connection of shaft rod by shaft through-hole, shaft through-hole deviates the central axis of extruding piece and is close to the circumferential surface of extruding piece, the circumferential surface of extruding piece is fixedly connected with operating rod, and the central axis of operating rod is perpendicular to extruding piece. By the cooperation of extruding piece and clamping plate, frame body is clamped, so as to realize the purpose that detector body can be installed without punching.