RU2020100412A - SOUND INSULATING COVER WITH INTEGRATED VIBRATION INSULATION SYSTEM - Google Patents

Claims (2)

Soundproof casing with built-in vibration isolation system, made in the form of a rectangular parallelepiped, enclosing technological equipment, technological equipment is installed on at least four vibration-insulating supports, which are based on the floor of the building, while between the base of the technological equipment and a cutout in the lower edge of the rectangular parallelepiped a gap designed to exclude the transmission of vibrations from the process equipment to the soundproofing fence of the casing, and to ensure the required microclimate during the technological process, a fan is installed inside the casing, and ventilation ducts are made in the soundproofing fence to eliminate overheating of the equipment, while the inner walls of the ventilation ducts are treated with sound-absorbing material and an acoustically transparent material of the "poviden" type, while to reduce the aerodynamic noise of the ventilation system, noise mufflers installed respectively on the inlet and outlet ventilation ducts, while on the inner surface of the sound-insulating enclosure there is a sound-absorbing element in the form of smooth and perforated surfaces, between which there is a multilayer sound-absorbing structure, characterized in that each of the four vibration-insulating supports of the vibration isolation system is made in the form a vibration isolator containing a body and a piston placed in it, the body is made in the form of a cylinder with a bottom, in which a piston is located, consisting of upper and lower disks parallel to each other and coaxial to the body, rigidly connected to each other by an axisymmetric rod, and the disks are installed relative to the inner surface of the body with a gap, and between them there is a friction material selected depending on the required coefficient of friction, and a spring located between the piston and the bottom of the damper housing abuts against the lower surface of the lower disc, and the cavity between the piston and the bottom of the housing, in which the spring is located, is filled with a friction material with a higher coefficient of friction, for example, elements of the mesh structure, while the density of the elements of the mesh structure is in the optimal range of 1.2 g / cm ³ ... 2.0 g / cm ³ , moreover, the material of the wire of the elastic mesh elements is steel grade EI-708, and its diameter is in the optimal range of 0.09 mm ... 0.15 mm, while the upper surface of the upper disc of the damper piston abuts against the lower surface of the elastic element, for example, of the disc type , which provides the possibility of their mutual movement, and the force closure of the elastic element with the damper is ensured by means of a spring located in the lower part of the piston, and a locking element is provided in the damper body to fix the piston in the damper housing, made, for example, in the form of a retaining ring, fixed in the groove of the inner surface of the cylinder housing, while the locking element contacts the upper surface of the upper of the piston disc, keeping the piston in its original state, a sintered friction material based on copper containing zinc, iron, lead, graphite, vermiculite, copper, chromium, antimony and silicon is used as a friction material located between the beads of the piston with the following ratio of components , wt%: zinc 6.0 ÷ 8.0 iron 0.1 ÷ 0.2 lead 2.0 ÷ 4.0 graphite 3.0 ÷ 7.0 vermiculite 8.0 ÷ 12.0 chromium 4.0 ÷ 6.0 antimony 0.05 ÷ 0.1 silicon 2.0 ÷ 3.0 copper rest