RU213534U1 - SINGLE SILENCER - Google Patents

Abstract

The utility model relates to industrial acoustics, in particular to broadband noise attenuation, and can be used in many industries where it is necessary to reduce the noise level by sound absorption under the action of local noise sources, for example, large-sized production equipment, including hydroelectric generators of hydroelectric power plants. The technical result is to increase the efficiency of sound absorption. The advantage of a piece silencer is its versatility for various industrial premises with a wide variety of noise characteristics. At the same time, it should be noted that the frame is relatively easy to assemble, and the walls made of sound-absorbing and non-combustible materials make the structure fireproof.

Description

The utility model relates to industrial acoustics, in particular to broadband noise attenuation, and can be used in industries where it is necessary to reduce the noise level under the action of local noise sources by sound absorption, for example, large-sized production equipment, including hydrogenerators of hydroelectric power plants.

A device for acoustic protection of the operator is known (RF patent No. 2643205, publ. 01/31/2018), which contains the operator’s workplace equipped with noise reduction means, including a rocker sound absorber, which consists of a rigid frame suspended by hooks on cables to the ceiling of the building with sound-absorbing material located inside the frame, wrapped with mesh nylon fabric, and expanded steel sheet is attached to the frame.

The disadvantages of the device are the implementation of the rocker sound absorber with a rigid frame, the fastening of the expanded steel sheet to the frame, and the installation of the floor on an elastic base, which makes the device not mobile.

An acoustic screen is known (RF patent No. 2579022, published on March 27, 2016), which consists of a frame with slopes made of metal sheets, to which sections of acoustic panels are attached.

The disadvantage is the use of rigid walls as noise-absorbing acoustic panels, the impossibility of screen layout.

An acoustic suspended ceiling is known (RF patent No. 2658941, publ. 06/26/2018), which consists of a rigid frame suspended from the ceiling of an industrial building with a sound-absorbing structure located inside the frame made of sound-absorbing material wrapped with acoustically transparent material.

The disadvantages are the complete overlap of the ceiling of the room, the complexity of fastening the structure due to its large area, the need to install lamps in the frame.

A noise-absorbing panel is known (RF patent No. 2362855, publ. 27.07.2009), which consists of a frame made in the form of a parallelepiped and a noise-absorbing insert.

The disadvantage of the analogue is the low efficiency of sound attenuation due to the accepted layout of the panels and the impossibility of using rigid material for sound absorption.

A piece sound absorber is known (RF patent No. 2485256, publ. 06/20/2013) taken as a prototype, which consists of a rigid frame suspended by a hook on a cable to the ceiling of an industrial building with sound-absorbing material located inside the frame.

The disadvantage is the location of the sound-absorbing material inside the frame, the fastening of the expanded steel sheet to the frame of the sound absorber.

The technical result is to increase the efficiency of sound absorption.

The technical result is achieved by the fact that the frame is made in the form of a spherical segment, the lower part of which is made in the form of a regular polygon, the roof and walls of which are made of an elastic sound-absorbing material based on melamine resin with fire-resistant impregnation, the roof is stretched over the frame from above, holes are made along its perimeter , in which wall and roof fasteners with a frame are installed, a Velcro contact tape is fixed from above with the possibility of removal, at least four holes are made at an equal distance from the center and from each other, into which covers are installed, made in the form of two semicircles and which are connected to each other with another Velcro contact tape, carabiners are installed on the outside, to which cables are attached, and holders are attached to them inside the roof, made in the form of squares larger than the holes, the walls, made in the form of horizontal blinds, consist of upper and lower cases , between which the sectors of the wall are fixed aluzi, which are made in the shape of a rectangle, and the connecting tape is attached between the walls with a Velcro contact tape, while the design of the silencer can be connected through cables with an electric winch mounted on a beam.

The utility model is illustrated by the drawings:

fig. 1 – general view of the device;

fig. 2 - view of the device with raised walls;

fig. 3 – top view of the frame;

fig. 4 - view of the frame in profile;

fig. 5 - walls with a connecting tape;

fig. 6 - a wall in a semi-assembled form, where:

1 - roof;

2 - holes in the roof;

3 - walls;

4 - connecting tape;

5 - fastening;

6 - cable;

7 - electric winch cable;

8 - carbines;

9 - electric winch;

10 - beam;

11 - frame;

12 - sector of the wall-louver;

13 - cord;

14 - upper body;

15 - lower body;

16 - Velcro contact tape;

17 - plugs.

Piece silencer consists of a rigid frame 11 (Fig. 1 - 6), made in the form of a spherical segment, which is attached to the sound-absorbing material. The frame 11 is made of a profile, such as plastic or metal. The lower part of the frame 11 is made in the form of a regular polygon.

The roof 1 (Fig. 1), made of an elastic sound-absorbing material made of melamine resin with fire-resistant impregnation, is stretched over the frame 1 from above, and holes are made along its perimeter for installing fastenings 5 of the walls 3 and the roof 1 on the frame 11, and the top is fixed with the possibility by removing the Velcro contact tape 16. At least four holes 2 in the form of a circle are made in the roofs 1 at an equal distance from each other. Covers are installed in holes 2, made of two parts in the form of a semicircle and connected to each other with a Velcro contact tape 16. Outside, carabiners 8 are installed in holes 2, to which cables 6 are fixed, and inside the roof 1 holders are fixed to carabiners 8 (in the figure not shown) made in the form of squares larger than holes 2. The design of the silencer can be connected through the cable 6 and the cable of the electric winch 7 with the electric winch 9 mounted on the beam 10.

Walls 3 (Fig. 5) are made of elastic sound-absorbing material made of melamine resin with fire-resistant impregnation in the form of horizontal blinds. The walls 3 are connected to each other by a connecting tape 4, and a Velcro contact tape 16 is fixed on the sides of the louver walls 2 and the connecting tape 3 from above. in the form of a rectangle 12. Holes are made on both sides of the wall-louver sector 12 through which a cord 13 is passed. The connecting tape 4 is made on the basis of an elastic sound-absorbing material made of melamine resin and is attached between the sound-absorbing walls 3 on a Velcro contact tape 16.

The device works as follows. A piece silencer is installed in a room where work with increased noise characteristics is carried out. The frame 11 is assembled, and then the roof 1 is attached to it and the walls 3 close the joints with Velcro contact tape 16. The walls 3 are lowered and the sectors of the shutter walls 12 are closed using the shutter mechanism. The walls 3 are connected with a connecting tape 4, and they are closed from above with a Velcro contact tape 16. To move the piece silencer, the sectors of the shutter walls 12 are opened using the shutter mechanism and the walls 3 are folded. holders are fixed on the inside of the roof, and cables 6 are fixed on the outer side of the roof. Cables 6 are fixed on the cable of the electric winch 7, which is connected to the electric winch 9. The electric winch 9 lifts the piece silencer, and then starts moving along the beam 10 to the installation site, where the device is lowered and the cables are disconnected 6 and electric winch cable 7 and close the covers.

The piece silencer with completely lowered walls provides complete sound insulation of the equipment, and the sound absorber made of non-combustible materials makes the design fireproof.

Claims (1)

Piece silencer, consisting of a rigid frame suspended on cables under the ceiling of the production room, with sound-absorbing material fixed to the frame, characterized in that the frame is made in the form of a spherical segment, the lower part of which is made in the form of a regular polygon, the roof and walls of which are made of elastic sound-absorbing material based on melamine resin with fire-resistant impregnation, the roof is stretched over the frame from above, holes are made along its perimeter, into which wall and roof fasteners with the frame are installed, a Velcro contact tape is fixed from above with the possibility of removal, at an equal distance from the center and from each other each other, at least four holes are made in which covers are installed, made in the form of two semicircles and which are connected to each other with a Velcro contact tape, carabiners are installed in them outside, to which cables are attached, and inside the roof, holders made in the form squares of greater p larger than the holes, the walls, made in the form of horizontal blinds, consist of the upper and lower housings, between which the sectors of the wall-louver are fixed, which are made in the form of a rectangle, and the connecting tape is attached between the walls with a Velcro contact tape, while the design of the silencer has the ability to connect through cables with an electric winch mounted on a beam.

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