Barrier for spindles of a textile machine

FIELD: textile and paper.

SUBSTANCE: invention relates to textile industry and concerns noise-attenuating barrier for textile machines. Barrier for spindles of a textile machine comprises a metal casing installed using brackets on a spindle bar of the machine, on the inner surface of the metal casing there is a vibration-absorbing layer, made in the form of elastic sheet vibration-absorbing material with internal loss coefficient not lower than 0.2, or composite material, or plasticate of “Agat”, “Antivibrat”, “Schwim” type. Thickness of the vibration-absorbing layer arranged on plates 2…4 times exceeds thickness of the plates. Spindles turn from a belt drive and are secured on the spindle bar of the machine by means of elastic damping gaskets from elastomer. Ratio of their total stiffness to bending stiffness of the spindle bar is within optimal range of 0.01…0.1. Metal case is located in the zone of spindles along their row and is box-shaped, and covers both rows of spindles of the machine. Plates are arranged on the casing on its inner side and on both sides, top and bottom, are coated with vibration-absorbing layers with sound-absorbing layers arranged on them. On upper and lower planes of the casing there are process holes Z1 and Z2. Ratio of total area of F1 of the process holes to the total area of casing F is within optimal range of values F1/F=0.1…0.4. Sound-absorbing element of the barrier of spindles comprises a smooth surface and a perforated surface, between which a multilayer sound-absorbing structure is arranged, made in form of rigid and perforated walls, between which two layers are arranged: sound-reflecting layer, adjacent to rigid wall, and sound-absorbing layer, adjoining perforated wall. Layer of sound reflecting material is made with complex profile, consisting of evenly distributed hollow tetrahedrons, which enable to reflect sound waves incident in all directions. Perforated wall has the following perforation parameters: hole diameter – 3÷7 mm, perforation percentage – 10÷15 %. Holes can be made as holes of circular, triangular, square, rectangular or rhomboid profile. In case of non-circular holes, it is necessary to consider as nominal diameter maximum diameter of circle inscribed in polygon. Sound-absorbing material used is mineral wool on basalt base of “Rockwool” type, or mineral wool of “URSA” type, or basalt wool of P-75 type, or glass wool lined with glass felt, or foamed polymer, for example, polyethylene or polypropylene. Surface of fibrous sound absorbers is treated with special porous air-permeable paints (for example, “Acutex T”), or coated with air-permeable fabrics or nonwoven materials, for example, “Lutrasil”.

EFFECT: invention provides higher efficiency of noise reduction.

3 cl, 2 dwg

 



 

Same patents:

FIELD: construction.

SUBSTANCE: sound-absorbing element includes perforated surfaces, between which a sound-absorbing structure is arranged and consists of three layers of sound-absorbing material. The first layer, which is a stiffer one, is solid and shaped and fixed on upper perforated surface. The second layer, which is a softer one than the first layer is discontinuous and located in focus of sound reflecting surfaces of the first layer. The discontinuous sound absorbing layer located in focus of a solid shaped layer is made in the form of rotation bodies, for example in the form of balls, and attached by means of rods parallel to upper and lower perforated surfaces, which are rigidly attached to the upper perforated surface by means of vertical fasteners perpendicular to them, for example in the form of plates, one end of which is rigidly fixed on the upper perforated surface, and the other one is made in the form of a clamp enveloping the rod and tightening it by means of a screw.

EFFECT: improving noise control efficiency and reliability of the structure as a whole.

5 cl, 1 dwg

FIELD: machine building.

SUBSTANCE: invention relates to safe working facilities. An acoustic cabin comprises a base, a frame, life support equipment, window and door apertures and enclosures in the form of acoustic panels. The base is mounted on at least three pneumatic vibration isolators made as a rubber cord shell, and a cabin frame in the form of acoustic sound absorbing panels of parallelepiped shape is rigidly attached to the base, the parallelepiped is formed by the front and back walls of the panel with sound absorbing material placed in-between. Each wall is of U-shape. Slot perforation is made on the front wall and its perforation coefficient is equal to or exceeds 0.25. The front wall is glazed by sound reflecting translucent panel made as a polygon, for example, a rectangle, formed by U-shape ribs made from vibration damping material. A panel from solid plate out of extruded polycarbonate plastic is used as the sound reflecting translucent element. The frame also consists of a ceiling with luminaries, a back wall placed in the plane parallel to the front wall plane, and four side walls with a door provided in one of them. The area of the back wall is by at least 2 times greater than the area of the front wall, and side walls adjoining the front wall are inclined to it and glazed, and those adjoining the back wall are perpendicular to it. The cabin is leakproof and is equipped by a life support system in the form of an artificially maintained environment system with a control panel, for example, a cartridge conditioner produced by General Climate. Operator's workstation is equipped by a work table and a chair with vibration isolators in the form of elastomer plates attached to the chair legs. "Vibroflex EP/25A" type or "VEP" type vibration damping plates are used as the above elastomer.

EFFECT: invention allows for increased operator's work efficiency due to decreased levels of dust and noise.

9 dwg

FIELD: machine building.

SUBSTANCE: resonant acoustic absorber comprises a rigid frame consisting of an upper active part and a lower reactive part. The reactive part is made as three coaxial and axisymmetrical resonant cylinders with their cavities being fitted by holes of different diameter serving as Helmholtz resonator necks. Supporting disks set at the cylinder ends connect the latter to each other in rigid and leaktight manner forming the reactive part of the rigid frame of the acoustic absorber. The upper active part is made in the form of a rigid perforated cylindrical shell with a perforated cover and a solid base. The cavity of the cylindrical shell is filled with sound absorbing material. At least one spiral acoustic absorbing element in the form of a cylindrical coil spring enclosing the shell is mounted around the perforated cylindrical shell. The upper and lower parts are interconnected by a resilient damping element.

EFFECT: improved efficiency of noise suppression at high frequencies.

2 cl, 1 dwg

FIELD: construction.

SUBSTANCE: invention relates to the industrial acoustics and can be used to reduce the noise of the machine drives, covering of industrial premises. Device comprises the perforated surfaces, between which the sound-absorbing multilayer structure is arranged. Layers of sound-reflecting and sound-absorbing materials of different densities are disposed between the perforated walls. Layers of sound-reflecting material are made of complex profile, consisting of uniformly distributed hollow tetrahedrons, located at the perforated walls. Layers of sound-reflecting material are made of heat-insulating material, capable to support the specified microclimate in the promise. Sound-absorbing element over the entire surface is covered with acoustically transparent material. Porous material or material in the form of the compressed crumbs made of solid vibration-damping materials is used as the sound-absorbing material.

EFFECT: increases efficiency of noise suppression and reliability of the design.

3 cl, 1 dwg, 1 tbl

FIELD: machine building.

SUBSTANCE: in sound-absorbing structure containing solid and perforated surfaces a multi-layer sound-absorbing material is located between the surfaces. The sound-absorbing element is made out of three layers: central layer out of sound reflecting material with complex profile, containing uniformly distributed hollow tetrahedrons, and symmetrically abutting to it sound-absorbing layers out of the materials with different density. As the sound-absorbing material the mats out of mineral wool "Rockwool", or "URSA", or out of basalt wool P-75 are used. The sound-absorbing element is lined with acoustically transparent material.

EFFECT: enhanced efficiency of sound absorption and reliability of the structure.

5 cl, 1 dwg

FIELD: physics, acoustics.

SUBSTANCE: invention relates to means of ensuring safe operation of operators in emergency situations, particularly at high noise levels. A system for acoustic protection of an operator, comprising an operator workstation located between acoustic shields and a suspended ceiling; in the upper area of the building, to reduce sound vibration, the operator workstation is fitted with a floor with an elastic base, wherein the operator is provided with two-stage vibration protection.

EFFECT: high efficiency of soundproofing.

2 tbl, 7 dwg

FIELD: machine building.

SUBSTANCE: sound absorber of combined type contains sound absorbers of active and reactive types located on rigid framework, framework is out of two parts, at that bottom part, i.e. reactive part, is made as rigid hollow cylinder, its bottom is connected with a support disk connecting it with a support disk on which via the resilient dampening element a top part of the framework is installed, it is made as rigid perforated cylindrical shell with perforated cover and solid base connected with the support disk, the cylindrical shell cavity is filled with sound-absorbing material, and the top and the bottom parts are connected by means of the resilient dampening element ensuring dampening of HF oscillations; at that to the perforate cover of the cylindrical shell the element is hingedly connected, using this element the framework is secured to the required object, for example, ceiling of the production room, and around the rigid perforated cylindrical shell at least one helical sound-absorbing element is installed made as cylindrical screw spring enclosing it and resting against the support disk; at that the cylinder cavity of the framework reactive part is tightly covered by the support disk with at least one hole functioning as mouth of Helmholtz resonator, that is crated together with the cylinder cavity, and around the hollow cylinder at least one helical sound-absorbing element is installed, that is made as cylindrical screw spring enclosing the hollow cylinder and resting against the support disks.

EFFECT: improved efficiency of noise suppression at high frequencies.

2 cl, 1 dwg

FIELD: transport.

SUBSTANCE: invention relates to industrial safety. Proposed cabin comprises the bed, carcass, life-supporting hardware, window and door openings and guards composed of acoustic panels. Said bed is installed at, at least, three pneumatic bumpers composed of rubber-cord shell whereto secured is cabin carcass composed by acoustic noise-absorbing panels shaped to parallelepiped composed by front and rear panel walls with noise absorber arranged there between. Every wall features U-like shape. Front wall has perforation. Front wall has glazing composed of noise-reflecting translucent polygonal panel. Said noise-reflecting translucent polygonal panel is composed by solid extruded polycarbonate plastic. Ceiling section is provided with illuminators. rear wall is located in the plane parallel with front wall plane. Side walls abutting on front wall are inclined thereto and glazed while those abutting on rear wall are perpendicular thereto. Sealed cabin is equipped with life supporting system composed by artificial microclimate system with control board. Noise absorber is composed of stiff and perforated walls with sound reflecting plies and sound absorbing materials plies arranged in two plies. Note here that sound-reflecting plies feature complex profile composed of uniformly distributed hollow tetrahedrons to allow reflection of sound waves falling in all directions which are arranged nearby stiff and perforated walls. Said plies are made of heat-insulating material to sustain preset micro climate in a room. Boards of mineral wool or glass wool with glass felt are used as noise absorbing material. Sound-translucent material is sued to line said sound absorbing material over its entire surface.

EFFECT: higher efficiency of operator's work.

8 dwg

FIELD: physics, acoustics.

SUBSTANCE: invention relates to means of protecting industrial areas from negative acoustic-noise action. The resonance noise absorber comprises interconnected panel with working holes in which removable elements are inserted, and a box. The removable elements have holes which act as orifices, the diameter of which, as well as the length of said elements, the distance between the centres of the orifices and between the back inner wall of the box and the end of the removable element are selected to ensure the required range of absorbed frequencies. Stiffening ribs can be used to increase rigidness of the device. The removable elements are installed to ensure tight contact between the elements and the panel.

EFFECT: creating conditions for more effective protection from acoustic-noise contamination of open technospheric areas while reducing the cost of each separate device.

6 cl, 7 dwg

FIELD: physics, acoustics.

SUBSTANCE: invention relates to industrial acoustics. Acoustic structure comprises shop carcass, load-bearing walls with guards composed of the floor and walls lined with sound absorbing structures, window and door frames and single sound dampers. Single sound dampers are composed of noise killers consisting of the case with flap cover and filled with sound absorbing material placed in protective shell. Case walls are composed by sound absorbing structure composed by cylindrical perforated coaxial shells, inner and outer, with sound absorber arranged there between. Sound absorber is composed of at least one shaped porous sheet. Note here that sheet cross-section profile can be triangular, rectangular, trapezoidal, circle arc or sinusoidal.

EFFECT: higher efficiency of noise killing.

7 dwg

FIELD: textiles, paper.

SUBSTANCE: balloon divider of spinning or spinning and twisting machine, characterised by the presence of concentrically arranged upper and lower elements made in the form of rings with a slot for bringing the fiber and located coaxially to the ring of the rotor. The ratio of diameter of the upper ring to the diameter of the lower ring is made as 1 to (1.15÷1.25), while the rings are mounted with an ability of vertical reciprocating movement and mounted with holder on the screws, placed in a metal housing, placed on a spindle rod. The diameter of the lower ring of the balloon divider is made larger than the diameter of the spinning ring.

EFFECT: invention enables to increase strength of the yarn, to improve the quality of its winding on the tube chuck and increase productivity of the equipment by improving the speed rate of the machine operation, to increase nonfailure operation time of twisting-winding pair of the rotor.

1 tbl, 4 dwg

FIELD: textile industry, in particular, equipment for draw frame.

SUBSTANCE: housing has sound-isolating guard made in the form of drop cover fixed on vibration-active units of draw frame. Sound-absorbing guard is positioned on head part of draw frame having comb planks. Sound-absorbing layers are fixed on inner surface of guard. Thickness of vibration-absorbing layer exceeds that of cover material by 2-4 times. Housing members are mounted on draw frame by means of vibration-isolating rubber layers having total rigidity lower than that of cover. Vibration-absorbing layer is made from elastic vibration-absorbing sheet material having intrinsic loss coefficient of at least 0.2, or composite, or plasticized rubber. Sound-absorbing material for guard consists of members made from basalt-based mineral wool, or mineral wool, or basalt wool, or glass wool lined with glass felt, or foamed polymer such as polyethylene or polypropylene. Sound-absorbing member is lined with acoustically-transparent material such as glass cloth or polymer, said material being applied onto entire surface of said member. Sound-absorbing material for guard may be based on aluminum-containing alloys which are further filled with titanium hydride or air with density ranging between 0.5 and 0.9 kg/m3, and having the following strength characteristics: compression strength ranging between 5 and 10 MPa and flexural strength ranging between 10 and 20 MPa. Sound-absorbing material for guard may be made from soft foamed porous sound-absorbing material such as polyurethane foam or polyethylene foam, or rigid porous sound-absorbing material such as foamed aluminum. Sound-absorbing material may be alternatively made in the form of crumbs of solid vibration-damping materials such as elastomer, polyurethane, or plasticized rubber, said crumbs being placed into enclosure of sound-conducting material. Crumb fractions have optimal sizes ranging between 0.3 and 2.5 mm.

EFFECT: increased efficiency in reducing of noise created during operation of draw frame.

6 cl, 1 dwg

FIELD: textile engineering.

SUBSTANCE: housing has guard formed as body and mounted on spindle bar of textile machine, at the level of spindles, along row of spindles and provided with vertical detachable cover and vibration-absorbing and sound-absorbing layers, both fixed to guard inner surface. Guard body consists of upper and side plates rigidly attached to spindle bar, and detachable cover consisting of lower horizontal plate and vertical beveled plate. Thickness of vibration-absorbing layer fixed to plates exceeds thickness of body and cover plates by 2-4 times. Vibration-absorbing layer is elastic vibration-absorbing sheet material having intrinsic loss coefficient of at least 0.2, or composite material, or plasticized rubber. Sound-absorbing material of guard has members made from basalt-based mineral wool, or mineral wool, or basalt-based wool, or glass wool lined with glass felt, or foamed polymer such as polyethylene or polypropylene. Sound-absorbing member is lined with acoustically transparent material such as glass cloth or polymer applied onto its entire surface. Sound-absorbing material for guard may be made from soft foamed porous sound-absorbing material such as polyurethane foam, or polyethylene foam, or rigid porous sound-absorbing material such as foam aluminum. Sound-absorbing material for guard may be made in the form of crumbs of solid vibration-damping materials such as elastomer, polyurethane or plasticized rubber, said crumbs being placed within enclosure of sound-conducting material. Crumb fraction has sizes ranging between 0.3 mm and 2.5 mm.

EFFECT: increased efficiency in reducing of noise created by rotating spindles.

5 cl, 1 dwg

FIELD: textile engineering.

SUBSTANCE: housing has guard formed as body and mounted on spindle bar of textile machine, at the level of spindles, along row of spindles and provided with vertical detachable cover and vibration-absorbing and sound-absorbing layers, both fixed to guard inner surface. Guard body consists of upper and side plates rigidly attached to spindle bar, and detachable cover consisting of lower horizontal plate and vertical beveled plate. Thickness of vibration-absorbing layer fixed to plates exceeds thickness of body and cover plates by 2-4 times. Vibration-absorbing layer is elastic vibration-absorbing sheet material having intrinsic loss coefficient of at least 0.2, or composite material, or plasticized rubber. Sound-absorbing material of guard has members made from basalt-based mineral wool, or mineral wool, or basalt-based wool, or glass wool lined with glass felt, or foamed polymer such as polyethylene or polypropylene. Sound-absorbing member is lined with acoustically transparent material such as glass cloth or polymer applied onto its entire surface. Sound-absorbing material for guard may be made from soft foamed porous sound-absorbing material such as polyurethane foam, or polyethylene foam, or rigid porous sound-absorbing material such as foam aluminum. Sound-absorbing material for guard may be made in the form of crumbs of solid vibration-damping materials such as elastomer, polyurethane or plasticized rubber, said crumbs being placed within enclosure of sound-conducting material. Crumb fraction has sizes ranging between 0.3 mm and 2.5 mm.

EFFECT: increased efficiency in reducing of noise created by rotating spindles.

5 cl, 1 dwg

FIELD: textile engineering.

SUBSTANCE: housing has guard mounted on spindle bar of textile machine, at the level of spindles, along row of spindles and provided with vertical detachable cover and vibration-absorbing layer fixed to guard inner surface and sound-absorbing layer. Guard consists of upper part and lower part, each of said parts having body made from sheet angular members with apex angle of 90 deg. Sheet members are rigidly attached to spindle bar upper and lower parts. Thickness of vibration-absorbing layer fixed to plates exceeds thickness of body plates and cover by 2-4 times. Housing parts are fixed on textile machine by means of rubber layers having total rigidity lower than that of vibration-isolating spindle hanger. Vibration-absorbing material is elastic vibration-absorbing sheet material having intrinsic loss coefficient of at least 0.2, or composite material, or plasticized rubber. Sound-absorbing material of guard has members made from basalt-based mineral wool, or mineral wool, or basalt-based wool, or glass wool lined with glass felt, or foamed polymer such as polyethylene or polypropylene. Sound-absorbing member is lined with acoustically transparent material such as glass cloth or polymer applied onto its entire surface. Sound-absorbing material for guard may be made from soft foamed porous sound-absorbing material such as polyurethane foam, or polyethylene foam, or rigid porous sound-absorbing material such as foam aluminum. Sound-absorbing material for guard may be made in the form of crumbs of solid vibration-damping materials such as elastomer, polyurethane or plasticized rubber, said crumbs being placed within enclosure of sound-conducting material. Crumb fraction has sizes ranging between 0.3 mm and 2.5 mm.

EFFECT: increased efficiency in reducing of noise created by rotating spindles.

5 cl, 1 dwg

FIELD: textile engineering.

SUBSTANCE: housing has guard mounted on spindle bar of textile machine, at the level of spindles, along row of spindles and provided with vertical detachable cover and vibration-absorbing layer fixed to guard inner surface and sound-absorbing layer. Guard consists of upper part and lower part, each of said parts having body made from sheet angular members with apex angle of 90 deg. Sheet members are rigidly attached to spindle bar upper and lower parts. Thickness of vibration-absorbing layer fixed to plates exceeds thickness of body plates and cover by 2-4 times. Housing parts are fixed on textile machine by means of rubber layers having total rigidity lower than that of vibration-isolating spindle hanger. Vibration-absorbing material is elastic vibration-absorbing sheet material having intrinsic loss coefficient of at least 0.2, or composite material, or plasticized rubber. Sound-absorbing material of guard has members made from basalt-based mineral wool, or mineral wool, or basalt-based wool, or glass wool lined with glass felt, or foamed polymer such as polyethylene or polypropylene. Sound-absorbing member is lined with acoustically transparent material such as glass cloth or polymer applied onto its entire surface. Sound-absorbing material for guard may be made from soft foamed porous sound-absorbing material such as polyurethane foam, or polyethylene foam, or rigid porous sound-absorbing material such as foam aluminum. Sound-absorbing material for guard may be made in the form of crumbs of solid vibration-damping materials such as elastomer, polyurethane or plasticized rubber, said crumbs being placed within enclosure of sound-conducting material. Crumb fraction has sizes ranging between 0.3 mm and 2.5 mm.

EFFECT: increased efficiency in reducing of noise created by rotating spindles.

5 cl, 1 dwg

FIELD: equipment for textile machines.

SUBSTANCE: guard has housing positioned on spindle bar of textile machine, at the level and row of spindles, and equipped with vibration and sound-absorbing layers provided on housing inner surface, and planks fixed in cantilevered position along row of spindles on housing outer surface. Vibration-absorbing layer is provided on lower surface of planks. Housing encloses both sides of machine so as to form rectangular box with heat withdrawal process openings formed in upper and lower plates of rectangular box. Spindles are fixed on spindle bar by means of flexible elastomer layers, with ratio of total rigidity of flexible layers to flexural rigidity of spindle bar constituting 0.01-0.1. Ratio of total area F1 of process openings to total housing area F is F1/F=0.1-0.4, and thickness of vibration-absorbing layer fixed on planks exceeds thickness of planks by 2-4 times. Material of vibration-absorbing layer is elastic vibration-absorbing sheet material having internal loss coefficient of at least 0.2, or composite material. Sound-absorbing material for housing consists of members made from basalt-based mineral wool. Sound-absorbing member is lined over its entire surface with acoustically permeable material such as fiber glass. Sound-absorbing material for housing may be made from material based on aluminum-bearing alloys, followed by filling said material with titanium hydride or air to density of 0.5-0.9 kg/m3 and having following strength characteristics: compression strength 5-10 MPa, flexural strength 10-20 MPa. Sound-absorbing material for housing may be made from foamed porous sound-absorbing material such as foamed polyurethane, or polyethylene, or from rigid porous sound-absorbing material such as foamed aluminum, or said material may be made in the form of dust of vibration suppressing materials such as elastomer, polyurethane, or plastic compound placed into enclosure of acoustically permeable material, with sizes of dust particles ranging between 0.3 mm and 2.5 mm.

EFFECT: increased efficiency in minimizing sound created during operation of textile machine.

6 cl, 2 dwg

FIELD: equipment for textile machines.

SUBSTANCE: guard has housing positioned on spindle bar of textile machine, at the level and row of spindles, and equipped with vibration and sound-absorbing layers provided on housing inner surface, and planks fixed in cantilevered position along row of spindles on housing outer surface. Vibration-absorbing layer is provided on lower surface of planks. Housing encloses both sides of machine so as to form rectangular box with heat withdrawal process openings formed in upper and lower plates of rectangular box. Spindles are fixed on spindle bar by means of flexible elastomer layers, with ratio of total rigidity of flexible layers to flexural rigidity of spindle bar constituting 0.01-0.1. Ratio of total area F1 of process openings to total housing area F is F1/F=0.1-0.4, and thickness of vibration-absorbing layer fixed on planks exceeds thickness of planks by 2-4 times. Material of vibration-absorbing layer is elastic vibration-absorbing sheet material having internal loss coefficient of at least 0.2, or composite material. Sound-absorbing material for housing consists of members made from basalt-based mineral wool. Sound-absorbing member is lined over its entire surface with acoustically permeable material such as fiber glass. Sound-absorbing material for housing may be made from material based on aluminum-bearing alloys, followed by filling said material with titanium hydride or air to density of 0.5-0.9 kg/m3 and having following strength characteristics: compression strength 5-10 MPa, flexural strength 10-20 MPa. Sound-absorbing material for housing may be made from foamed porous sound-absorbing material such as foamed polyurethane, or polyethylene, or from rigid porous sound-absorbing material such as foamed aluminum, or said material may be made in the form of dust of vibration suppressing materials such as elastomer, polyurethane, or plastic compound placed into enclosure of acoustically permeable material, with sizes of dust particles ranging between 0.3 mm and 2.5 mm.

EFFECT: increased efficiency in minimizing sound created during operation of textile machine.

6 cl, 2 dwg

FIELD: textile and chemical industry, in particular, noise-absorbing guard for textile machines.

SUBSTANCE: unit for producing of high-strength viscose cord has mechanism for blocked lifting of encapsulation shield and forced drawing ventilation valve, air duct for forced drawing ventilation equipped with valve, air duct for removal of air-vapor mixture from first plasticizing bath pipes, encapsulation shield positioned at side where thread is formed, transverse and longitudinal partitions, thread forming set of equipment, air duct of permanently functioning drawing ventilation system and encapsulating shield positioned at side where drawing, collecting and transportation of thread are performed. Each of encapsulation shields has carcass formed as parallelepiped defined by front and rear walls of panel, each made U-shaped. There is slit-type perforation on front wall, with perforation coefficient being accepted equal to or exceeding 0.25. Panel walls are fixed with respect to one another by means of vibration damping covers. Noise-absorbing material of noise-damping members is made in the form of plate made from basalt-base mineral wool, or mineral wool, or basal wool, or glass wool with glass wool facing, or foamed polymer such as polyethylene or polypropylene. Noise-absorbing member is faced over its entire surface with acoustically transmitting material.

EFFECT: increased efficiency in reducing of noise level and increased efficiency of unit.

8 cl, 3 dwg

FIELD: textile and chemical industry, in particular, noise absorbing guards for spinning machines.

SUBSTANCE: spinning machine for staple viscose textile fiber comprises two single-sided spinning machines with sections at each side, and has set of fiber forming equipment, encapsulating shield, mechanism for blocked lifting of shield and enhanced suction valve, enhanced suction air tube, valve with hydraulic gate, and permanent suction air duct. Internal vibration isolation system for spinning machine has flexible members made from solid elastomer or wood. Vibration isolation system for frame of machine has flexible members extending along edge of machine to join said frame with foundation block. Rigidity of internal isolation flexible members of machine exceeds by 3-5 times the rigidity of flexible members joining machine frame to foundation block.

EFFECT: increased efficiency in reducing of noise volume and increased capacity of spinning machine.

4 cl, 3 dwg

FIELD: textile industry, in particular, equipment for wet spinning machines.

SUBSTANCE: feeding frame for textile machine has binders mounted on columns and equipped with hangers and brackets, spool holders placed on hangers, and guiding rollers. Each of spool holders has rotary stop disposed at its lower end and adapted for holding spools in operating position and allowing spools to be removed and installed in zone at the level of operator's eyes without detachment of spool holders from frame hangers. Aperture of each hanger has size slightly greater than diameter of spool holder hook rod. Each hanger has rib allowing spool holder to be removed from hanger only upon turning thereof through angle of about 60° to hanger axis for preventing spontaneous falling of spool holder from hanger. Guiding rollers have flange made in the form of continuous conical disk arranged at its one side and flange made in the form of four fingers arranged at its other side. Such construction imparts strength to rollers and allows rollers to be readily cleaned from filaments adhered thereto. Frame units are mounted on two columns transverse thereto. Attachments for all frame units are made adjustable to provide for mounting of spools of different sizes.

EFFECT: convenient usage, reduced labor intensity for operator, complicated manufacturing and maintenance.

4 cl, 6 dwg

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