CN206111630U - Mining auxiliary ventilating fan of ultra -low noise - Google Patents

Abstract

The utility model provides a mining auxiliary ventilating fan of ultra -low noise, personally experiences sth. Part of the body, imports the muffler including export muffler, host computer, and the host computer body is including motor, impeller, inner shell, shell, the import muffler includes collector, amortization wall, a silencer section of thick bamboo, side direction air inlet mouth and advances air flap that beneficial effect is: be connected fixedly between inner shell and the shell through elastic material, reduced the radiated noise of host computer shell by a wide margin, the import muffler passes through cross sectional area and changes, with the aid of pipeline section expansion suddenly or shrink, reaches the purpose of once eliminating the noise, when the sound wave got into the noise elimination wall, partly acoustic energy rubbed in porous material's space and changes heat energy into and dissipate to reach secondary noise elimination mesh, the amortization wall can be very convenient after by dust blocked take out and wash or change, keep noise cancelling effect, repair time is short, the partial sound wave of sound source department is partly by the noise elimination material absorption to the side air inlet orifice plate after to reach cubic noise elimination mesh.

Description

A kind of ultra-low noise quo of local Fan for Mine

Technical field

The utility model is related to a kind of mine ventilation equipment, and in particular to a kind of ultra-low noise quo of local Fan for Mine.

Background technology

Mine ventilation system is an important component part of pit mining, is the basic guarantee of mine safety production, ore deposit With to revolving booster（Hereinafter referred to as local fan）Effect be in Mine Production, continually by fresh air Mining face under mine is transported to, staff breathes and dilute and exclude the various poisonous, pernicious gases in down-hole and mine dust, creates good Working environment, ensure underground operators it is healthy and safe.

The local fan that domestic production at present is used mainly has the series such as FBD, FB, FBDC, FBY, the motor of these blower fans Two grades of explosion separation motors are adopted, motor speed is high, and aerodynamic noise is big；Most types are equipped with importing and exporting silencer, but effect of eliminating the noise Fruit is general, it is impossible to meet user's requirement.

The content of the invention

The purpose of this utility model is exactly to further reduce the noise of blower fan, there is provided a kind of ultra-low noise mining partial Ventilation blower.

For achieving the above object, the technical solution adopted in the utility model is：

A kind of ultra-low noise quo of local Fan for Mine, including exit silencer, main body, suction muffler, its feature exists In：Main body includes motor, impeller, inner casing, shell, and the inner casing includes front inner casing, rear inner casing, and the shell includes upper Housing, lower house, there is impeller in front inner casing, there is motor in rear inner casing, there is flange, front inner casing and rear inner casing on motor Respectively by flange and motor connection, there is anti-rotation sheet on inner casing, be fixed on by several rubber bars between inner casing and shell Together；There are two rubber slabs on lower house, rubber slab contacts prevention inner casing with anti-rotation sheet and rotates；In upper shell, lower house There is rubber blanket on the flange inner face at two ends, rubber blanket limits inner casing axially-movable；Upper shell, lower house are bolted, knot The patch sealing gasket sealing of conjunction face.

Ultra-low noise quo of local Fan for Mine in accordance with the above, it is characterised in that：Described suction muffler includes Current collector, noise reduction wall, silencer cylinder, side air admission mouth and air intake velar plate, described current collector is by first flange, fair water cone Support, fair water cone and current collector cylinder are welded；Described silencer cylinder is by second flange, connecting plate and the 3rd flange welding Into；Current collector and silencer cylinder are connected by way of welding, and, built with the noise reduction wall that can be extracted out, noise reduction is within the walls for silencer cylinder There is quieter material, the described quieter material eliminated the noise within the walls is that glass wool cloth wraps up glass silk flosssilk wadding, and noise elimination wall is fixed by perforated plate Welding fabrication；Described side air admission mouth is to enter air duct, side air intake orifice plate, guide shell and side air intake by the 4th flange, side to support It is welded；Described side air intake orifice plate is punch forming part, and its middle part is plane, and periphery is sphere, is had on the air intake orifice plate of side Several apertures；Quieter material is filled with cavity between side air intake orifice plate and air intake velar plate, deadener is glass fiber Cloth wraps up glass silk flosssilk wadding；Described side air admission mouth is connected on silencer cylinder by second flange；Described noise elimination wall To be connected on silencer cylinder by the 3rd flange, pull down noise reduction wall it is i.e. capable of washing or change quieter material.

Ultra-low noise quo of local Fan for Mine in accordance with the above, it is characterised in that：Described noise reduction noise reduction within the walls Material is fixed for foaming deadener by steel plate lead frame；In cavity between described side air intake orifice plate and air intake velar plate The deadener of filling is foaming deadener.In addition, above-described quieter material can also be other noise reductions such as silencing cotton Material.

Ultra-low noise quo of local Fan for Mine in accordance with the above, it is characterised in that：Described air intake velar plate is to use Screw is fixed on the 4th flange, pulls down cleaning or the interior quieter material filled of replacing cavity by air intake velar plate.

The utility model beneficial effect compared with prior art is：Noise main source and master during existing blower fan work The radiated noise and import noise of machine shell, is connected, significantly between the utility model inner casing and shell by elastomeric material Degree reduces the radiated noise of host housing；Suction muffler is changed by area of section, is expanded suddenly by means of pipeline section Or shrink, the sound wave for making some frequencies along pipe transmmision is reflected back to Sounnd source direction at mutation, once disappeared so as to reach The purpose of sound；There is the noise reduction wall that can be extracted out in import silencer, when sound wave enters noise elimination wall, a part of acoustic energy is in porous material Space in friction and change into thermal energy consumption and dissipate, so as to reach secondary noise elimination purpose；Noise reduction wall can be very after being blocked by dust It is convenient to extract cleaning out or change, erasure effect is kept, the repair time is short；Acoustic wave segment at sound source is reached on side air admission mouth Side air intake orifice plate after, a part is reflected back toward Sounnd source direction, and another part is absorbed by deadener, so as to reach three noise eliminations Purpose.

Description of the drawings

Fig. 1 is equipped with the schematic diagram of the ultra-low noise quo of local Fan for Mine of two-stage main body machine 2；

Fig. 2 is the structural representation of the utility model embodiment ultra-low noise quo of local Fan for Mine main body machine 2；

Fig. 3 is Fig. 2 motors 13, impeller 11, the structural representation of inner casing 5；

Fig. 4 is the structural representation of the utility model embodiment suction muffler 3；

Fig. 5 is the structural representation that each parts of Fig. 4 link together；

Icon explanation：1. exit silencer；2. main body；3. suction muffler；4. shell；5. inner casing；6. go up Housing；7. lower house；8. rubber slab；9. rubber bar；10. rubber blanket；11. impellers；Inner casing before 12.；13. motors； Inner casing after 14.；15. anti-rotation sheets.31. current collectors；32. noise reduction walls；33. silencers；34. side air admission mouths；35. Air intake velar plate；36. first flanges；37. fair water cones are supported；38. fair water cones；39. current collector cylinders；40. connecting plates；41. 3rd flange；43. second flanges；44. the 4th flanges；Air duct is entered in 45. sides；46. cavitys；47. side air intake orifice plates；48. Guide shell；49. side air intakes are supported.

Specific embodiment

Fig. 1 is equipped with the schematic diagram of the ultra-low noise quo of local Fan for Mine of two-stage main body machine 2；Fig. 2 is the utility model The structural representation of embodiment ultra-low noise quo of local Fan for Mine main body machine 2；Fig. 3 is Fig. 2 motors 13, impeller 11, inner casing 5 Structural representation；The utility model ultra-low noise quo of local Fan for Mine, including exit silencer 1, main body 2, import noise reduction Device 3, it is characterised in that：Main body 2 include motor 13, impeller 11, inner casing 5, shell 4, the inner casing 5 include front inner casing 12, Inner casing 14 afterwards, the shell 4 includes having in upper shell 6, lower house 7, front inner casing 12 in impeller 11, rear inner casing 14 electricity Machine 13, there is flange on motor 13, front inner casing 12 and rear inner casing 14 are connected respectively by flange with motor 13, front inner casing 12 It is connected with flange between rear inner casing 14；There is anti-rotation sheet 15 on inner casing 14, several rubbers are passed through between inner casing 5 and shell 4 Glue stick 9 is fixed together；There are two rubber slabs 8 on lower house 7, rubber slab 8 contacts 14 turns of inner casing of prevention with anti-rotation sheet 15 It is dynamic；There is rubber blanket 10 on the flange inner face at upper shell 6, the two ends of lower house 7, rubber blanket 10 limits the axially-movable of inner casing 5；Upper casing Body 6, lower house 7 are bolted, faying face patch PE sealing gasket sealings；Fig. 4 is the utility model embodiment suction muffler 3 Structural representation；Fig. 5 is the structural representation that each parts of Fig. 4 link together；Described suction muffler 3 includes current collector 31st, noise reduction wall 32, silencer cylinder 33, side air admission mouth 34 and air intake velar plate 35, described current collector 31 by first flange 36, Fair water cone supports 37, fair water cone 38 and current collector cylinder 39 to be welded；Described silencer cylinder 33 is by second flange 43, connecting plate 40 and the 3rd flange 41 be welded；Current collector 31 and silencer cylinder 33 are connected by way of welding, in silencer cylinder 33 Equipped with the noise reduction wall 32 that can be extracted out, there is quieter material in noise reduction wall 32, the quieter material in described noise elimination wall 32 is glass fiber Cloth wraps up glass silk flosssilk wadding, and noise elimination wall 32 fixes welding fabrication by perforated plate；Described side air admission mouth 34 be by the 4th flange 44, Side enters air duct 45, side air intake orifice plate 47, guide shell 48 and side air intake and supports 49 to be welded；Described side air intake orifice plate 47 is punching Molded part, its middle part is plane, and periphery is sphere, has several apertures on side air intake orifice plate 47；Side air intake orifice plate 47 with enter Quieter material is filled with cavity 46 between air port cover plate 35, deadener is that glass wool cloth wraps up glass silk flosssilk wadding；Described Side air admission mouth 34 is connected on silencer cylinder 33 by second flange 43；Described noise elimination wall 32 is by the 3rd flange 41 are connected on silencer cylinder 33, pull down noise reduction wall 32 it is i.e. capable of washing or change quieter material.

Ultra-low noise quo of local Fan for Mine in accordance with the above, it is characterised in that：Disappearing in described noise reduction wall 32 Sound material is fixed for foaming deadener by steel plate lead frame；Between described side air intake orifice plate 47 and air intake velar plate 35 The deadener of filling is foaming deadener in cavity 46.In addition, above-described quieter material can also be silencing cotton etc. Other quieter materials.

Ultra-low noise quo of local Fan for Mine in accordance with the above, it is characterised in that：Described air intake velar plate 35 is It is screwed on the 4th flange 44, pulls down noise reduction capable of washing or changing filling in cavity 46 by air intake velar plate 35 Material.

During blower fan work, the noise that impeller is produced is most of because of the stop of inner casing 5, propagates along air channel, partial noise By inner casing 5 to external radiation, because inside and outside casing is not rigidly connected, overhead speaker effect will not be formed, the noise for radiating Consumption is further reflected by outer cage, therefore, appearing the noise of outer cage can significantly reduce, and considerably reduce fan noise.

The utility model pipeline section area at fair water cone 38, current collector cylinder 39, guide shell 48 diminishes, other position pipes Road area of section is big, expands suddenly or shrinks by means of pipeline section, and the sound wave for making some frequencies along pipe transmmision is being mutated Place to Sounnd source direction is reflected back, so as to reach the purpose once eliminated the noise；There is the noise reduction wall 32 that can be extracted out in import silencer 3, When sound wave enters noise elimination wall, a part of acoustic energy rubs in the space of porous material and changes into thermal energy consumption and dissipate, so as to reach To secondary noise elimination purpose；Noise reduction wall 32 can very easily extract cleaning out or change after being blocked by dust, keep erasure effect, inspection Repair the time short；Acoustic wave segment at sound source is reached after the side air intake orifice plate 47 on side air admission mouth 34, and a part is reflected back toward sound Source direction, another part is absorbed by deadener, so as to reach three noise elimination purposes.

The present embodiment illustrates two-stage main body 2, and the utility model ultra-low noise quo of local Fan for Mine can also be dress There is the blower fan of single-stage main body or two-stage above quantity main body.

Claims (4)

1. a kind of ultra-low noise quo of local Fan for Mine, including exit silencer, main body, suction muffler, it is characterised in that： Main body includes motor, impeller, inner casing, shell, and the inner casing includes front inner casing, rear inner casing, and the shell includes upper casing Body, lower house, there is impeller in front inner casing, there is motor in rear inner casing, there is flange, front inner casing and rear inner casing point on motor Not Tong Guo flange and motor connection, have anti-rotation sheet on inner casing, be fixed on one by several rubber bars between inner casing and shell Rise；There are two rubber slabs on lower house, rubber slab contacts prevention inner casing with anti-rotation sheet and rotates；In upper shell, lower house two There is rubber blanket on the flange inner face at end, rubber blanket limits inner casing axially-movable；Upper shell, lower house are bolted, with reference to Face patch sealing gasket sealing.

2. ultra-low noise quo of local Fan for Mine according to claim 1, it is characterised in that：Described suction muffler bag Current collector, noise reduction wall, silencer cylinder, side air admission mouth and air intake velar plate are included, described current collector is by first flange, fair water cone Support, fair water cone and current collector cylinder are welded；Described silencer cylinder is by second flange, connecting plate and the 3rd flange welding Into；Current collector and silencer cylinder are connected by way of welding, and, built with the noise reduction wall that can be extracted out, noise reduction is within the walls for silencer cylinder There is quieter material, the described quieter material eliminated the noise within the walls is that glass wool cloth wraps up glass silk flosssilk wadding, and noise elimination wall is fixed by perforated plate Welding fabrication；Described side air admission mouth is to enter air duct, side air intake orifice plate, guide shell and side air intake by the 4th flange, side to support It is welded；Described side air intake orifice plate is punch forming part, and its middle part is plane, and periphery is sphere, is had on the air intake orifice plate of side Several apertures；Quieter material is filled with cavity between side air intake orifice plate and air intake velar plate, deadener is glass fiber Cloth wraps up glass silk flosssilk wadding；Described side air admission mouth is connected on silencer cylinder by second flange；Described noise elimination wall To be connected on silencer cylinder by the 3rd flange, pull down noise reduction wall it is i.e. capable of washing or change quieter material.

3. ultra-low noise quo of local Fan for Mine according to claim 2, it is characterised in that：Described noise reduction disappearing within the walls Sound material is fixed for foaming deadener by steel plate lead frame；Cavity between described side air intake orifice plate and air intake velar plate The deadener of interior filling is foaming deadener.

4. the ultra-low noise quo of local Fan for Mine according to Claims 2 or 3, it is characterised in that：Described air intake lid Plate is screwed on the 4th flange, pulls down cleaning or the interior noise reduction material filled of replacing cavity by air intake velar plate Material.