CN2660193Y

CN2660193Y - Local fan silencer

Info

Publication number: CN2660193Y
Application number: CN 200320111679
Authority: CN
Inventors: 滕坚毅; 崔兆侠; 吴刚
Original assignee: 滕坚毅
Priority date: 2003-12-05
Filing date: 2003-12-05
Publication date: 2004-12-01
Anticipated expiration: 2013-12-05

Abstract

A novel muffler used for reducing noises generated by mine local fans consists of an air inlet barrel and an air outlet barrel arranged on both sides of the fan; a hot-rolled steel plate is rolled on a rolling plate into a cylindrical external barrel and a galvanized screening plate penetrating through a round hole is respectively rolled into a cylindrical expansion layer and a conical core cylinder. The sound absorption material is a silicic acid aluminum quilt wound by glass fiber cloth and tightened by thin wires outside, which is respectively filled in the circular space consisting of the external barrel and the expansion layer and the conical space of the core cylinder. The inlet side of the inlet barrel is provided with a protective shield and the outlet side of the outlet barrel with an end cylinder connected with the barrel; the inlet barrel and the outlet barrel are respectively arranged on both sides of an axial fan. The wind enters into the muffler space of air inlet barrel and outlet barrel through the protective shield and then is sent to the working face by tightening the barrel on the end cylinder, thus guaranteeing the ventilation and achieving the aim of eliminating noises. The utility model is an ideal mine muffler with novel structure, reasonable process, high strengthen and long service life.

Description

Novel portable blower silencing apparatus

Affiliated technical field

The utility model relate to eliminate the down-hole, mine with secondary fan noise generated leave standstill device.

Background technique

At present, the down-hole, mine mostly is screen cloth type structure with the portable blower silencing apparatus, form by the air intake tube and the wind outlet barrel that are installed in the portable blower left and right sides respectively, urceolus adopts sheet metal to roll, expanding surface layer and core tube adopts Round Steel Bar to make inside and outside concentric steelframe, the right cotton of sound-absorbing material is fixed on the concentric steelframe with fine screen mesh and glass tape, is weldingly connected with Round Steel Bar between the steelframe, and then steelframe is hung on the urceolus with hook.Screen cloth type silencing apparatus is not only simple in structure, shape is thin, intensity is low, cracky, life cycle short, and sound-absorbing material is of poor quality, the noise elimination effect is undesirable, also owing to lack protective housing, exist the potential safety hazard that the air intake tube easily advances foreign matter, have a strong impact on thereby miner's physical and mental health and personal safety caused.

Summary of the invention

Short in order to overcome existing screen cloth type silencing apparatus life cycle, the unfavorable deficiency of noise elimination effect, the utility model provides a kind of novel portable blower silencing apparatus, employing be sieve plate type structure.It not only structure be tending towards rationally, the intensity height, life cycle is long, and the noise elimination effect is remarkable, airflow pressure loss is little, and the physical and mental health and the personal safety in ore deposit had protective action.

The technological scheme that its technical problem that solves the utility model adopts is: it is cylindric that the urceolus of model muffler air intake tube and wind outlet barrel all adopts hot rolling steel plate to roll on plate roller; Expand surface layer and core tube and go out the circular hole that to eliminate the noise, the zinc-plated sieve plate that the punching rate is 20%-45% at perforating press, on plate roller, roll into cylindric and coniform respectively with galvanized sheet.Twine at air intake tube and wind outlet barrel filling external application glass fibre cloth, the aluminium silicate wool with thin iron wire tighten is used as sound-absorbing material again.Cylindric urceolus and the expansion annular space filling aluminium silicate wool that surface layer constituted are by two ends, back ring closure plate welded closure, coniform core tube is behind filling aluminium silicate wool quilt, two ends put sealing with big roundlet closure plate respectively, be weldingly connected with boatswain chair and the connecting cylinder that expands surface layer again, the exhaust outlet of wind outlet barrel is welded with two cylindrical convex tendons can use the fixedly end tube of air duct of steel band clamp, and the flange plate of the exhaust outlet of air intake tube and the flange plate of safty shield use bolt tight.

The beneficial effects of the utility model are, and are rational in infrastructure, technology advanced person, intensity height, air quantity and air loss are little, and the effect that abates the noise is remarkable, owing to adopted zinc-plated sieve plate, can also adapt to mine air heavy wool mist, many dust, the rugged environment that temperature is big, life cycle is long.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Accompanying drawing 1 is the half sectional view of the utility model portable blower silencing apparatus.

1 roundlet head closure plate among the figure, 2 protect anti-cover, 3 protective housing flange plate, 4 air intake drum flange dishes, 5 connecting cylinders, 6 long boatswain chairs, 7 ring closure plates, 8 outer cylindrical casings, 9 core barrel shells, 10 aluminium silicate wool quilts, 11 expand surface layer barrel shell, 12 big round end closure plates, 13 ring closure plates, 14 connecting cylinders, 15 drop shot plates, 16 flange plate, 17 ventilating fan flange plate, 18 axial flow fans, 19 end tubes, 20 circular holes, 21 air intake tubes, 22 wind outlet barrels, 23 cylindric hole patterns, 24 coniform hole patterns.

In accompanying drawing 1, the expansion surface layer (11) of air intake tube (21) and wind outlet barrel (22) is wrapped a circle aluminium silicate wool earlier by (10), twine aluminium silicate wool by (10) with glass fibre cloth again, two ends and middle with thin iron wire encircling, level is filled in the outer cylindrical casing (8), the aluminium silicate wool quilt (8) that two ends are twined by glass cloth with the interior filling of ring closure plate sealing core tube (9), its two ends use roundlet head closure plate (1) and big round end closure plate (12) to block respectively, and then core tube (9) is weldingly fixed on connecting cylinder (5) and (14) with four long boatswain chairs (6) and four drop shot plates (15), and connecting cylinder (5) is weldingly connected with ring closure plate (7) and flange plate (4) respectively, connecting cylinder (14) links to each other with flange plate (16) with ring closure plate (13) respectively, use bolt by the flange plate (3) of equally distributed six circular holes of flange plate (4) (20) and protective housing (2) at last, nut, spring washer connects tight, and the junction plane between flange plate (3) and (4) and flange plate (16) and (17) adds the flange packing ring that material is an asbestos slate.(16) six circular holes of flange plate are connected tight with bolt, nut and spring washer with screw fan flange plate (17).Air intake tube (21) is connected with protective housing (2) with flange plate (3) by flange plate (4), and wind outlet barrel (22) passes through roundlet head closure plate (1) and four long boatswain chairs (6) of core tube (9) and holds tube (19) welding fixing.End tube (19) is fixed air duct with the twice convex tendon of its cylndrical surface and the steel band clamp of band circular hole, and bolt passes borehole jack upper cap nut on the steel band clamp tightly.The wind that screw fan produces enters the expansion surface layer (11) of air intake tube (21) and the muffler space that core tube (9) constitutes by protective housing (2), pass blower fan and enter the expansion surface layer (11) of wind outlet barrel (22) and the muffler space that core tube (9) constitutes again, by the air duct on end tube (19) is tightly delivered to working surface, the noise that screw fan is produced is reduced to about 90dB by 104dB and acts on, the effect that abates the noise is more remarkable, reaches standard-required.

Claims

1, a kind of novel portable blower silencing apparatus, air intake tube (21), wind outlet barrel (22) is urceolus (8), expand surface layer (11) and (9) three layers of concentric structure of core tube, the urceolus (8) that it is characterized in that air intake tube (21) and wind outlet barrel (22) is provided with the shape that rolls into cylindric (23) with hot rolling steel plate on plate roller, expands surface layer (11) and core tube (9) and is provided with the shape that rolls into cylindric (23) and coniform (24) with galvanized sheet in the eliminated the noise punching rate that perforating press is gone out at circular hole (25) sieve plate of 20%-45% on plate roller respectively.

2, novel portable blower silencing apparatus as claimed in claim 1, it is characterized in that being provided with the outside that can eliminate the noise at air intake tube (21) and wind outlet barrel (22) twines with glass fibre cloth, again with the aluminium silicate wool of thin iron wire tighten by surface layer (11) coniform (24) core tubes (9) welding fixes expanding with boatswain chair (6) and (15), the air intake end (4) of air intake tube (21) is provided with a safty shield (2).

3, novel portable blower silencing apparatus as claimed in claim 2, it is characterized in that at the urceolus that is full of sound-absorbing material aluminium silicate wool quilt (8) and expand the annular space that surface layer (11) constituted two ends each with ring closure plate (7) with to encircle closure plate (13) be welded closure.

4, novel portable blower silencing apparatus as claimed in claim 2, it is characterized in that each puts sealing with roundlet closure plate (1) and great circle closure plate (12) at the two ends of the core tube (9) that is full of sound-absorbing material, use four boatswain chairs (6) and (15) and connecting cylinder (5) and (14) expanded on the surface layer (11) to be weldingly connected again respectively.

5, novel portable blower silencing apparatus as claimed in claim 2 is characterized in that wind outlet barrel (22) air-out end is welded with the convex tendon end tube (19) with cylindrical fixedly air duct.

6, novel portable blower silencing apparatus as claimed in claim 5 is characterized in that being being connected of end tube (19) and air duct blocking with the steel band clamp of being with circular hole.