CN209780928U

CN209780928U - Novel tube-shape stock muffler

Info

Publication number: CN209780928U
Application number: CN201920532919.3U
Authority: CN
Inventors: 范子毅; 袁高伟; 代星军; 张全义; 孙洋洋
Original assignee: Yongcheng Coal and Electricity Holding Group Co Ltd
Current assignee: Yongcheng Coal and Electricity Holding Group Co Ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2019-12-13
Anticipated expiration: 2029-04-19

Abstract

The utility model relates to a novel cylindrical anchor rod silencer, which comprises a connecting pipe, an outer cylinder body, a sieve hole pipe, silencing cotton, an air outlet pipe and a hoop; the outer side of the sieve hole pipe is coaxially provided with an outer cylinder body, and the sieve hole pipe and the end part of the outer cylinder body are sealed and fixed through an end cover and a flange which are welded at the end part; silencing cotton is filled between the sieve hole pipe and the outer cylinder body; the connecting pipe is welded on the end cover, and the air outlet pipe is welded on the flange end cover which can be fastened with the flange; the anchor ear is arranged on the outer barrel and used for fixing with the anchor rod machine; the utility model discloses compact structure, noise reduction effect is good, long service life, low cost through changing to the noise pollution who uses novel muffler greatly reduced job site in the pit, has reduced the injury to on-the-spot worker's mind and body, has reduced the deaf morbidity probability of occupational noise, has played better guard action to the physical and mental health of assurance worker.

Description

Novel tube-shape stock muffler

Technical Field

The utility model belongs to the engineering machine tool field, concretely relates to novel tube-shape stock muffler.

Background

At present, a roof bolter used in the coal mine industry can transmit large harsh noise from a silencing cover during working, and although the maximum noise value marked on the specification is less than or equal to 98dB (A), the actually measured noise value on site is up to 124dB (A). Workers who operate on site when using the bolting machine in the underground coal mine are used for noise reduction in a mode of wearing 3M foam cotton earplugs, the maximum noise reduction value of the earplugs is 29dB (A) even if the earplugs are worn completely qualified, so that the noise which is contacted after the workers wear the earplugs is still over 95dB (A), the noise value which is far beyond the specified standard requirement of being capable of being contacted for a long time is not higher than 85dB (A), and the workers can easily develop occupational noise deafness and cause serious injury to the bodies and the mind after working in the environment for a long time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at carrying out noise reduction treatment to current roofbolter noise, through design test many times, made a novel tube-shape muffler, through the test, noise reduction effect is very obvious.

The utility model adopts the technical proposal that: a novel cylindrical anchor rod silencer comprises a connecting pipe, an outer cylinder, a sieve hole pipe, silencing cotton, an air outlet pipe and a hoop; an outer cylinder body is coaxially arranged on the outer side of the sieve hole pipe, and the sieve hole pipe and the end part of the outer cylinder body are sealed and fixed through an end cover and a flange which are welded on the end part; silencing cotton is filled between the sieve hole pipe and the outer cylinder body; the connecting pipe is welded on the end cover, and the air outlet pipe is welded on the flange end cover which can be fastened with the flange; the outer diameters of the connecting pipe and the air outlet pipe are slightly smaller than the inner diameter of the sieve mesh pipe; the anchor ear is arranged on the outer barrel and used for fixing with the anchor rod machine; the end part of the connecting pipe is provided with a threaded interface which is used for being connected with an air outlet of the anchor rod machine; the radius of the flange is larger than that of the sieve hole pipe.

The utility model discloses the beneficial effect who produces is: the utility model has the advantages of compact structure, noise reduction is effectual, long service life, low cost, more critical through changing to the noise pollution who uses novel muffler greatly reduced job site in the pit, reduced the injury to on-the-spot worker's mind and body, reduced the deaf morbidity probability of occupational noise, played better guard action to the physical and mental health of assurance worker.

Drawings

Fig. 1 is a schematic structural view of the present invention;

In the figure: 1-connecting pipe, 2-outer cylinder, 3-noise reduction cotton, 4-sieve hole pipe, 5-hoop, 6-bolt fixing hole, 7-flange, 8-screw interface, 9-air outlet pipe and 10-flange end cover.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The utility model relates to a novel tube-shape stock muffler adopts the combined type amortization mode that microperforation amortization and hindering nature amortization combined together. The silencer is arranged at an air outlet of the anchor rod machine and is used for carrying out noise reduction treatment on the anchor rod machine. Because need minimize the air-out pressure loss of stock machine when reaching obvious noise reduction effect, otherwise the reduction of air-out pressure can reduce the use moment of torsion of stock machine to influence the normal use of stock machine.

The main structure of the utility model comprises a connecting pipe 1, a sieve hole pipe 4, an outer cylinder body 2 and a hoop 5. Wherein outer barrel 2 adopts the cold drawing system of thickness for 2mm, and the diameter is 110mm, and inside is for using the mesh tube 4 that the diameter of micropore board system of rolling up is 50mm, mesh tube 4 and outer barrel 2 coaxial arrangement, and its both ends are sealed through welded end cover and flange 7 respectively to at its middle intermediate layer packing amortization cotton, play the combined type noise elimination that resistance noise elimination and micropore board noise elimination combined together, can effectively filter the well, high frequency noise that the stock machine produced, noise cancelling effect is better. The actually measured maximum noise value of the silencing cover of the original machine is over 124dB (A) when the silencer works, and the actually measured noise value is reduced to 90.4dB (A) after the silencer is used, so that the noise reduction effect is very obvious compared with the noise value reduced by 33.6dB (A). The end cover at the one end of sieve pore pipe 4 is equipped with connecting pipe 1, goes out the welding of tuber pipe 9 and on can with the flange end cover 10 of flange fastening, and the diameter of connecting pipe 1 and tuber pipe 9 is less than sieve pore pipe 4 slightly.

The hoop 5 is arranged on the outer cylinder body 2. Staple bolt 5 adopts the cold drawing book system that thickness is 2mm to use bolted connection to fix the outer barrel 2 of muffler on the stock machine gas leg, rock or drop when reducing the operation. The connecting pipe 1 is processed by adopting a 1.5-inch galvanized steel pipe, a threaded interface 8 is processed at the end part, and the threaded interface 8 plays a role in transiting and connecting the air outlet of the anchor rod machine and the connecting pipe.

The utility model provides a flange 7's diameter is greater than outer barrel 2's diameter, and it has bolt fastening hole 6 to be located to open on the flange 7 in the 2 outsides of outer barrel, links to each other with flange end cover 10 on the outer barrel through the bolt. The purpose of this is because the silencing cotton 3 will be soaked with oil after a period of use, resulting in the reduction of the silencing effect of the silencing cotton, so it is necessary to open the flange end cover 10 and replace the silencing cotton 3.

The utility model discloses a tubulose design, aerodynamic performance is good, no loss of pressure, and minimum pipe diameter matches with the aircraft nose air outlet, and the windage can neglect, consequently can guarantee that the moment of torsion of roofbolter can not descend. The integral structure is compact, the weight of the whole part is about 2kg, the upper connector is only required to be screwed into the screw mouth elbow during installation, and the barrel is fixed together with the anchor rod legs by using the hoop, so that the use is convenient and fast, and the device is firm and reliable.

Claims

1. A novel cylindrical anchor rod silencer comprises a connecting pipe, an outer cylinder, a sieve hole pipe, silencing cotton, an air outlet pipe and a hoop; an outer cylinder body is coaxially arranged on the outer side of the sieve hole pipe, and the sieve hole pipe and the end part of the outer cylinder body are sealed and fixed through an end cover and a flange which are welded on the end part; silencing cotton is filled between the sieve hole pipe and the outer cylinder body; the connecting pipe is welded on the end cover, and the air outlet pipe is welded on the flange end cover which can be fastened with the flange; the outer diameters of the connecting pipe and the air outlet pipe are slightly smaller than the inner diameter of the sieve mesh pipe; the anchor ear is arranged on the outer barrel and used for fixing with the anchor rod machine; the end part of the connecting pipe is provided with a threaded interface which is used for being connected with an air outlet of the anchor rod machine; the radius of the flange is larger than that of the sieve hole pipe.