CN201425079Y

CN201425079Y - Muffler plate

Info

Publication number: CN201425079Y
Application number: CN2009200895069U
Authority: CN
Inventors: 苏景廉
Original assignee: Jincheng Zhenghai Environmental Protection Science & Technology Co Ltd
Current assignee: Jincheng Zhenghai Environmental Protection Science & Technology Co Ltd
Priority date: 2009-04-10
Filing date: 2009-04-10
Publication date: 2010-03-17
Anticipated expiration: 2019-04-10

Abstract

The utility model discloses a muffler plate, which is mainly composed of a cast iron plate and a rubber plate arranged at the lower part of the cast iron plate, wherein the thickness of the cast ironplate is from 2 to 5cm, and the thickness of the rubber plate 2 is from 0.5 to 2cm. Further, the surface of the cast iron plate is provided with a shallow slot the depth of which is from 0.5 to 1.5cm, and the shallow slot is a rectangular slot or an oval slot or a circular slot. As the muffler plate adopts the cast iron plate and the rubber plate and the compressive strength and the hardness of the cast iron plate close to carbon steel, the muffler plate has good damping and good corrosion resistance and is more suitable for bearing impact loading. At the same time, in the process of using, the shallow slot and the surface of cast iron can exist a layer of pulverized coal, helping to weaken the impact and greatly reducing the noise generated by friction. With simple structure, the mufflerplate can meet a variety of requirements of work environment on plate strength, reduce the impact of materials on equipment, significantly lower the frequency of replacement of the equipment steel plate, reduce costs, and increase the service life of the equipment.

Description

Muffler plate

Technical field

The utility model relates to the device of a kind of reduction and absorption of noise, relates in particular to a kind of muffler plate that is applicable to the sound-deadening and noise-reducing of devices such as screening in the coal course of working, fragmentation, chute, material feeding point.

Background technique

Present employed facility is all simply made by steel plate as picking up equipment such as cash bucket, chute in the colliery, when the carbon piece is in contact with it, because bump and friction can be sent ear-piercing noise.

As everyone knows, noise except that the ear-drum of meeting harm people, to the people psychologically, all can produce negative influence mentally, so the people who under noise, lives for a long time, on its physiology, all be subjected to serious injury psychologically.

Follow development of science and technology, the machinery of all stereo sets, the traffic tool, factory, the construction of building site etc., none does not produce noise, and the noise in many places is already to producing serious injury in wherein people.

Noise generally can produce following harm:

The hearing impairment that noise causes

Noise is that injury ear phonoreceptor official's sensation is sent out cell, comes to harm in case sensation is sent out cell, then restores never.Feel that high-frequency sensation sends out the easiest injury that is subjected to noise of cell, so common people's hearing has been subjected to noise injury, listened force inspecting but often unconscious if do, to can't link up the time, late up to hearing disability with the people.

Noise causes the cardiovascular injury

Acute post noise exposure often causes hypertension, then secretes rising at 100 decibels of ten minutes following adrenal hormones, and sympathetic nerve is by excitement.Though the epidemiology survey result is inconsistent, nearest several broad scale research show the exposure of long duration noise and the relation that hypertension is proportionate.Exposed 70 decibels to 90 decibels of noises 5 years, it obtains hypertensive danger up to 2.47 times.

Under high-frequency noise, common people have lather to noise, passionnate situation to the influence of psychology.Discover the operational site that noise is high more, accidental event is many more, and productivity is low more.

Existing muffler plate is mainly used in sound insulation, sound-absorbing, the main materials such as centrifugally glass-wool, paper perforation gypsum board that adopt, be mainly used in the sqouynd absorption lowering noise in the large spaces such as gymnasium, workshop, that sound absorbent can be made as requested is tabular, column, cone or other shaped bodies.Because the intensity of sheet material is not had specific (special) requirements, existing muffler plate can't be applied to the sound-deadening and noise-reducing of devices such as screening in the coal course of working, fragmentation, chute, material feeding point.

The model utility content

In view of this, the purpose of this utility model provides a kind of muffler plate, and this device can effectively reduce noise, improves working environment, and can satisfy the requirement of various working environments to timber intensity, enlarges using scope, prolongs the working life of equipment.

Technical solutions of the utility model realize with following method:

A kind of muffler plate wherein, mainly is made up of cast iron plate 1 and the rubber plate 2 that is arranged on cast iron plate 1 bottom.

Further, described cast iron plate 1 thickness is 2-5cm, and the thickness of rubber plate 2 is 0.5-2cm.

Further again, described cast iron plate 1 thickness is 3cm, and the thickness of rubber plate 2 is 1cm.

Further again, described cast iron plate 1 surface is provided with shallow slot 3.

Further again, described shallow slot 3 degree of depth are 0.5-1.5cm.

Further again, described shallow slot 3 degree of depth are 1cm.

Further again, described shallow slot 3 is rectangle groove or elliptical slot or circular trough.

The beneficial effects of the utility model are:

Because the utility model has adopted cast iron plate and rubber plate, cast iron plate compressive strength and hardness are near carbon steel, and damping property is good, is more suitable for the load that withstands shocks, good corrosion resistance; Simultaneously, shallow slot and Cast Iron Surface can be detained one deck coal dust in the using process, and this will help to weaken impact, and can cut down the noise that is produced by friction greatly.

Rubber plate has significant elasticity, can stand 100% distortion and unlikely destruction, and can return to original shape again rapidly after external force discharges, it is in light weight, and damping is big, can contact closely with object, reduce vibration frequency, thereby noise frequency decreases also.

Cast iron plate is hit and occurs bending and deformation and sink, compressing rubber plate generation elastic strain.Under continuous percussion, cast iron plate and rubber plate double vibrations are in this process, the internal friction loss of cast iron plate and rubber plate and and air between frictional loss, change mechanical energy into heat energy, effectively reduced noise frequency and power, can reduce noise 5-10dB.This muffler plate is simple in structure, can satisfy the requirement of various working environments to timber intensity, reduces the impact of material to equipment, greatly reduces the replacing frequency of equipment steel plate, has reduced cost, has improved the working life of equipment, has improved working environment simultaneously.

Description of drawings

Fig. 1 is a plan view of the present utility model.

Fig. 2 is the sectional view of Fig. 1.

Embodiment

Below in conjunction with accompanying drawing the technical solution of the utility model is described further.

By Fig. 1 and Fig. 2 as can be seen, this muffler plate mainly is made up of cast iron plate 1 and the rubber plate 2 that is arranged on cast iron plate 1 bottom, four jiaos of cast iron plate 1 and the rubber plate 2 that is positioned at cast iron plate 1 bottom are provided with bolt hole, and cast iron plate 1 is fixedly installed togather by the bolt 4 that is screwed in the bolt hole with rubber plate 2.

It can also be seen that by Fig. 1 described cast iron plate 1 surface becomes the regularly arranged rectangle shallow slot 3 that is provided with of matrix.

During use, true form size according to equipment, design this muffler plate shape, by the bolt 4 on 2 four jiaos of cast iron plate 1 and the rubber plates this muffler plate is fixedly mounted on the equipment needed thereby then, during work, cast iron plate 1 is hit and occurs bending and deformation and sink, and elastic strains take place compressing rubber plate 2, under continuous percussion, cast iron plate 1 and rubber plate 2 double vibrationses, in this process, the frictional loss of cast iron plate 1 and rubber plate 2 and and air between frictional loss, change mechanical energy into heat energy, noise frequency and power have effectively been reduced, can reduce noise 5-10dB, this muffler plate is simple in structure, can satisfy the requirement of strength of various environment to sheet material, reduce the impact of material to equipment, greatly reduce the replacing frequency of equipment sheet material, in the working life of having improved equipment, greatly reduce cost.

Claims

1, a kind of muffler plate is characterized in that: mainly be made up of cast iron plate (1) and the rubber plate (2) that is arranged on cast iron plate (1) bottom.

2, muffler plate according to claim 1 is characterized in that: described cast iron plate (1) thickness is 2-5cm, and the thickness of rubber plate (2) is 0.5-2cm.

3, muffler plate according to claim 1 is characterized in that: described cast iron plate (1) thickness is 3cm, and the thickness of rubber plate (2) is 1cm.

4, muffler plate according to claim 1 is characterized in that: described cast iron plate (1) surface is provided with shallow slot (3).

5, muffler plate according to claim 4 is characterized in that: described shallow slot (3) degree of depth is 0.5-1.5cm.

6, muffler plate according to claim 5 is characterized in that: described shallow slot (3) degree of depth is 1cm.

7, muffler plate according to claim 6 is characterized in that: described shallow slot (3) is rectangle groove or elliptical slot or circular trough.