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Low-noise air filter

An air filter, low noise technology, applied in the direction of fuel air filter, combined air filter and muffler, intake muffler, etc., can solve the problem of unfavorable air filter for air purification and unfavorable filtering The dust removal on the components and the short service life of the filter components can ensure the filtering and purification efficiency, the noise reduction effect is remarkable, and the service life is prolonged.

Active Publication Date: 2017-01-04
山东天厚石油科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this technical solution can achieve a good noise reduction effect, because the air filter generates suction through the air outlet when the air is pumped in, and then realizes the air flow in the air filter, therefore, it ignores the noise generation The larger one is at the air outlet, and if the guide piece is set at the air inlet, it will inevitably produce a large air inlet resistance, which is not conducive to the purification of the air by the air filter, and it is realized by using the rigid guide piece to resonate Noise reduction, its noise reduction effect is not ideal, it needs to be improved to achieve the best noise reduction effect
In addition, the above-mentioned structure is also not conducive to the removal of dust on the filter element, resulting in a short service life of the filter element, which needs to be replaced frequently

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] An elastic polyurethane material for bonding on a sound-absorbing board, the elastic polyurethane material is composed of the following materials in parts by weight: 100 parts of TPU resin, 6 parts of hexamethoxymethyl melamine, 11 parts of fumed silica, and 7 parts of cotton fiber 1 part, 1 part of coupling agent, 0.5 part of antioxidant and 1 part of dispersant, the cotton fiber is obtained by dispersing the white cotton linter fiber obtained after the initial processing of white cotton through a roller gin, and the preparation method of elastic polyurethane material Include the following steps:

[0040] Step 1. To make TPU resin, put 26% simethicone oil, 38.5% TPR and 6% linseed oil in a turbo mixer and stir evenly, and heat the mixture to 100°C. Heat the silicone resin with a ratio of 7% to 160°C until it melts, then add it to the mixture, keep the temperature of the mixture at 100°C, and stir for 3 hours at a stirring speed of 600rad / min to obtain a mixture;

[00...

Embodiment 2

[0046] A kind of elastic polyurethane material that is used for bonding on the sound-absorbing board, elastic polyurethane material is made up of the following materials by weight: 98 parts of TPU resin, 6 parts of hexamethoxymethyl melamine, 11 parts of fumed silica, 5 parts of cotton fiber 1 part, 1 part of coupling agent, 0.5 part of antioxidant and 0.5 part of dispersant, the cotton fiber is made by dispersing the white cotton linter fiber obtained after the initial processing of white cotton through a roller gin, and the preparation method of elastic polyurethane material Include the following steps:

[0047] Step 1. To make TPU resin, put 26% simethicone oil, 38.5% TPR and 6% linseed oil in a turbo mixer and stir evenly, and heat the mixture to 100°C. Heat the silicone resin with a ratio of 7% to 160°C until it melts, then add it to the mixture, keep the temperature of the mixture at 100°C, and stir for 3 hours at a stirring speed of 600rad / min to obtain a mixture;

[0...

Embodiment 3

[0053] An elastic polyurethane material for bonding on a sound-absorbing board, the elastic polyurethane material is composed of the following materials in parts by weight: 100 parts of TPU resin, 7 parts of hexamethoxymethyl melamine, 12 parts of fumed silica, and 6 parts of cotton fiber 1 part, 1 part of coupling agent, 0.5 part of antioxidant and 1 part of dispersant, the cotton fiber is obtained by dispersing the white cotton linter fiber obtained after the initial processing of white cotton through a roller gin, and the preparation method of elastic polyurethane material Include the following steps:

[0054] Step 1. To make TPU resin, put 26% simethicone oil, 38.5% TPR and 6% linseed oil in a turbo mixer and stir evenly, and heat the mixture to 100°C. Heat the silicone resin with a ratio of 7% to 160°C until it melts, then add it to the mixture, keep the temperature of the mixture at 100°C, and stir for 3 hours at a stirring speed of 600rad / min to obtain a mixture;

[00...

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Abstract

The invention discloses a low-noise air filter, which comprises an upper casing provided with an air outlet, wherein the periphery of a filtering element is fixed in a filtering cavity through a fixing device; the fixing device comprises a vibration cabin and an elastic skirt edge; in the filtering cavity, a silencing plate is arranged above the filtering element; one end of the silencing plate is fixedly connected onto the wall surface of one side of the upper casing to form a fixed end; a gap is formed between the other end of the silencing plate and the wall surface of the other side to form a cantilever end of the silencing plate; an air outlet is formed above the fixing end. The silencing plate is arranged above the filtering element, i.e., a helmholtz resonator is arranged in an air outlet position; the influence of a guide sheet is eliminated; the filtering purification efficiency of the air filter is favorably ensured; the noise reduction effect is obvious; meanwhile, the vibration cabin is fixedly arranged on the fixing device for fixing the filtering element, so that dust and sundries attached onto the filtering element can fall off; further, the dust clearing problem is solved; the use period of the filtering element is greatly prolonged.

Description

technical field [0001] The invention relates to the field of engine supporting equipment, in particular to a low-noise air filter. Background technique [0002] When the piston machinery (internal combustion engine, reciprocating compressor, etc.) is working, if the inhaled air contains impurities such as dust, it will aggravate the wear of the parts, so an air filter must be installed to provide clean air for these mechanical equipment, so as to Prevent these mechanical equipment from inhaling air with impurity particles during work to increase the chance of abrasion and damage. The main components of the air filter are the filter element and the casing. The filter element is the main filtering part, which is responsible for the filtration of gas, and the casing is the external structure that provides the necessary protection for the filter element. The working requirement of the air filter is to be able to undertake high-efficiency air filtration work, not to add too much...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M35/14F02M35/024F02M35/08F02M35/12C08L75/04C08L83/04C08L1/02C08K13/02C08K5/3492C08K3/36B29B7/28
CPCB29B7/286C08L75/04C08L2205/035C08L2205/16F02M35/02416F02M35/086F02M35/1261F02M35/1272F02M35/14C08L83/04C08L1/02C08K13/02C08K5/34922C08K3/36
Inventor 李燕
Owner 山东天厚石油科技有限责任公司
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