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Vacuum pump silencing device

A noise reduction device and vacuum pump technology, which is applied in the direction of pumps, pump components, variable capacity pump components, etc., can solve the problem of excessive noise at the vacuum pump exhaust port, etc.

Pending Publication Date: 2019-10-08
HONGTA TOBACCO GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of excessive noise at the vacuum pump exhaust port, to provide a vacuum pump noise reduction device, which can reduce the noise at the vacuum pump outlet exhaust, and to fix the device to the vacuum pump exhaust port through flange connection. On the empty pipeline, reduce the excessive noise caused by the vacuum pump work, so that it meets the relevant national standards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The vacuum pump muffler device of the present invention uses DN450 outer pipes to cover the internal sound-absorbing material, and arranges five DN80 muffler pipes in a cross shape inside, and the muffler pipes are arranged in an S-shape to increase the internal sound-absorbing stroke and reduce noise. The perforated sound insulation board is installed outside the pipe for primary sound absorption, and the polyester fiber sound-absorbing cotton is filled outside the perforated sound insulation board for secondary sound absorption. The noise of the vacuum pump evacuating the air is partially absorbed inside the muffler.

[0027] The measured noise at the exhaust port of the original vacuum pump is up to 85 decibels, and the measured minimum is 80 decibels. After using this vacuum pump silencer device, the measured noise control is up to 64 decibels, and the measured minimum is 60 decibels, which effectively reduces the noise of the vacuum pump and makes the vacuum pump rea...

Embodiment 2

[0029] A vacuum pump noise reduction device, the vacuum pump noise reduction device is installed at the outlet of the vacuum pump exhaust port, the vacuum pump noise reduction device includes a flange, a noise reduction pipe, and a punched sound insulation board;

[0030] - the flange, the first end is connected to the flange of the outlet end of the vacuum pump, and the second end is connected to the inner pipe of the evacuation outlet pipeline of the vacuum pump;

[0031] - the silencer pipe, which is arranged in an S shape inside the outer pipe of the vacuum pump's evacuation outlet pipe;

[0032] -Punched sound insulation board, wrapped on the outer wall of the sound deadening pipe.

Embodiment 3

[0034] The difference from Embodiment 1 is that the polyester fiber sound-absorbing cotton is also included, and the polyester fiber sound-absorbing cotton is filled inside between the perforated sound-insulating board and the outer pipe of the vacuum pump's evacuation outlet pipe.

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Abstract

The invention discloses a vacuum pump silencing device. The vacuum pump silencing device is installed on a vacuum pump emptying opening outlet pipeline of DN250, is connected to the pipeline for sealing through flanges, and is internally provided with five silencing pipes of DN80, a punched sound insulation plate is installed outside the silencing pipes for primary silencing, and then a sound absorption material is used for filling a pipeline of DN450 for secondary silencing. The silencing pipes are arranged inside the pipeline of DN450 in an S shape, so that the retention time of emptied airin the silencing device is prolonged, and the silencing function is enhanced; the punched sound insulation plate is wrapped around the outer walls of the silencing pipes to perform primary silencing on the emptied air, and air vibration noise is reduced; and according to the vacuum pump silencing device, out-of-limit noise brought during working of a vacuum pump can be reduced, and especially, noise generated by a high-power vacuum pump device capable of providing vacuum required by a cigarette production industry can be reduced to meet relevant standards of China.

Description

technical field [0001] The invention belongs to the field of sound-absorbing devices, and in particular relates to a sound-absorbing device for greatly reducing the noise of the vacuum pump evacuated air, and is especially suitable for the noise generated by a high-power vacuum pump device required by the cigarette production industry. Background technique [0002] The vacuum pump is responsible for the vacuum required for production and is used for packaging and other processes in the cigarette production process. At present, Q235 steel pipes with a diameter of DN250 are used to remove the air generated by the vacuum pump, and the pipeline extends 30 meters to remove the evacuated air. real [0003] Most of the empty pumps provide vacuum for the packing workshop, and the opening time is more than 18 hours a day. The main noise area of ​​the vacuum pump is the outlet section of the exhaust port, and the noise reaches about 85 decibels. According to the national standard, "G...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B39/00F04B37/14
CPCF04B39/0055F04B39/005F04B39/0083F04B37/14
Inventor 张宗恒牟超智陈允玮竹松程慧李荣龚策合蕊王辉任富兵
Owner HONGTA TOBACCO GRP
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