1、布袋除塵器負壓除塵系統，

1. Bag filter negative pressure dust removal system,

除塵器設置在通風機之前，流過通風機的氣體已經過除塵，含塵濃度較低，風機受磨損大大減低，運行壽命更長，處理初濃度高的含塵氣體時，一般會采用負壓除塵系統。

The dust collector is set before the ventilation fan, and the gas flowing through the ventilation fan has already been removed from the dust. The dust concentration is low, and the fan is greatly reduced in wear and tear, resulting in a longer operating life. When dealing with high initial concentration of dust containing gas, a negative pressure dust removal system is generally used.

除塵器和管道處于通風機的負壓段，容易吸入空氣，產生漏風。負壓除塵系統的漏風率為百分5—百分10，在負壓除塵系統設計中應采用措施盡可能減少除塵器和管道的漏風，以保證除塵器的良好運行。

The dust collector and pipeline are located in the negative pressure section of the ventilation fan, which can easily suck in air and cause air leakage. The leakage rate of the negative pressure dust removal system is 5-10%. In the design of the negative pressure dust removal system, measures should be taken to minimize the leakage of the dust collector and pipeline as much as possible to ensure the good operation of the dust collector.

布袋除塵器負壓除塵.凈化后的氣體直接由除塵器排入大氣，可不設煙筒；除塵器有一定的消聲作用，風機出口側也可設消聲器；有利節約除塵系統占地和初投資。

Bag filter negative pressure dust removal. The purified gas is directly discharged into the atmosphere by the dust collector without a chimney; The dust collector has a certain noise reduction effect, and a silencer can also be installed on the outlet side of the fan; Beneficial for saving land and initial investment in dust removal systems.

2、布袋除塵器正壓除塵系統，除塵器設置在通風機之后（正壓段或壓出段）。

2. The bag filter positive pressure dust removal system is installed after the ventilation fan (positive pressure section or pressure outlet section).

由于流過通風機的含塵氣體未經除塵器凈化，通風機的葉輪和機殼易遭粉塵磨損。因此，正壓除塵系統只適于在氣體含粉塵磨琢性弱、粉塵粒度小的條件下使用。，

Due to the dust containing gas flowing through the ventilation fan not being purified by the dust collector, the impeller and casing of the ventilation fan are prone to dust wear and tear. Therefore, the positive pressure dust removal system is only suitable for use under conditions where the gas contains weak dust grinding ability and small dust particle size.,

除塵器的維護結構簡單，如正壓袋式除塵器的維護結構需要密封，防雨.

The maintenance structure of the dust collector is simple, for example, the maintenance structure of the positive pressure bag filter needs to be sealed and rainproof