對于除塵器來說大多數人都比較熱衷于了解除塵設備的工作原理及除塵設備的，很少有了解它的正壓與負壓的，甚都不知道除塵設備的正壓與負壓是什么。那么我們__來區分一下它們的區別，方便今后使用除塵設備時使其達到_優的除塵效果，它們有著各自不同的特點，在造型時_要有詳細的了解，這點很重要。

For dust collectors, most people are enthusiastic about understanding the working principle of dust removal equipment and the price of dust removal equipment. There are few who know its positive pressure and negative pressure, and even do not know what the positive pressure and negative pressure of dust removal equipment are. So let's differentiate them to facilitate the future use of dust removal equipment to achieve optimal dust removal effects. They have their own unique characteristics, and it is important to have a detailed understanding when modeling.

除塵設備的正壓：當含塵氣體由風機送入除塵設備的塵端，過濾后由凈端排入大氣。其主要特點是結構不嚴，對環境造成污染。由于凈化后的氣體直接排入大氣，因此對于連續操作的除塵設備各室，如因安裝需要，清灰的電動閥門放在個室內塵端的進口支管上，支管從各室灰斗接入，由于熱煙氣進入，提高了灰斗內的溫度，則各室塵端和灰斗之間應互相嚴密隔開，這樣凈端_可以不設置隔板，煙氣直接從除塵設備的頂部排空即可，也可以引集中設置的高煙筒排氣，使煙氣中的有害氣體成分不于危害附近的環境。只有煙氣露點低于60℃，并且氣流分布均勻，無氣流停滯的死角時，才能采用這種形式，不然在寒冷地區除塵器的內部將產生嚴重的凍結。除塵設備的外壁一般不保溫，嚴密性也要求不高，因此造價相對低一些。

Positive pressure of dust removal equipment: When the dusty gas is sent to the dust end of the dust removal equipment by the fan, it is filtered and discharged into the atmosphere from the clean end. Its main characteristic is its loose structure, which causes pollution to the environment. Due to the direct discharge of purified gas into the atmosphere, for continuous operation of dust removal equipment in each room, if necessary for installation, the electric valve for dust removal is placed on the inlet branch pipe of the indoor dust end, which is connected to the ash hopper in each room. Due to the entry of hot flue gas, the temperature inside the ash hopper is increased. Therefore, the dust ends of each room and the ash hopper should be tightly separated from each other. In this way, the net end can be left without partitions, and the flue gas can be directly discharged from the top of the dust removal equipment, or it can be led to the centralized high chimney for exhaust, so that the harmful gas components in the flue gas do not harm the surrounding environment. This form can only be used when the dew point of the flue gas is below 60 ℃, the airflow is evenly distributed, and there is no dead angle of airflow stagnation, otherwise serious freezing will occur inside the dust collector in cold areas. The outer wall of dust removal equipment is generally not insulated and does not require high tightness, so the cost is relatively low.

風機易受磨損，因為風機處于含塵一側，當氣流含塵濃度大時，塵粒粗而硬時，風機易受磨損。由于除塵設備的內部為正壓，含塵氣體必然從除塵設備的不嚴密的地方外溢。所以不易安裝在室內，也不易處理毒性大的含塵煙氣。但是它的經濟性比較好，除塵設備的結構可以簡單一些，漏風不影響使用效果，從而減少除塵設備的處理風量，除塵設備較小。

Fans are prone to wear and tear because they are located on the dusty side. When the dust concentration in the airflow is high and the dust particles are coarse and hard, the fans are prone to wear and tear. Due to the positive pressure inside the dust removal equipment, dusty gases will inevitably spill out from the loosely sealed areas of the equipment. So it is not easy to install indoors, and it is also not easy to handle toxic dusty smoke. However, its economy is relatively good. The structure of the dust removal equipment can be simpler, and air leakage does not affect the use effect, thereby reducing the processing air volume of the dust removal equipment. The dust removal equipment is smaller.

除塵設備負壓的特點：要求除塵設備的外殼嚴格密封、承受負壓大、結構強度高。吸入式布袋除塵器全部處于負壓狀態如結構上漏風，勢必影響除塵設備的除塵效果，增加除塵設備的阻力，并將提高排風機的負荷。處理露點溫度60℃以上的煙氣時，外殼及灰斗均應保溫，漏斗內設停風加熱器，以免冷凝出水分，發生粘結腐蝕。風機免收粉塵的磨損，壽命長，運行穩定，含塵氣流不外溢，環境條件好。

The characteristics of negative pressure in dust removal equipment: the shell of the dust removal equipment is required to be strictly sealed, withstand high negative pressure, and have high structural strength. If the suction bag filter is in a negative pressure state and there is structural air leakage, it will inevitably affect the dust removal effect of the dust removal equipment, increase the resistance of the dust removal equipment, and increase the load of the exhaust fan. When dealing with flue gas with a dew point temperature above 60 ℃, the outer shell and ash hopper should be insulated, and a stop air heater should be installed inside the funnel to prevent condensation of water and the occurrence of adhesive corrosion. The fan is free from dust wear and tear, has a long service life, operates stably, and the dusty airflow does not overflow. The environmental conditions are good.