*近幾年，負壓風機以其自然通風成效顯著，使用壽命長，安裝簡單，花費便宜等優點，備受眾多飼養客戶鐘愛。現在市場上負壓風機質量、樣式、規格型號、排風量主要參數各不相同，促使負壓風機的型號規格達到幾百種。做為養殖場，應該怎么選擇適合自己用的負壓風機型號規格呢?

　　依據排風汽體的成份選擇

　　在選擇負壓風機型號規格前，一定要考慮清楚買負壓風機主要是想解決什么難題，科學研究一下排風環境中的氣體成分是不是有持續高溫、油漬、易燃易爆物品、腐蝕等。僅有弄清楚自然環境汽體中的成分是什么，才可以確定什么材質品質的負壓風機適合自己應用。目前市面上負壓風機關鍵有三種材料生產制造：玻璃鋼材料的負壓風機、鍍鋅板金屬材料的負壓風機和304不銹鋼材料的防腐蝕負壓風機。假如排風的氣體成分里帶有強酸強堿腐蝕，就一定要選玻璃鋼防腐或304不銹鋼板防腐蝕材料的負壓風機。假如排風的氣體溫度不太高，并沒有腐蝕，選擇鍍鋅板材料的負壓風機就能夠。養殖廠內二氧化氮一般都比較重，而二氧化氮具備腐蝕，因此養殖廠離心風機**選擇防腐蝕材料的。

　　依據預安裝位置的尺寸選擇

　　負壓風機絕大多數是組裝在門窗和墻壁的。因為降低對客戶場所的毀壞，預埋組裝的部位一定要和負壓風機的規格型號尺寸相符合。客戶組裝負壓風機的部位尺寸決定了負壓風機的規格型號尺寸。單強臺風機的排風量、輸出功率等盡可能選擇和安裝位置尺寸貼近的負壓風機。假如安裝位置非常大，選擇的負壓風機不大，排風實際效果毫無疑問不太好，并且做密封性防降水漏水難以解決。假如負壓風機尺寸超過安裝位置尺寸，負壓風機毫無疑問組裝不上去。因此，在購買前一定要將組裝離心風機的部位尺寸開展精確測量，并拿筆記下來。在購買負壓風機的情況下，可以把安裝位置的尺寸狀況告知業務員，融合業務員的提議選擇合適的負壓風機。

　　依據自身的費用預算選擇

　　一切商品都是有價錢多少之分，負壓風機也是如此。撇開假冒偽劣產品的仿冒負壓風機不用說，就靠譜大型廠知名品牌的負壓風機來講，因為材料、加工工藝、規格型號、配備等不一樣，負壓風機的價位也不一樣。一般來說，防腐蝕負壓風機的費用要高過鍍鋅板金屬材料負壓風機;同樣樣式系列產品的負壓風機，大規格型號尺寸的負壓風機價格對比小規格型號尺寸的貴些;電機直驅式傳輸的負壓風機價格對比傳動帶式傳輸的負壓風機價格高。要是有充足的費用預算，就選304不銹鋼板負壓風機，終究304不銹鋼板負壓風機要比鍍鋅板負壓風機經久耐用。假如時下資產不充裕，就選擇鍍鋅板負壓風機。簡單來說，費用預算充裕就選定的，資金短缺就選價格便宜的。

　　依據使用年限選擇

　　負壓風機組裝在戶外，常常要日曬雨淋，會出現一個使用年限的狀況存有。鍍鋅板金屬材料負壓風機使用一段時間后邊框會銹蝕浸蝕，一般可用三到五年。玻璃鋼防腐和304不銹鋼板負壓風機是選用耐腐蝕浸蝕原材料制做，邊框絕不腐爛銹蝕，非人為破壞的能用30年左右。如果是準備長期使用得話，就選擇玻璃鋼防腐或304不銹鋼板防腐蝕壓風機。

　　依據維護保養維護難易程度選擇

　　一切一種家用電器工業設備商品都具有維修保養的情況，負壓風機使用情況下也難以避免會存有這一難題。玻璃鋼負壓風機基本上選用的是電機立即推動風扇葉片旋轉造成排風，使用時維護保養維護便是清理污漬塵土，很容易。鍍鋅板金屬材料負壓風機基本上是選用電機根據皮帶盤，用傳動帶推動風扇葉片旋轉造成排風，應用一段時間傳動帶衰老損壞，必須常常更換皮帶，維修保養較為不便，維護保養的費用成本也高過玻璃鋼負壓風機。

　　依據排風量多少及實際效果選擇

　　在同樣規格型號尺寸，同樣電機耗能的情況下，玻璃鋼負壓風機的排風量基本都大于鍍鋅板金屬材料負壓風機，這是因為玻璃鋼負壓風機的電機質量、風扇葉片排風視角均高過鍍鋅板金屬材料負壓風機。一般玻璃鋼防腐負壓風機的電機選用10級之上高扭矩的純銅線冷軋鋼板電機，鍍鋅板金屬材料負壓風機基本上選用4級上下的一般一般電機。

　　以上關于負壓風機選型建議僅供各位養殖企業老板參考!瑞柘環保專業生產銷售各種正壓負壓風機、羅茨風機、沉水風機!

　　In recent years, the negative pressure fan has been favored by many breeding customers for its remarkable natural ventilation effect, long service life, simple installation, low cost and other advantages. Now the main parameters of negative pressure fan in the market are different, such as quality, style, specification and model, and exhaust air volume, which makes the model and specification of negative pressure fan reach hundreds. As a farm, how should I choose the model and specification of the negative pressure fan suitable for my own use?

　　Select according to the composition of exhaust steam body

　　Before selecting the model and specification of the negative pressure fan, we must consider clearly what problems we want to solve when buying the negative pressure fan, and scientifically study whether the gas composition in the exhaust environment has sustained high temperature, oil stains, inflammables and explosives, corrosion, etc. Only by making clear what is the composition of the natural environment steam, can we determine what kind of negative pressure fan is suitable for our own application. At present, there are three key materials for manufacturing negative pressure fans in the market: negative pressure fans made of glass fiber reinforced plastics, negative pressure fans made of galvanized sheet metal and anti-corrosion negative pressure fans made of 304 stainless steel. If there is strong acid and alkali corrosion in the gas composition of the exhaust, we must choose the negative pressure fan made of FRP or 304 stainless steel plate anti-corrosion materials. If exhaust gas temperature is not too high and there is no corrosion, negative pressure fan made of galvanized sheet material can be selected. Nitrogen dioxide in the breeding plant is generally heavy, and nitrogen dioxide has corrosion, so it is best to choose anti-corrosion materials for the centrifugal fans in the breeding plant.

　　Size selection according to pre installation position

　　Most negative pressure fans are assembled on doors, windows and walls. As the damage to the customer's site is reduced, the embedded assembly part must be consistent with the specification, model and size of the negative pressure fan. The size of the part where the customer assembles the negative pressure fan determines the specification, model and size of the negative pressure fan. As far as possible, the negative pressure fan close to the installation position and size shall be selected for the exhaust air volume and output power of the single strong fan. If the installation position is very large, the selected negative pressure fan is not large, the actual effect of ventilation is undoubtedly not very good, and it is difficult to solve the problem of water leakage by making sealing to prevent precipitation. If the size of the negative pressure fan exceeds the size of the installation position, there is no doubt that the negative pressure fan cannot be assembled. Therefore, before purchase, it is necessary to accurately measure the dimensions of the parts where the centrifugal fan is assembled and take notes. When purchasing a negative pressure fan, the salesman can be informed of the size of the installation position, and the appropriate negative pressure fan can be selected according to the salesman's proposal.

　　Select according to your own expense budget

　　All goods are priced, so is the negative pressure fan. It goes without saying that the counterfeit negative pressure fans of fake and shoddy products depend on the negative pressure fans of famous brands in large-scale factories. Because the materials, processing technology, specifications and models, equipment, etc. are different, the price of negative pressure fans is also different. Generally speaking, the cost of anti-corrosion negative pressure fan is higher than that of galvanized sheet metal negative pressure fan; For the negative pressure fans of the same style series, the prices of large-scale models are more expensive than those of small-scale models; The price of negative pressure fan with direct drive motor transmission is higher than that with belt transmission. If there is sufficient cost budget, choose 304 stainless steel plate negative pressure fan. After all, 304 stainless steel plate negative pressure fan is more durable than galvanized plate negative pressure fan. If the current assets are not sufficient, we will choose the galvanized sheet negative pressure fan. To put it simply, those with sufficient cost budgets should be selected, and those with low prices should be selected for those with insufficient funds.

　　Select according to service life

　　When the negative pressure fan is assembled outdoors, it is often exposed to the sun and rain, resulting in a service life. The frame of the galvanized sheet metal negative pressure fan will be corroded after being used for a period of time, which is generally available for three to five years. Glass fiber reinforced plastic anti-corrosion and 304 stainless steel plate negative pressure fans are made of corrosion-resistant raw materials. The frame will never rot and rust. The non-human damage can be used for about 30 years. If it is to be used for a long time, the FRP anti-corrosion or 304 stainless steel plate anti-corrosion pressure fan shall be selected.

　　Select according to the maintenance difficulty

　　All kinds of household appliances and industrial equipment have the condition of maintenance, and it is difficult to avoid this problem when the negative pressure fan is used. Basically, the glass fiber reinforced plastic negative pressure fan uses the motor to immediately drive the fan blades to rotate to cause exhaust. During use, maintenance is to clean up dirt and dust, which is very easy. The negative pressure fan made of galvanized sheet metal materials basically uses a motor to drive the fan blades to rotate according to the belt pulley, resulting in exhaust. After a period of application, the drive belt is aging and damaged, so the belt must be replaced frequently. The maintenance is inconvenient, and the cost of maintenance is also higher than that of FRP negative pressure fan.

　　Select according to exhaust air volume and actual effect

　　Under the condition of the same specification, model and size, and the same motor energy consumption, the exhaust air volume of FRP negative pressure fan is basically larger than that of galvanized sheet metal negative pressure fan, because the motor quality and fan blade exhaust angle of FRP negative pressure fan are higher than that of galvanized sheet metal negative pressure fan. The motors of general FRP anti-corrosion negative pressure fans are pure copper wire cold-rolled steel sheet motors with high torque above level 10, and the negative pressure fans of galvanized sheet metal materials are basically General Motors with level 4 above and below.

　　The above suggestions on the selection of negative pressure fan are only for your reference! Ruizhe environmental protection specializes in producing and selling all kinds of positive pressure and negative pressure fans, roots fans and submerged fans!