美國Thermascrew干燥機

THERMASCREW®

Thermascrew®干燥機熱交換間接地通過(guò)一個(gè)的中空螺釘和一個(gè)帶夾套的身體槽。產(chǎn)品是由一個(gè)單一的或雙螺桿的旋轉輸送。停留時(shí)間被控制轉子的速度和范圍從幾分鐘至一小時(shí)。溫柔的螺絲操作處理易碎產(chǎn)品，以^小的顆粒尺寸減少。雙螺桿的設計處理面團狀材料的烹飪和反應過(guò)程。 典型應用THERMASCREW® 間接加熱系統 熱燙 冷 烹飪 冷卻 結晶 烘干 暖氣 混合 蒸發(fā) 脫溶 反應

典型產(chǎn)品 化學(xué)制品 晶體 脂肪 訂閱 魚(yú) 水果和蔬菜 糯米材料 顆粒材料 液體 餐 肉類(lèi)副產(chǎn)品 膏 制藥 粉 果肉材料 鹽 泥漿 固體 淀粉 糖

通常的產(chǎn)品進(jìn)入的一端，由螺桿的旋轉，在其另一端的放電點(diǎn)的移動(dòng)。當它進(jìn)入中空螺釘，軸和護套表面的接觸，熱量被傳遞。 的熱交換介質(zhì)進(jìn)入的旋轉接頭中，通過(guò)中空螺桿移動(dòng)，然后回到再出來(lái)。該介質(zhì)也進(jìn)入護套的產(chǎn)品的出口點(diǎn)附近，在相對端的槽排出。在外套的隔板安排，確保積極的流動(dòng)。 絲杠旋轉速度的控制的產(chǎn)品的保留時(shí)間和排出溫度。短節距螺旋翻滾動(dòng)作，統一，高效的熱交換。

類(lèi)型的設計 有兩種基本的Thermascrew®設計： 輸送機 - 類(lèi)型包括一個(gè)或更慢旋轉空心螺釘安裝在一個(gè)帶夾套的管或波谷。

攪拌釜式空心螺桿轉子安裝在夾套容器。材料內循環(huán)單元，激動(dòng)的旋轉螺絲和溢出停留時(shí)間由進(jìn)給速度和保持。 Thermascrew®間接干燥系統是由碳鋼或不銹鋼，以及其它合金。車(chē)身樣式包括非套的低谷期，一個(gè)夾套低谷，一個(gè)帶護套管槽和槽與多個(gè)螺絲。

可選的蒸汽噴口沿槽允許直接和導電加熱，單位在現場(chǎng)蒸汽加熱，殺菌，蒸煮或熱燙。以及可能被注入吹掃氣體或空氣。

封閉模型隔離空氣中的污染物（粉塵，煙霧，水氣或反應氣體）的產(chǎn)品，并消除有毒灰塵或昂貴的產(chǎn)品，損失。

thermascrews®可能在任一壓力或真空環(huán)境中操作，并可以作為反應器，用于混合液體或氣體反應物與產(chǎn)品?？梢曰厥者^(guò)程中產(chǎn)生的任何氣體。

轉子樣式包括一個(gè)中空的螺桿具有較小直徑比槽的槽和一個(gè)中空的螺桿的直徑相同。與第一類(lèi)，可選的升降機酒吧 - 安裝螺釘航班上 - ，提高攪拌翻滾的產(chǎn)品。與第二樣式，連續色帶或挺桿酒吧 - 安裝外邊緣之間的螺桿的槽的內表面齊平， - 混合產(chǎn)品的更需要更高的旋轉速率，改善熱傳輸系數。

的Thermascrew®間接干燥系統可在7個(gè)槽直徑8“29”和8個(gè)槽的長(cháng)度從4'至30'。

THERMASCREW®

The Thermascrew® Dryer exchanges heat indirectly through a hollow screw and a jacketed body trough. Product is conveyed by the rotation of a single or double screws. Residence time is controlled by the rotor speed and ranges from several minutes to one hour. The gentle screw action handles friable products with minimal particle size reduction. The twin-screw design handles dough-like materials for cooking and reaction processes.  TYPICAL APPLICATIONS OF THERMASCREW® INDIRECT HEATING SYSTEM Blanching Chilling Cooking Cooling Crystallizing Drying Heating Mixing Evaporating Desolventizing Reacting

TYPICAL PRODUCTS Chemicals Crystals Fats Feeds Fish Fruits and Vegetables Glutinous Materials Granular Materials Liquids Meals Meat By-Products Pastes Pharmaceuticals Powders Pulpy Materials Salt Slurries Solids Starch Sugar

The product usually enters one end and moves by screw rotation to the discharge point at the other end. Heat is transferred when it comes into contact with the hollow screw, shaft and jacket surfaces. The heat exchange medium enters at the rotary joint, moves through the hollow screw, and moves back out again. The medium also enters the jacket near the product outlet point, discharging at the opposite end of the trough. A baffle arrangement in the jacket ensures positive flow.   Screw rotation speed controls retention time and discharge temperature of the product. The tumbling action of the short pitch screw makes the heat exchange uniform and efficient.

TYPES OF DESIGN There are two basic Thermascrew® designs: Conveyor - Type consists of one or more slowly rotating hollow screws mounted in a jacketed pipe or trough.

Agitated Vessel- Type consists of hollow screw rotors mounted in a jacketed vessel. Material circulates within the unit, agitated by the rotating screws and overflows with residence time determined by feed rate and hold up. The Thermascrew® indirect drying system is made of carbon or stainless steel as well as other alloys. Body styles include a non-jacketed trough, a jacketed trough, a pipe trough with jacket and a trough with multiple screws.

Optional steam orifices along the trough permit direct as well as conductive heating, making the unit useful in live steam heating, sterilizing, cooking or blanching. Purge gas or air may be injected as well.

Enclosed models isolate the product from airborne contaminants (dust, fumes, water vapor or reactant gases) and eliminate toxic or expensive product dust losses.

Thermascrews® may operate in either a pressure or vacuum environment and can serve as reactors for mixing liquid or gas reactants with the product. Any gases produced during the process can be recovered.

Rotor styles include a hollow screw the same diameter as the trough and a hollow screw with a smaller diameter than the trough. With the first type, optional lifter bars - mounted between screw flights - improve agitation by tumbling the product. With the second style, continuous ribbons or lifter bars - mounted between the outer edge of the screw and flush with the inner surface of the trough - mix the product even more and require higher rotational rates, improving heat-transfer coefficients.

The Thermascrew® indirect drying systems are available in seven trough diameters from 8" to 29" and eight trough lengths from 4' to 30'.