山东螺杆式风机的全面介绍

山东螺杆式风机发展较晚，是一种新型的回转式风机，分为单螺杆与双螺杆式，市场上常见的为双螺杆式。双螺杆结构由瑞典人里斯曼发明，先用于压缩机领域，到20世纪末，双螺杆结构在鼓风机领域才开始获得较快发展，并在诸多应用领域展现里良好的易用性，如节能、稳定等。凭借良好的性能，在较多领域开始逐渐替代传统风机。

Screw fan is a new type of rotary fan, which can be divided into single screw type and double screw type. The common type in the market is twin-screw type. The twin-screw structure was invented by Riesman of Sweden and was first used in the field of compressor. By the end of the 20th century, the twin-screw structure began to obtain rapid development in the field of blower, and showed good ease of use in many application fields, such as energy saving, stability, etc. With good performance, it has gradually replaced the traditional fan in many fields.

一、螺杆风机的结构

1、 Structure of screw fan

以锦工双螺杆鼓风机为例，螺杆风机一般主要由外罩、主机、电机、空气过滤器、消音器、油泵油箱以及油虑等部分构成。锦工双螺杆鼓风机可根据客户要求进行定制，比如去掉外罩、改为无油系统等。

Taking Jingong twin-screw blower as an example, screw fan is generally composed of cover, main engine, motor, air filter, muffler, oil pump tank and oil filter. Jingong twin-screw blower can be customized according to customer requirements, such as removing the cover, changing to oil-free system, etc.

锦工螺杆鼓风机结构

Structure of screw blower in Jingong

螺杆主机作为螺杆风机的核心部件，其结构直接决定了风机性能的优劣。螺杆主机主要由机壳、螺杆转子、齿轮箱、轴承、轴封等主要部件构成。

As the core component of screw fan, the structure of screw host directly determines the performance of the fan. Screw host is mainly composed of casing, screw rotor, gearbox, bearing, shaft seal and other main components.

二、螺杆风机的运行原理

2、 Operation principle of screw fan

螺杆式风机的运行原理是两根平行的阴阳转子在“∞”形气缸中相互啮合形成工作容积，通过同步齿轮，转子作反向高速转动，随着转子转动工作容积的大小发生周期性的变化，在气体输送过程中同时实现气体的压缩。螺杆式风机的工作循环可分为吸气、压缩和排气三个过程。其循环过程如下所示：

The operation principle of screw fan is that two parallel male and female rotors mesh with each other in the "∞" cylinder to form the working volume. Through synchronous gears, the rotor rotates in reverse high speed. With the rotor rotation, the working volume changes periodically, and the gas compression is realized in the process of gas transmission. The working cycle of screw fan can be divided into three processes: suction, compression and exhaust. The cycle process is as follows:

1、吸气过程

1. Inspiratory process

气体经吸气口进入转子齿间容积，随着转子的转动，齿间容积不断扩大，当齿间容积达到最大时，齿间容积与吸气口断开，吸气过程结束。

The gas enters into the inter tooth volume of the rotor through the suction port. With the rotation of the rotor, the volume between teeth expands continuously. When the volume between teeth reaches the maximum, the volume between teeth is disconnected from the suction port, and the suction process is finished.

3、排气过程

3. Exhaust process

齿间容积与排气口连通后，排气过程开始。转子转动过程中，齿间容积不断减小，将压缩后的气体送至排气管。此过程一直延续到该容积达

After the volume between teeth is connected with the exhaust port, the exhaust process begins. During the rotation of the rotor, the volume between the teeth decreases continuously, and the compressed gas is sent to the exhaust pipe. This process continues until the volume reaches

三、螺杆式风机的特点

3、 Characteristics of screw fan

螺杆式风机在腔体内气体输送的过程中实现了内压缩，因此螺杆拥有罗茨大部分的优点之外，同时比罗茨具备更高的效率，且气体的输送压缩的过程是连续渐进的，气流脉动更低，排气噪音、温度控制等均要优于罗茨等传统风机。

Screw fan realizes internal compression in the process of gas transportation in the cavity, so screw has most of the advantages of roots, and has higher efficiency than roots. Moreover, the process of gas transportation and compression is continuous and gradual, with lower flow pulsation, better exhaust noise and temperature control than roots and other traditional fans.

作为近年来新兴发展的回转式鼓风机种类，螺杆风机因其结构简单，稳定、节能低噪音等优势，开始普遍出现在曝气、气水反冲、氧化脱硫、流化/均化工艺、气力输送等应用中，并将会成为各个行业风机选择亮点。

As a new type of rotary blower in recent years, screw fan has been widely used in aeration, gas water backwash, oxidation desulfurization, fluidization / homogenization process, pneumatic conveying and other applications due to its simple structure, stability, energy saving and low noise, and will become the highlight of fan selection in various industries.