Characteristics of positive pressure and negative pressure pneumatic conveying equipment

气力输送基本的形式包括正压气力输送与负压气力输送，具体的又可分为吸送式、压送式、吸送压送组合式、密相脉冲式以及空气输送斜槽式。

The basic forms of pneumatic conveying include positive pressure pneumatic conveying and negative pressure pneumatic conveying. Specifically, it can be divided into suction type, pressure type, combined suction and pressure type, dense phase pulse type and air conveying chute type.

一、正压气力输送

1、 Positive pressure pneumatic conveying

正压输送，顾名思义，是用输送系统起点的气力输送风机，将高于大气压的的压缩空气送入输送系统中，定量物料在高速运行的气流的带动下，到达终点，再经过过滤，物料与空气分离。

Positive pressure conveying, as the name implies, is to use the pneumatic conveying fan at the starting point of the conveying system to send the compressed air higher than atmospheric pressure into the conveying system. Under the driving of the high-speed air flow, the quantitative material reaches the end point, and then is filtered to separate the material from the air.

正压气力输送的特点是：

Positive pressure pneumatic conveying is characterized by:

1、适宜从一处向多出进行分散输送；

1. Suitable for dispersing and conveying from one place to more places;

2、适合大容量，长距离输送；

2. Suitable for large capacity and long-distance transportation;

3、供料复杂，卸料简单；

3. Complex feeding and simple unloading;

此外，正压输送还有漏气检查处理方便，气力输送风机磨损较轻等特点。同时正压输送根据风压的不同还有低压（低于50kPa）、中压（50-100kPa）、高压之分（100kPa以上）。

In addition, the positive pressure conveying has the characteristics of convenient air leakage inspection and treatment, and the pneumatic conveying fan is less worn. At the same time, the positive pressure transmission can be divided into low pressure (less than 50kPa), medium pressure (50-100kpa) and high pressure (more than 100KPA) according to the wind pressure.

气力输送

Pneumatic conveying

二、负压气力输送

2、 Negative pressure pneumatic conveying

负压输送，对应的即是利用气力输送风机对输送系统进行抽吸，在系统中形成低于大气压的负压气流，物料与空气一同通过管道进入输送系统并随气流达到终点，然后经过过滤分离。

The negative pressure conveying corresponds to the suction of the conveying system by the pneumatic conveying fan to form a negative pressure air flow below the atmospheric pressure in the system. The materials and air enter the conveying system through the pipeline and reach the end point with the air flow, and then are filtered and separated.

负压气力输送具有以下特点：

Negative pressure pneumatic conveying has the following characteristics:

1、适宜多处向一处集中输送，对于堆积面广、分散的物料及其方便；

1. It is suitable for centralized transportation from multiple places to one place, which is convenient for materials with wide stacking surface and scattered distribution;

2、供料简单，卸料复杂；

2. Simple feeding and complicated unloading;

3、负压吸送，物料不会外泄，也无须担心气力输送风机的油分、水分混入物料；

3. Negative pressure suction, the material will not leak, and there is no need to worry about the oil and water of the pneumatic conveying fan mixing into the material;

4、容量及输送距离不宜过大过长，真空度一般控制在40-50kPa；

4. The capacity and transmission distance should not be too large and too long, and the vacuum degree is generally controlled at 40-50kpa;

5、尾气除尘较为重要，否则易导致气力输送风机故障；

5. Dust removal of tail gas is very important, otherwise it is easy to cause failure of pneumatic conveying fan;

正压输送与负压输送在运用场合上，有着明显的特点差异。企业可根据自身物料特性及生产工艺的装卸特点，选择合适的气力输送方式。确定方式之后再根据物料特性、输送浓度等详细设计输送系统。

There are obvious differences between positive pressure conveying and negative pressure conveying in application. The enterprise can choose the appropriate pneumatic conveying mode according to its own material characteristics and the loading and unloading characteristics of the production process. After the mode is determined, the transport system is designed in detail according to the material characteristics and transport concentration.

以上就是为大家介绍的有关江苏气力输送设备的详细的介绍,希望对您有所帮助.如果您有什么疑问的话,欢迎联系我们.我们将以的态度,为您提供服务http://www.sddyfd.com/

The above is the detailed introduction of Jiangsu pneumatic conveying equipment. I hope it will help you. If you have any questions, please contact us. We will provide you with services with a professional attitude http://www.sddyfd.com/