Four principles for the design of pneumatic conveying system: after calculating or distinguishing the material flow type, dilute phase or dense phase pneumatic conveying facilities can be roughly selected, and then the design shall be done according to the following methods and steps:

1、搜集设计有关系的资料除了在之前中介绍的一般需求外，相对于设施设计应主要考虑下列几个点：

1. In addition to the general requirements introduced in the previous section, the following points should be considered relative to the facility design:

(1)对在工厂内部工序相互间的设施，要需注意前后工序间的连接，选取系统的进出料形式；

(1) For the facilities between the internal processes of the factory, pay attention to the connection between the front and rear processes, and select the feeding and discharging form of the system;

(2)要需注意物料的特性和工艺标准，及其基于气力输送所导致的影响；

(2) Attention should be paid to the characteristics and process standards of materials, as well as the impact based on pneumatic conveying;

(3)要需注意环境保护，主要尾气处理和噪声处理。气力输送设计

(3) Attention should be paid to environmental protection, mainly tail gas treatment and noise treatment. Pneumatic conveying design

2、布置输送设施的系统在型号选择以后，便可做好系统的布置。布置时，可按照厂房的设施布置图，前提确立始点的供料器或吸嘴的位置和终点分离器的部位，次之确立空压机和附属设施的部位，再确立空气管和输送管的配置、管件和弯头的数量等。这时候，基于系统各部件、构造、性能等已大概掌捤，所以在布置结束了以后,就能够着手施工图设计了。

2. After the model of the system for arranging the conveying facilities is selected, the system can be arranged well. During the layout, the position of the feeder or suction nozzle at the starting point and the position of the end separator can be determined according to the facility layout of the plant, followed by the position of the air compressor and auxiliary facilities, and then the configuration of air pipes and delivery pipes, the number of pipe fittings and elbows, etc. At this time, the components, structure and performance of the system have been roughly mastered, so the construction drawing design can be started after the layout is completed.

气力输送系统在设计输送方案时通常应遵循哪些原则?

What principles should the pneumatic conveying system follow when designing the conveying scheme?

在布置管路时，需注意减少弯头的数量，在远距离输送时要需注意使每段水平管不于过长。在由室内经过室外的管道要做好保温,不于因温度差异而导致管内壁结露、物料粘壁。在物料输送管上不可安装防碍输送的管件等。

When arranging pipelines, attention should be paid to reducing the number of elbows, and when transporting at a long distance, attention should be paid to making each section of horizontal pipe not too long. The pipes passing indoors and outdoors shall be well insulated to avoid condensation and material sticking on the inner wall of the pipe due to temperature difference. Do not install pipe fittings that hinder the transportation on the material conveying pipe.

3、确立核心部件的型式和结构确立核心部件的型式和结构，可一般 吸送式主要选取吸嘴和分离器,压送式主要选取供料器和分离器。筒式气力输送设施则主要确立收发器，对往返输送的设施还要确立交换站。确立自动控制的形式、程序和路线对一切气力输送设施都是极为重要的，有时候以于是关键性的

3. Establish the type and structure of core components, and establish the type and structure of core components. Generally, the suction type mainly selects suction nozzle and separator, and the pressure type mainly selects feeder and separator. Barrel pneumatic conveying facilities mainly establish transceivers, and exchange stations should be established for round-trip conveying facilities. Establishing the form, procedure and route of automatic control is very important for all pneumatic conveying facilities, and sometimes even critical

4、概略测算装置系统需要的能量测算设施系统时主要先要测算其需要的能量，便于大概地确立压气机械。系统需要的能量为空气量与压力的乘积。空气量可经过主要参量的选取来求出。所以，概略测算的主要任务是粗略地测算设施系统的压损。

4. The approximate energy of the compressor system needs to be calculated first. The energy required by the system is the product of air volume and pressure. The air volume can be calculated through the selection of main parameters. Therefore, the main task of rough calculation is to roughly calculate the pressure loss of facility system.

5、精准测算设施系统的每项数据一般，概略测算是确立设施系统方案时的一类粗略的、简单的测算方式 。因此，当方案确立以后，务必逐项做好精准测算，便于确立系统的所有尺寸。

5. The accurate calculation of each data of the facility system is general, and the rough calculation is a kind of rough and simple calculation method when establishing the facility system scheme. Therefore, after the scheme is established, it is necessary to make accurate calculation item by item, so as to finally establish all dimensions of the system.

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