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、搜集設(shè)計有關(guān)系的資料除了在之前中介紹的一般需求外，相對于設(shè)施設(shè)計應(yīng)主要考慮下列幾個點：

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

(1)對在工廠內(nèi)部工序相互間的設(shè)施，要需注意前后工序間的連接，選取系統(tǒng)的進(jìn)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藝標(biāo)準(zhǔn)，及其基于氣力輸送所導(dǎo)致的影響；

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

(3)要需注意環(huán)境保護(hù)，主要尾氣處理和噪聲處理。氣力輸送設(shè)計

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

2、布置輸送設(shè)施的系統(tǒng)在型號選擇以后，便可做好系統(tǒng)的布置。布置時，可按照廠房的設(shè)施布置圖，前提確立始點的供料器或吸嘴的位置和終點分離器的部位，次之確立空壓機和附屬設(shè)施的部位，再確立空氣管和輸送管的配置、管件和彎頭的數(shù)量等。這時候，基于系統(tǒng)各部件、構(gòu)造、性能等已大概掌捤，所以在布置結(jié)束了以后,就能夠著手施工圖設(shè)計了。

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.

氣力輸送系統(tǒng)在設(shè)計輸送方案時通常應(yīng)遵循哪些原則?

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

在布置管路時，需注意減少彎頭的數(shù)量，在遠(yuǎn)距離輸送時要需注意使每段水平管不于過長。在由室內(nèi)經(jīng)過室外的管道要做好保溫,不于因溫度差異而導(dǎo)致管內(nèi)壁結(jié)露、物料粘壁。在物料輸送管上不可安裝防礙輸送的管件等。

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、確立核心部件的型式和結(jié)構(gòu)確立核心部件的型式和結(jié)構(gòu)，可一般 吸送式主要選取吸嘴和分離器,壓送式主要選取供料器和分離器。筒式氣力輸送設(shè)施則主要確立收發(fā)器，對往返輸送的設(shè)施還要確立交換站。確立自動控制的形式、程序和路線對一切氣力輸送設(shè)施都是極為重要的，有時候以于是關(guān)鍵性的

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、概略測算裝置系統(tǒng)需要的能量測算設(shè)施系統(tǒng)時主要先要測算其需要的能量，便于大概地確立壓氣機械。系統(tǒng)需要的能量為空氣量與壓力的乘積?？諝饬靠山?jīng)過主要參量的選取來求出。所以，概略測算的主要任務(wù)是粗略地測算設(shè)施系統(tǒng)的壓損。

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、精準(zhǔn)測算設(shè)施系統(tǒng)的每項數(shù)據(jù)一般，概略測算是確立設(shè)施系統(tǒng)方案時的一類粗略的、簡單的測算方式 。因此，當(dāng)方案確立以后，務(wù)必逐項做好精準(zhǔn)測算，便于確立系統(tǒng)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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