Hefei Hengcheng Industrial Equipment Technology Co., Ltd
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Large Conveying Capacity Pneumatic Conveying Pump Equipment For Cement Silo
Product Introduction:
Principle of PCD type positive pressure dense phase pneumatic conveying silo pump
There are two unloading methods for silo pumps, with bottom discharge being the most commonly used method. The materials in the tank are fluidized through a conical inflatable tank, nozzle jet, or other methods; Setting a fluidized inflation plate (layer) at the bottom can allow the material to be discharged from the upper part of the tank. The distribution of transported gas on different input planes in the tank depends on the properties of the transported material.
The silo pump conveying is a discontinuous conveying process. This figure shows a standard silo pump with inlet and outlet valves, material delivery pipelines, air input pipelines, and a silo. Before the feeding of the silo pump, the silo is filled with the conveyed material, and all valves are closed. The entire working process is as follows:
(1) Open the feed valve and exhaust valve, and the bin pump will feed at atmospheric pressure until the horizontal level gauge sends a signal indicating the full bin;
(2) Close the feed valve and exhaust valve, and then open the high-pressure air valve to pressurize the tank;
(3) When the operating pressure is reached, open the delivery air valve and discharge valve, and the material begins to be delivered;
(4) The conveying end is displayed by the pressure switch, level gauge, or time relay. At this point, close the high-pressure air valve and discharge valve, so that all compressed air is used to clean the conveying pipeline; Simultaneously open the exhaust valve to reduce the pressure inside the tank to normal pressure.
After one work cycle is completed, the other cycle continues.
The working principle of the electric gate valve is to receive control commands and electrically open the gate valve for ash discharge.
Main characteristics of PCD type positive pressure dense phase pneumatic conveying silo pump
① Large conveying capacity: ＞ 300t/h;
② Long distance: ＞ 2000m;
③ Low power consumption: ＜ 3.8kWh/t · km;
④ Low wear and tear: pipeline life>10 years;
⑤ Low speed: initial speed 6-10m/s;
⑥ High mixing ratio: ＞ 30kg/kg;
⑦ Flexible process layout, dust-free, high operation rate, lower investment compared to mechanical conveying, and lower maintenance costs
Application Area
PCD pneumatic conveying equipment and systems have been widely used in industries such as building materials, chemicals, mining, power, and metallurgy. The conveying materials include cement, raw materials, fly ash, hydrated lime, dry discharged calcium carbide slag, slag powder, steel slag powder, coal powder, aluminum oxide powder, bauxite powder, phosphorus powder, pyrophyllite powder, and organic silicon powder.
Large Capacity Pneumatic Conveying Bin Pump Parameter Table
| Conveying Material | Bulk Density (t/m3) | Model | PCD24/H | PCD26/H | PCD28/H | PCD30/H | Conveying Distance | |
| Specification | 16~20m3 | 18~22m3 | 20~27m3 | 26~32m3 | Level (m) | Level (m) | ||
| Pulverized Coal | 0.5 | Delivery Volume (t/h) | 50~80 | 60~90 | 65~110 | 80~130 | 200 | 20 |
| Fly Ash | 0.75 | 75~125 | 85~130 | 95~160 | 125~190 | 200 | 20 | |
| Limestone Powder/Mineral Powder | 0.8 | 80~130 | 90~140 | 100~170 | 130~200 | 200 | 20 | |
| Cement/Raw Meal | 1 | 100~150 | 115~175 | 130~215 | 165~260 | 200 | 20 | |
Long-distance Pneumatic Conveying Bin Pump Parameter Table
| Conveying Material | Bulk Density (t/m3) | Model | PCD24/L | PCD26/L | PCD28/L | PCD30/L | Conveying Distance | |
| Specification | 16~20m3 | 18~22m3 | 20~27m3 | 26~32m3 | Level (m) | Level (m) | ||
| Pulverized Coal | 0.5 | Delivery Volume (t/h) | 20~40 | 25~45 | 30~55 | 45~65 | 1000 | 25 |
| Fly Ash | 0.75 | 35~60 | 45~65 | 45~80 | 65~95 | 1000 | 25 | |
| Limestone Powder/Mineral Powder | 0.8 | 40~65 | 45~70 | 50~85 | 70~100 | 1000 | 25 | |
| Cement/Raw Meal | 1 | 50~80 | 55~90 | 65~110 | 90~120 | 1000 | 25 | |
Conventional Grid Pneumatic Conveying Bin Pump Parameter Table
| Conveying Material | Bulk Density(t/m3) | Model | PCD18/N | PCD20/N | PCD20/N | Reference Conveying Distance | |
| Specification | 5.0~6.7m3 | 7.0~10.0m3 | 10.0~15.0m3 | Level (m) | Vertical (m) | ||
| Pulverized Coal | 0.5 | Delivery Volume (t/h) | 12~20 | 16~32 | 25~50 | 500 | 30 |
| Fly Ash | 0.75 | 18~32 | 25~48 | 35~70 | 50 | ||
| Limestone Powder/Mineral Powder | 0.8 | 20~35 | 26~51 | 38~75 | 500 | 30 | |
| Cement/Raw Meal | 1.0 | 24~42 | 32~65 | 48~95 | 500 | 30 | |
| Silicon Powder | 1.2 | 28~50 | 40~75 | 55~115 | 500 | 30 | |
Parameter Table Of Small Size Pneumatic Conveying Bunker Pump
| Material | Bulk Density(t/m3) | Model | PCD08/M | PCD10/M | PCD12/M | PCD14/M | Reference Conveying Distance | |
| Specification | 0.2~0.5m3 | 0.6~1.6m3 | 1.5~2.5m3 | 2.5~5.0m3 | Level (m) | Vertical (m) | ||
| Pulverized Coal | 0.5 | Delivery Volume (t/h) | 0.5~1.8 | 1.5~5.5 | 5.0~9.0 | 8.0~18.0 | 100 | 20 |
| Fly Ash | 0.75 | 0.9~2.8 | 2.5~8.5 | 7.0~14.0 | 12.0~27.0 | 100 | 20 | |
| Limestone Powder/Mineral Powder | 0.8 | 1.0~3.0 | 3.0~9.0 | 8.0~15.0 | 12.0~28.0 | 100 | 20 | |
| Cement/Raw Meal | 1.0 | 1.2~3.5 | 3.5~11.5 | 10.0~18.0 | 16.0~36.0 | 100 | 20 | |
| Silicon Powder | 1.2 | 1.5~4.0 | 4.5~13.5 | 12.0~20.0 | 19.0~43.0 | 100 | 20 | |