Air Replenishment Regulator, Air Replenishment Device
1. The air supplement regulator is installed on the main coal powder pipeline at the outlet of the injection tank. During the pneumatic conveying process of coal powder, it is used to dilute the high-concentration coal powder from the injection tank, so that the solid-gas mixture is fully and evenly mixed, forming a stable dense-phase solid-gas two-phase flow of coal powder and gas. This equipment has a large gas volume adjustment range and is a key equipment for long-distance dense-phase conveying of coal powder.
2. This equipment has a unique internal design. By adjusting the round nut, the gap of the air supplement passage can be changed, thereby adjusting the air supplement volume and flow rate, and further adjusting the coal injection amount to meet production requirements.
● Technical Parameters:
Applicable medium: Coal powder + nitrogen (or air)
Design temperature (℃): 100
Design pressure (MPa): 1.0, 1.6, 2.5
● External dimensions and connection sizes:
Product Features: In the dense-phase conveying process, the air supplement regulator can adjust the powder flow rate within a large range by adjusting the bypass air supplement volume, and can also destroy the formed material column to achieve long-distance stable conveying. This air supplement device adopts an inner and outer sleeve structure, with coal powder conveyed through the center and secondary air conveyed through the outer ring pipe, forming a jet at a certain angle to mix circumferentially with the central powder. The structure of the air supplement device is divided into adjustable and non-adjustable types. The adjustable air supplement device mainly consists of two sleeves: the inner pipe conveys coal, and the annular gap formed between the outer pipe and the inner pipe conveys supplementary gas. The supplementary gas changes the conveying environment of the coal powder, improving the pneumatic conveying condition of the coal powder pipeline. The non-adjustable air supplement device has a simple structure, is convenient to replace, and has low cost.
A swirl-type air supplement regulator, which belongs to the equipment in the powder pneumatic dense-phase conveying process. Its purpose is to solve the problem of adjustable flow rate and sufficient mixing of powder and gas. The key points of the technical solution to solve this problem are: a gas swirl groove is opened on the inclined surface at the outlet end of the powder inlet pipe of the existing annular gap type air supplement device, there is an arc-shaped concave pit in the groove, and a threaded hole is provided at the powder outlet pipe corresponding to the concave pit. A gas flow adjustment screw with an arc-shaped convex surface matching the concave pit is screwed into the hole.
This air supplement regulator improves the straight cone annular gap air passage into a swirl air passage, making the powder and gas mix more fully and evenly. It can adjust the powder-gas mixing ratio arbitrarily, produce pulsation, greatly improve the conveying capacity, reduce conveying cost, have low failure rate and long service life. In the dense-phase conveying process, by adjusting the bypass air supplement volume, the powder flow rate can be adjusted within a large range, and the formed material column can be destroyed to achieve long-distance stable conveying. This air supplement device adopts an inner and outer sleeve structure, with coal powder conveyed through the center and secondary air conveyed through the outer ring pipe, forming a jet at a certain angle to mix circumferentially with the central powder. It is widely applicable to powder pneumatic conveying and dust removal systems such as blast furnace coal powder injection, power plant fly ash, cement, and dust.
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