Long-distance and constant-temperature conveying pipe of fire retardant for plastic granulating

Abstract

The invention relates to the technical field of flame retardant delivery pipelines, in particular to a long-distance constant-temperature delivery pipe for flame retardants for plastic granulation, including a pipe body, flanges are provided at both ends of the pipe body, and it is characterized in that: The pipe body includes an inner pipe and an outer pipe sleeved outside the inner pipe. The outer wall of the inner pipe is provided with a plurality of A grooves along the axial direction of the inner pipe, and the inner wall of the outer pipe is provided with a plurality of A grooves along the axial direction of the outer pipe. There is a one-to-one correspondence with the B grooves, and the A grooves cooperate with the B grooves to form a circulation channel for the heating medium to circulate. By setting the tube body as an inner tube and an outer tube, and cooperating between them to form a circulation channel, when the constant temperature heating medium circulates in the circulation channel, it provides a constant temperature heat source for the flame retardant circulating in the inner tube, thereby ensuring the flame retardancy in the tube body The flow rate of the flame retardant is consistent, and it is convenient to control the amount of the flame retardant when it enters the reactor. At the same time, the device has a simple structure and low cost, and has a good market prospect.

Description

technical field [0001] The invention relates to the technical field of flame retardant delivery pipes, in particular to a long-distance constant-temperature delivery pipe for flame retardants for plastic granulation. Background technique [0002] When the flame retardant for plastic granulation is used, it needs to be transported to the reactor through the pipeline, and sent to the reactor in a liquid state for reaction. Flame retardants for plastic granulation have different viscosities and flow speeds at different temperatures. In order to ensure that the amount of flame retardant added in each reaction is consistent, it is necessary to heat the flame retardant at a constant temperature to keep the viscosity of each part as consistent as possible, so that it is easy to control the same amount of flame retardant added to the reactor. Existing pipelines cannot guarantee the constant temperature delivery of the flame retardant for plastic granulation, thus failing to meet th...

AI Technical Summary

Problems solved by technology

Existing pipelines cannot guarantee the constant temperature delivery of flame retardants for plastic granulation, thus failing to meet the requirements for the amount of flame retardants used in the reaction

Images