Liquid durene conveying and metering mechanism

Abstract

The invention relates to a delivering and metering device of liquid durene, and belongs to the liquid material delivering and metering technology field, wherein the liquid material is liable to be solidified. The delivering and metering device comprises a material melting mechanism, a reservoir matched and connected with the material melting mechanism, a delivery pump configured on the reservoir,an export pipeline connected with the discharge hole of the delivery pump, and a metering mechanism configured on the export pipeline, wherein the delivery pump is a submerged pump, the lower end of which extends into the reservoir, a backflow pipe with a controller is arranged on the export pipeline, and the lower end of the backflow pipe extends into the reservoir, the metering mechanism comprises a controller in series on the export pipeline and flow transmitter controlled by the controller. The material inside the submerged pump can automatically flow into the reservoir, so that the phenomenon of solidification and blockage in the submerged pump cannot occur; only the metering mechanism is kept warm so that damage to the metering mechanism caused by material solidification and blockage in the submerged pump in the prior art can be avoided; and labor intensity of a operator can be relieved.

Description

technical field [0001] The invention belongs to the technical field of conveying and metering of liquid easily solidified materials, and in particular relates to a conveying and metering device of liquid durene. Background technique [0002] As far as the current technical means are concerned, there is no confusion or technical difficulty in the transportation and measurement of conventional liquid materials that are not easy to solidify. However, there are certain technical obstacles in the transportation and measurement of liquid materials that are easy to solidify. Liquid durene Conveying and metering is an example. The liquid durene melted from solid durene is highly sensitive to temperature. When the temperature is lower than the melting point of 79.8°C, local crystals will be precipitated immediately, and the partial crystallization will soon spread to full solidification crystallization. [0003] figure 2 Shown is the schematic diagram of the conveying and metering ...

AI Technical Summary

Problems solved by technology

However, since the structural parts of the plunger pump are made of iron and the delivery volume of durene is small, environmental factors in low temperature weather will reduce the temperature of the plunger and / or tie rod, which will cause the material in the suction chamber to solidify, especially When the pump is stopped, the material in the pump cannot be released, and the pump will be completely blocked after the temperature drops, and it needs to be heated and melted by steam to eliminate it when it is restarted.

At present, the metering mechanism for on-line metering of durene is using a glass rotameter. In order to facilitate inspection, the glass tube in the moving range of the float must be exposed, so that the material is easy to solidify and be damaged (broken) in this area. Glass Rotameter

In addition, once the conveying system (including plunger pump, glass rotameter and pipeline) is blocked by material solidification, it is difficult to determine the specific blockage location, and it needs to be stopped for treatment, which will affect the normal production

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