Steam injection device

Abstract

The invention discloses a steam injection device which is simple in structure, low in operation cost, and capable of evenly mixing raw materials and replacing a vacuum pump. According to the technical scheme, the steam injection device is characterized in that two pushing boards capable of synchronously shifting front and back are installed on the cross section of an inner cavity of the middle section of the same hopper up and down; spaces are reserved in front of and behind the planes of the upper push board and the lower push board and allow raw materials to pass through therein when raw materials fall down; the two spaces are in an up-and-down closed shape; one side of a steam chamber formed by the two push boards and the front, back, left and right walls of the hopper is provided with a steam inlet pipe through which steam enters continuously. Two half-edge-tooth gears which operate in opposite directions are engaged with and disengaged from racks connected with the rear ends of the pushing boards in turn during operation, so that the upper and lower pushing boards connected into a whole are promoted to synchronously and repeatedly shift front and back, and heated raw materials with air removed by steam fall down to the next working procedure in sequence during shifting.

Description

technical field [0001] The present invention relates to a device for adding water vapor into raw materials, more precisely, more specifically, it is a small-scale mechanical device that injects water vapor into raw materials to improve plasticity and combine more tightly to provide favorable conditions for molding. Background technique [0002] In order to make the loose air-containing raw materials into compact billets or blocks with a certain shape, injecting water vapor into the raw materials is one of the effective methods in the production of bricks and tiles. The principle is that steam The existence of the air will remove the air and make the raw material warm up and improve the plasticity, but there are certain difficulties in adding water vapor to the raw material evenly, that is, it is generally impossible to do so, so it appears that the air in the raw material is drawn out by the operation of the vacuum pump. In order to improve the compactness of raw materials, ...

AI Technical Summary

Problems solved by technology

[0004] Since the inner wall of the stirring tank in operation, the conical sleeve and the helical blade are easy to wear, especially the conical sleeve is subject to the friction of the raw material during the forward movement and the friction with the raw material during the rotation. Once the wear exceeds the limit, it will The channel changes from narrow to wide, which not only increases the amount of material supplied, but also makes it difficult to block the entry of rear air, making the vacuum chamber useless; at the same time, the extrusion volume of the lower spiral blade decreases accordingly, and one increase and one decrease will inevitably form raw materials in the vacuum chamber. If it is blocked due to stagnation, the vacuum pump will lose its function due to the blockage of the vacuum chamber, and the door of the vacuum chamber will be squeezed and forced to stop working.

Therefore, there are disadvantages such as large investment, high energy consumption, high operating cost and large amount of maintenance.

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