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Preheating and precooling integrated device for concrete aggregate

A concrete aggregate and driving device technology, applied in clay preparation devices, cement mixing devices, chemical instruments and methods, etc., can solve problems such as low heating efficiency, restricting the efficiency of heating concrete in mixing buildings, and easy damage to steam pipes, etc. Achieve high preheating and precooling efficiency, improve preheating effect, and save construction time

Inactive Publication Date: 2017-12-15
李小强
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  • Application Information

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Problems solved by technology

[0003] The traditional method is to use special refrigeration equipment to air-cool the aggregates. There is no heating equipment. The only way to heat the aggregates is to install steam pipes in the mixing tank to heat the aggregates. The heating efficiency of this method is low, and the steam pipe is easy to damage, which seriously restricts the work efficiency of the heating concrete in the mixing plant

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  • Preheating and precooling integrated device for concrete aggregate
  • Preheating and precooling integrated device for concrete aggregate
  • Preheating and precooling integrated device for concrete aggregate

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Embodiment Construction

[0017] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0018] see Figure 1-3 , an integrated device for preheating and precooling concrete aggregates, comprising a mixing drum 1, a first hollow rotating shaft 2 is arranged laterally on the inner lower side of the mixing drum 1, and a second hollow rotating shaft is arranged laterally on the inner lower side of the mixing drum 1. Rotating shaft 5, the first hollow rotating shaft 2 and the surface of the second hollow rotating shaft 5 are respectively fixedly connected with the first pushing screw blade 3 and the second pushing screw blade 6, the first pushing screw blade 3 and the second pushing screw blade The spiral direction of the material screw blade 6 is opposite, and the first hollow shaft 2 and the second hollow shaft 5 are respectively connected to the side wall of the mixing drum 1 in rotation, and the left side of the mixing drum 1 is provid...

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Abstract

The invention discloses a preheating and precooling integrated device for concrete aggregate. The falling concrete aggregate makes contact with rising hot gas so that heat can be absorbed by the concrete aggregate. Owing to the fact that communicating pipes are distributed in a radial shape, overflowed hot gas is evenly dispersed, and the situation that the concrete aggregate makes contact with the hot gas is facilitated; the spiral directions of a first pushing spiral blade and a second pushing spiral blade are opposite, thus the concrete aggregate is stirred in a left-right reciprocating mode; in the stirring process, heat of a first hollow rotary shaft and a second hollow rotary shaft is absorbed by the concrete aggregate, and the preheating effect on the concrete aggregate is further improved; and when the concrete aggregate needs to be precooled, a corresponding electromagnetic valve is opened, and then a three-way pipe can communicate with a cooling tank. According to the preheating and precooling integrated device for the concrete aggregate, the concrete aggregate can be selectively preheated and precooled, the preheating and precooling efficiency is high, and the construction time is saved.

Description

technical field [0001] The invention relates to the technical field of concrete construction, in particular to a concrete aggregate preheating and precooling integrated device. Background technique [0002] In the process of constructing large hydraulic structures in the plateau and severe cold regions of our country, the normal construction time of the dam project is restricted due to the short available time for dam concrete pouring under natural conditions. In order to meet the normal construction of concrete under the conditions of low temperature in winter and high temperature in summer, technological measures must be taken to cool or heat the concrete aggregate. [0003] The traditional method is to use special refrigeration equipment to air-cool the aggregates. There is no heating equipment. The only way to heat the aggregates is to install steam pipes in the mixing tank to heat the aggregates. The heating efficiency of this method is Low, and the steam pipe is easil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28C5/14B28C5/08
CPCB28C5/146B28C5/0806B28C5/0831
Inventor 李小强
Owner 李小强
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