Building station type production line for simultaneous production of sand and aggregate

Abstract

The invention discloses a building station type production line for simultaneous production of sand and aggregate. The building station type production line is characterized in that double-main machine crushing equipment, two stages of winnowing equipment, a finished sand fineness modulus adjusting and control device, a humidifying machine and dust collecting equipment are arranged in a building station type steel structure framework; the double-main machine crushing equipment is connected with a PLC (programmable logic controller) control system, and comprises a shaping machine, a sand makingmachine and a vibration screening mechanism; the primary winnowing equipment and the secondary winnowing equipment are respectively arranged at material outlets of the shaping machine and the sand making machine, so as to perform two stages of powder removal, effectively control the powder content of sandstone, and improve the quality of finished sandstone; a material outlet of the secondary winnowing equipment is connected with the vibration screening mechanism, and the vibration screening mechanism comprises a vibration sieve and a plurality of material distribution devices. The building station type production line has the advantages that the materials of the production line are graded by the material distribution devices, so as to only produce sand and / or simultaneously discharge sandand stone; the production technology is flexible and diversified, the effect of one machine with multiple functions is realized, the equipment investment is reduced, and the good economic practicality is realized.

Description

technical field [0001] The invention relates to a floor-standing production line capable of simultaneously producing sand and aggregate, and belongs to the technical field of sand-making production equipment. Background technique [0002] At present, in the production of sand and gravel aggregates, the layout of the traditional sand making production line includes plane layout and building station (tower) layout. Among them, the layout method has disadvantages such as large floor area, difficulty in dust removal and environmental protection, poor environmental protection effect, and requires several dust collection systems to collect dust in different areas, and large investment in environmental protection. The building station type (tower type) production system has a compact structure, a small footprint, and saves space, but its equipment configuration is single, and a single crushing main machine is used to make sand, and the shaping and crushing ratio cannot be balanced,...

AI Technical Summary

Problems solved by technology

Among them, the layout method has the disadvantages of large floor area, difficulty in dust removal and environmental protection, poor environmental protection effect, and requires several dust collection systems to collect dust in different areas, and large environmental protection investment.

The building station type (tower type) production system has a compact structure, a small footprint, and saves space, but its equipment configuration is single, and a single crushing main machine is used to make sand, and the shaping and crushing ratio cannot be balanced, so there are the following defects: (1) The processing capacity is low (usually Q≤100t / h in China); (2) The feed particle size requirement is high. If you want to improve the quality of the finished product, you need to take into account sand making and shaping, which leads to the inability to increase the speed and frequency of the main engine, resulting in low output and low energy consumption. High, and the feed size is required to be less than 15mm; (3) The product is single, because the feed size is too small, only sand can be produced, and aggregates (rice stone and crushed stone) cannot be produced at the same time. The production is not flexible and cannot meet customer needs. If Customers need rice stones and crushed stones, which will inevitably increase equipment (production line / system) investment; (4) The fineness modulus cannot be accurately detected and adjusted, resulting in poor quality stability of concrete; (5) The requirements for raw materials are strict and the processing capacity is weak. The proportion of stone powder contained in machine-made sand is not easy to control, and the ultra-fine powder is not easy to remove, resulting in unreasonable gradation of machine-made sand. When the raw material contains high powder or mud content, the cost of dust removal is high; (6) vibrating screen (circular vibrating screen / linear screen) has low processing capacity and low screen penetration rate. When the processing capacity is above 300t / h, it is necessary to increase the number of vibrating screens, resulting in an overly large steel structure (large footprint), and is prone to resonance, reducing the steel structure of the system Stability, increase production investment cost

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