Environment-friendly efficient sand making machine adopting centrifugal crushing and sand discharging

Abstract

The invention discloses an environment-friendly efficient sand making machine adopting centrifugal crushing and sand discharging. The environment-friendly efficient sand making machine adopting centrifugal crushing and sand discharging comprises a stone crushing and sand making main machine and a machine seat connected to the bottom of the stone crushing and sand making main machine. A crushing cavity is arranged in the stone crushing and sand making main machine. The upper end and the lower end of the stone crushing and sand making main machine are provided with a feed port and a discharge port which communicate with the crushing cavity. A crushing device used for crushing building stone is arranged in the crushing cavity and comprises a crushing rotor assembly and crushing wall plates, wherein the crushing rotor assembly is rotationally connected and installed on the front wall face and the back wall face of the crushing cavity, the crushing wall plates are installed on the left andright inner walls of the crushing cavity, and the horizontal interval between the outer wall of the crushing rotor assembly and the crushing wall plates forms a passage. A material receiving hopper used for containing and receiving sand is connected to the lower end of the discharge port in a sealed manner. The crushing rotor assembly rotates so as to form an airflow which starts from the inside of the crushing cavity, turns along the crushing rotor assembly, passes through the passage and then enters the material receiving hopper, the crushed sand finished products are rapidly discharged outof the crushing cavity, secondary impact on small sand particles meeting the particle size is reduced, and therefore the powder content is reduced.

Description

technical field [0001] The invention relates to the technical field of sand-making equipment, in particular to an environment-friendly centrifugal crushing and sand-discharging high-efficiency sand making machine. Background technique [0002] In order to protect the natural environment and avoid excessive excavation of river channels, the country promotes the use of machine-made sand instead of natural river sand; in order to alleviate the tight supply of sand and gravel materials, the machine-made sand industry and sand-making machinery have been rapidly popularized, but now the traditional sand-making machinery is more commonly used. Sand machinery and simple sand making process are difficult to guarantee the quality of machine-made sand; the finished sand produced by the existing sand making process generally has the defect that the powder content exceeds the standard, and the wet sand making method needs to be washed to remove powder; Powder not only needs to use a lot ...

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Problems solved by technology

[0002] In order to protect the natural environment and avoid over-excavation of river channels, the country promotes the use of machine-made sand instead of natural river sand; in order to alleviate the tight supply of sand and gravel, the machine-made sand industry and sand-making machinery have been rapidly popularized, but now the traditional sand-making machinery is more commonly used. Sand machinery and simple sand making process are difficult to guarantee the quality of machine-made sand; the finished sand produced by the existing sand making process generally has the defect that the powder content exceeds the standard, and the wet sand making method needs to be washed to remove powder; Powder not only needs to use a lot of water resources, but also a large amount of sewage sludge needs to be treated during the powder removal process. Sewage sludge treatment needs to be pumped, precipitated by adding sedimentation agents, dried, cleaned and transported, etc. The equipment investment is large and the daily treatment costs Many, due to the large amount of sewage, the treated sewage is difficult to meet the clean standard, and the sludge powder containing sedimentation agents after treatment has an impact on the environment, and it is difficult to reuse and pile up sludge

[0003] Moreover, in the prior art, sand is produced by dry-type sand-making method. When the dry-type sand-making method is used to make sand, the crushing of stones inside the crusher will generate a lot of dust, and the dust inside the crusher will be lifted outside the crusher, which is harmful to the environment. Cause pollution and affect the health of workers

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