Machine-made sand production line

Abstract

The invention discloses a machine-made sand production line which comprises a feeding system, a shaftless roller screening system, a ball milling system, a sand washing system and a concentration and purification system which are sequentially arranged along the production process, wherein the feeding system comprises a screening device used for direct screening after direct discharging, a material receiving bin used for storing screened large materials, a buffer bin used for buffering screened small materials and a circulating conveying assembly used for correspondingly conveying the large materials and the small materials onto the machining production line, and a high-pressure water tube is arranged in the middle of a screen drum of the shaftless roller screening system; materials enter a sand washing system after being ground by the ball milling system; the sand washing system comprises multiple stages of first-stage sand washing boxes, second-stage sand washing boxes and third-stage sand washing boxes which are arranged in parallel, and the materials subjected to sand washing are conveyed to the concentration and purification system. Manual participation is not needed in the production process of the whole sand making production line, so that the labor intensity of workers is reduced, operation is easy, time and labor are saved, and the requirements for batch machine-made sand production and machining are met.

Description

Technical field: [0001] The invention relates to the field of machine-made sand production and processing, and mainly relates to a machine-made sand production line. Background technique: [0002] Manufactured sand refers to sand processed by sand making machines and other auxiliary equipment. The finished product is more regular and can be processed into sand of different rules and sizes according to different process requirements, which can better meet daily needs and achieve reasonable utilization of waste. However, in Machine-made sand requires professional equipment and good production methods to produce qualified and suitable sand and gravel. [0003] The sand making process mainly includes: firstly, it enters the screening system from the feeding system, and then passes through the ball milling system, cleaning system and concentration and purification system in turn. The processes are similar, but the equipment or measures used in each process are different. Sand-ma...

AI Technical Summary

Problems solved by technology

[0004] (1), when the waste material comes first, in the prior art, a large amount of waste material is first unloaded to an agreed position, and when it needs to be processed, it is then screened. Due to the different specifications of the incoming material, When screening a large number of push materials, because some materials are relatively large, an auxiliary material grabbing mechanism or manual assistance is required to remove the relatively large materials first, and then sieve the similar materials. After sieving Then they will be processed separately, and then transported to the corresponding sand production line. In the process, the operation is cumbersome, the labor intensity is high, and a relatively large storage space for auxiliary storage materials and corresponding grabbing equipment are required, which increases manual labor. Cost and equipment cost, and after screening, it is necessary to receive and store materials, which is very cumbersome, which affects the work efficiency of the batch processing and production of machine-made sand, increases the cost of diversion, and affects the production efficiency.

[0005] (2), the existing structure of the screen is fixed on the outside of the fixed frame, the fixing performance of the screen is poor, it is easy to deform or break away from the fixed frame after long-term use, the drive is respectively driven by the rotating shaft in the middle, the driving operation is troublesome, and the middle part is driven The power required is relatively large, and when the material is sieved in the sieve cylinder, it passes through the process of sieving while rotating. After the material is fed, it first passes through the sieve cylinder at the feed end, and the effect of the material advancing in the sieve cylinder is poor. Poor, which affects the continuous feeding, the high-pressure water pipe equipped in the parallel screening process is located above, and its cleaning effect is poor during screening, and it enters the ball mill system after screening

[0006] (3), the structure of existing existing ball mill is simple, although what its feeding and discharging method adopts also is that one end feeds and the other end discharges, but its feeding method is not the same, feeds through feeding hopper The material feeding is intermittent, which affects the feeding effect. The material is discharged from the other end, which is relatively slow and low in efficiency. In addition, the ball mill cylinder must be tilted a large for the convenience of discharging. The angle of the point, which will make the material travel too fast in the barrel of the ball mill, thus affecting the ball milling effect. After the ball milling, it enters the sand washing system. The existing sand washing machine has a simple structure, although it has sand washing function, but the time from feeding to discharging the sand is very short, sometimes it is just soaked in water, and then it is discharged through the wheel-bucket sand washing wheel, the sand washing effect is poor, and it cannot meet the requirements of high-precision sand making. After washing the sand, it enters the concentrated purification system

[0007] (4) The structure of the existing thickening equipment is simple. Most of them divert the sand washing water with residual sand into the barrel of the thickener, and then sink according to the weight of the sand, and the upper layer is sludge water. , in order to ensure its purification and purification effect, it needs to stand for a long time. Although it has a concentrated structure, its concentration effect is poor and its work efficiency is low. Therefore, in order to meet the requirements of batch machine-made sand production and processing, it is necessary to Concentration equipment is improved

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