WO2016070404A1

WO2016070404A1 - Machine-made sand preparation system

Info

Publication number: WO2016070404A1
Application number: PCT/CN2014/090564
Authority: WO
Inventors: 彭龙喜
Original assignee: 泰州市腾达建筑工程机械有限公司
Priority date: 2014-11-05
Filing date: 2014-11-07
Publication date: 2016-05-12
Also published as: CN104326690A

Abstract

A machine-made sand preparation system, wherein the system comprises a feeding system (1); a symmetric integrated crushing system (4) is connected with the feeding system (1); a sieving system (5) is arranged at the lower end of the symmetric integrated crushing system (4); a powder taking system (6) is in communication with the symmetric integrated crushing system (4) through a conveying passage (7); a powder discharging hole (8) is arranged at the lower end of the powder taking system (6); an air blower (9) is arranged on one side of the powder taking system (6); a humidifying system (10) is arranged at the lower end of the sieving system (5); a backup dry-mixed mortar sand discharging hole (11) is also arranged between the humidifying system (10) and the sieving system (5); a discharging belt conveyor (12) is arranged at one end of the humidifying system (10), the discharging belt conveyor (12) is used for stacking the materials into finished products; a returning system (13) is in communication with the sieving system (5); and a returning pipeline (14) is connected with a feed hopper lifter (3). The separation of stone and powder is achieved, the kinetic energy needed by the system is reduced, the produced finished products are stable in grading, good in grain form and adjustable in fineness and modulus, the requirements on the production of high-performance concrete and dry-mixed mortar are satisfied, comprehensive areas of performance such as durability and strength of the concrete are improved, and the drying procedure and costs of the dry-mixed mortar sand are saved.

Description

Mechanism sand preparation system

Technical field

The invention relates to the field of preparation of building materials, in particular to a preparation device for concrete machine sand.

Background technique

At present, the preparation process of the traditional mechanism sand production is to feed the raw materials into a vertical sand making machine, a counter crusher or an impact crusher through a loader, and then crushed and transported to a vibrating screen through a belt conveyor. The material that does not meet the particle size is again transported to the crusher by another belt conveyor and then broken again. The material with the qualified particle size is separated by the separator to separate the sand and the stone powder. The whole process can be made into the mechanism sand, but the crushing system is single, the whole system The tandem method is used to expose the whole environment to the atmosphere, which is easy to cause environmental pollution. The entire production line covers a large area, consumes a large amount of energy, costs a large amount, and is used in a single way. It cannot be broken in river sand, especially in gravel fields and mountains. Production makes it difficult to promote and use.

Summary of the invention

The technical problem to be solved by the invention is to provide a preparation system for preparing sand-stable stable and granular good mechanism sand by crushing, milling and stone-rocking, which has high production efficiency, compact structure and good sealing performance. .

In order to solve the above technical problems, the following technical solutions are implemented:

A mechanism sand preparation system, comprising: a feeding system; the feeding system is composed of a feeding belt conveyor and a feeding bucket elevator; a symmetric integrated crushing system, the symmetric integrated crushing system is composed of a vertical lifting machine The crushing machine, the powder removing device and the graded vibrating screen are composed of the symmetric integrated crushing system connected to the feeding system; the screening system, the screening system is arranged at the lower end of the symmetric integrated crushing system, and is integrated with the symmetrical integrated crushing The system is fixedly connected; the powder taking system is connected to the symmetric integrated crushing system through the conveying passage, the powder discharging system is provided at the lower end of the powder collecting system, and the blower is arranged on one side of the powder collecting system;

a humidification system, the humidification system is disposed at a lower end of the screening system, and a sand discharge port for the spare dry mortar is disposed between the humidification system and the screening system, and a discharge belt conveyor is disposed at one end of the humidification system. The discharge belt conveyor stacks the finished product; the returning system, the returning system is in communication with the screening system, the returning system is composed of a returning pipeline and a powder discharging device, the returning pipeline and the feeding hopper Lift the machine to connect.

Further, the mechanism sand preparation system further includes a hoist disposed on a side of the symmetric integrated crushing system, the screening system, and the humidifying system.

Further, the feeding system, the symmetric integrated crushing system, the screening system, the humidifying system and the returning system are sequentially fixed by a bracket to form a mechanism sand preparation system.

Further, the powder discharging port, the spare dry mixed mortar sand discharging port and the discharging belt conveyor are sequentially arranged from top to bottom.

Further, the symmetric integrated crushing system, the screening system and the powder picking system are fully enclosed structures.

After adopting the above technical solution, the beneficial effects are as follows:

The sand production system adopts the mechanism of hitting, grinding and stone-rocking, and realizes the separation of stone powder, which greatly reduces the kinetic energy required by the system. The finished product grade is stable, the grain shape is good, and the fineness modulus is adjustable. The process adopts separation technology to effectively control the content of stone powder to meet the national standards. The fine sand produced by this process fully meets the needs of high-performance concrete and dry-mixed mortar production. The comprehensive performance of super-he sand, mountain sand, etc. can save costs. Improve the comprehensive performance of concrete durability, strength, etc., and save the drying procedure and cost of dry mixed mortar sand; the production mechanism sand can be used directly, free of water washing, no need to adjust the sand and river sand, is the gravel field, asphalt concrete industry The preferred sand making equipment for the dry mortar industry.

The process is energy-saving and environmentally friendly, the sand type is superior, and the sand type is superior: in the production process, the crushing + grinding + stone stone shaping is integrated, the finished sand grade is stable, the grain shape is good, the basic needle-free sand is basically, and the finished product is a polyhedron close to the class. The sphere, fineness modulus (2.3 ~ 3.0) and grain content (less than 5%) are adjustable, and the performance indicators are in line with the national "construction sand" GB14684-2011 standard.

Green and environmental protection: The system is equipped with advanced powder extraction scheme, and the process environment has no dust pollution; low energy consumption: energy consumption 3kw/t. The processing cost per ton is 60% energy saving compared with similar products at home and abroad, which greatly reduces the cost of sand making; the range of crushing is wide: in addition to normal broken limestone and various types of gravel, it can also be used for crushing tailings, construction waste and other materials (tailing sand taking) The advantages are particularly outstanding); compact structure: only covers 100m2; high degree of automation: the control system is integrated in one operating room, which minimizes the cost of human resources; the stone powder produced by the system: large specific surface area, can be used 100% Concrete production (if active can replace secondary fly ash).

Dry sand making equipment can control the proportion of sand well, so that the proportion of sand with a particle size between 2.36-0.6mm and 0.6-0.15mm increased in concrete and dry-mixed mortar, which greatly meets various concrete and The demand for sand in dry mortar.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view showing the structure of the mechanism sand of the present invention.

2 is a schematic view showing the side view of the mechanism sand of the present invention.

3 is a graph showing the mechanism sand and gradation curve prepared by the present invention.

detailed description

The invention is described in detail below with reference to the accompanying drawings and specific embodiments, which are not to be construed as limiting the invention; as shown in FIG. 1-2, a mechanism sand preparation system includes: the feeding system 1 Belt conveyor 2 and feeding The hopper integrated crushing system 4 is composed of a vertical hoist, a crusher, a powder removing device and a grading vibrating screen, and the symmetrical integrated crushing system 4 is connected with the feeding system 1; the sieving The system 5 is disposed at the lower end of the symmetric integrated crushing system 4 and is fixedly connected with the symmetric integrated crushing system 4; the powder picking system 6 is connected to the symmetric integrated crushing system 4 through the conveying passage 7, and the powder collecting system 6 is provided with powder at the lower end The material discharge port 8 is provided with a blower 9 on the side of the powder collection system 6; the humidification system 10 is disposed at the lower end of the screening system 5, and the humidification system 10 and the screening system 5 are further provided with a spare dry mortar. The sand discharge port 11 is provided with a discharge belt conveyor 12 at one end, the discharge belt conveyor 12 stacks the finished product, and the returning system 13 communicates with the screening system 5, and the returning system 13 It consists of a return line 14 and a powder pumping device 15, which is connected to the feed bucket elevator 3. The mechanism sand preparation system further includes a hoisting machine 16 disposed at one side of the symmetric integrated crushing system 4, the screening system 5, and the humidifying system 10.

The feeding system 1, the symmetric integrated crushing system 4, the screening system 5, the humidifying system 10 and the returning system 13 are sequentially fixed by the bracket 17 to form a mechanism sand preparation system integrally, and the powder discharging port 8 is reserved. The dry mixing mortar is disposed in order from top to bottom with a sand discharge port 11 and a discharge belt conveyor 12, and the symmetric integrated crushing system 4, the screening system 5, and the powder removing system 6 are fully enclosed structures.

Firstly, the raw stone is conveyed to the feeding bucket lifter 3 through a belt conveying device, and the raw material of the stone is pebbles, granite, limestone, etc., the size of the stone is 10-20 cm, the feeding bucket lifter 3 and the integrated crushing The system 4 is connected, and the stone is transported to the integrated crushing system 4 through the feeding bucket lifter 3. The integrated crushing system 4 is provided with powerful stirring, crushing equipment and dust removing equipment, and the dust removing device is a negative pressure powder removing device, which is broken. The equipment is a horizontal crusher. The integrated crushing system is also equipped with a vertical hoist and a graded vibrating screen. The negative pressure powder removing device, the horizontal crusher, the vertical hoist and the grading vibrating screen are integrated into a three-dimensional structure. The crushing system is connected to the integrated controller and controlled by its integrated console. It is easy to operate and easy to master. If it needs high distribution, it can realize industrial computer control and operation monitoring.

The symmetrical integrated crushing system 4 is operated, and the raw materials are fed into the two horizontal crusher through the outlet of the vertical hoisting machine 16, and the raw materials are crushed, crushed, sheared and thrown through the side outlet of the horizontal crusher, and the two raw materials are in the system. High-speed impact collision forms "rock-rock" impact-type crushing and shaping. When the material is fully crushed and dropped to zero, it is dropped to the graded vibrating screen for grading and screening. The discharged material is divided into coarse or fine particles, and the symmetrical integrated crushing At both ends of the system 4, a powder picking system 6 and a screening system 5 are arranged, the fine particles are transported to the powder picking system 6, and the stone powder is discharged for standby; the coarse particles enter the screening system 5, and the particle size is above 40 mm. Adding stone into the feeding system 13 to return the material, and repeating the steps of crushing and screening;

The coarse particles with a diameter of ≤0.6 mm are transported into the humidifying system 10, and the humidifying system 10 is a dust-free and non-polluting device, and the particles are washed with water to become 2.36-0.6 mm and 0.6-0.15 mm mechanical sand fines, and after washing with water, The fine material is directly transported to the finished product pile through the environmentally friendly discharge belt conveyor 12;

In the screening system 5, a part of the fine particles are piped into the sand discharge port 11 for the spare dry mortar, the fine particles are The dry powder is discharged through the spare dry mixed mortar with sand outlet.

The raw material stone feed amount ranges from 60-30t/h, the discharge amount ranges from 42-240t/h, the dust removal material ranges from 18-60t/h, and the integrated crushing system total power range is controlled from 220kw-900kw.

Dry sand making equipment can control the proportion of sand well, so that the proportion of sand with a particle size between 2.36-0.6mm and 0.6-0.15mm is increased in concrete and dry-mixed mortar.

As shown in Fig. 3, when the single screening curve exceeds the 3rd zone to the upper left, it means that the sand is too fine, and the amount of cement slurry required for mixing the concrete is large, which tends to reduce the strength of the concrete and increase the shrinkage. When it is said that the sand is too thick, the prepared concrete, the compatibility of the mixture is not easy to control, and the internal friction is large, and it is not easy to be shaken and formed. The sand in the second zone is moderately sized and the gradation is good. It is the most ideal grading area for the preparation of concrete.

Claims

A mechanism sand preparation system, characterized in that the system comprises:

a feeding system (1); the feeding system (1) consists of a feeding belt conveyor (2) and a feeding bucket elevator (3);

A symmetric integrated crushing system (4) consisting of a vertical hoist, a crusher, a powder removing device and a graded vibrating screen, the symmetric integrated crushing system (4) and the feeding system (1) connection;

a screening system (5), the screening system (5) is disposed at a lower end of the symmetric integrated crushing system (4), and is fixedly connected with the symmetric integrated crushing system (4);

a powder extraction system (6), the powder extraction system (6) is connected to the symmetric integrated crushing system (4) through a conveying passage (7), and a powder discharging port (8) is arranged at a lower end of the powder collecting system (6). The blower system (6) is provided with a blower (9) on one side;

a humidification system (10), the humidification system (10) is disposed at a lower end of the screening system (5), and a sand slurry for the spare dry mortar is disposed between the humidification system (10) and the screening system (5). a mouth (11), one end of the humidifying system (10) is provided with a discharge belt conveyor (12), and the discharge belt conveyor (12) deposits the finished product;

a returning system (13), the returning system (13) is in communication with a screening system (5), the returning system (13) consisting of a returning pipe (14) and a powder discharging device (15) The return pipe (10) is connected to the feed bucket elevator (3).
The machine sand preparation system according to claim 1, characterized in that the mechanism sand preparation system further comprises a hoist (16), the hoist (16) is arranged in a symmetric integrated crushing system (4), screening System (5), humidification system (10) side end.
The mechanism sand preparation system according to claim 1, characterized in that: the feeding system (1), the symmetric integrated crushing system (4), the screening system (5), the humidifying system (10), and the returning system (13) The scaffold (17) is sequentially fixed to form a mechanism sand preparation system.
The mechanism sand preparation system according to claim 1, characterized in that: the powder discharge port (8), the spare dry mixed mortar sand discharge port (11) and the discharge belt conveyor (12) from the top to the bottom Set down in order.
The machine sand preparation system according to claim 1, characterized in that the symmetric integrated crushing system (4), the screening system (5) and the powder take-up system (6) are fully enclosed structures.
The mechanism sand preparation system according to claim 1, characterized in that: the integrated crushing system (1) is provided with an integrated controller (18) at one end, and is controlled by the integrated console operation for industrial computer control. And running monitoring.