CN222678338U - A high mud content mine mixture machine-made sand production line - Google Patents

Abstract

The utility model discloses a machine-made sand production line for mining mixtures with high mud content, which relates to the technical field of mechanical sand making equipment, and comprises a preliminary washing component, a natural sand washing component, a sand making component, an integrated electric control cabinet 46 and a wastewater collecting and treating device, wherein the natural sand washing component and the sand making component are respectively connected to the output end of the preliminary washing component; the integrated electric control cabinet 46 is arranged beside the production line, and its control line is respectively connected to the preliminary washing component, the natural sand washing component and the sand making component; the wastewater collecting and treating device is arranged beside the production line, and is respectively connected to the preliminary washing component, the natural sand washing component and the sand making component through a sewage pipe 7; the machine-made sand production line for mining mixtures with high mud content has the characteristics of high output, good quality, and the ability to utilize mining mixed raw materials with high mud content, and is suitable for utilizing raw materials with high mud content such as angular gravel and residual mud and slag of building pile foundations to prepare natural sand and machine-made sand respectively.

Description

Mine mixture machine-made sand production line with high mud content

Technical Field

The utility model relates to the technical field of mechanical sand making equipment, in particular to a mine mixture machine-made sand production line with high mud content.

Background

With the continuous development of domestic economy, the scale of domestic basic construction is larger and larger, and river sand is used as an important building material, and the demand of the river sand is also larger and larger. Therefore, the machine-made sand prepared by adopting various nonmetallic ores, mine tailings, industrial waste residues and other raw materials meeting the sand making requirements gradually replaces natural sand.

When the surface soil of the mine is stripped, the produced gravel soil contains raw materials meeting the sand making requirement, but also contains a large amount of impurities such as soil blocks, tree roots and the like, the mud content is up to 50 percent, and also contains a large amount of accumulated coarse sand, gravel, granite and clay in the residual mud residue of the building pile foundation in areas of alluvial plain such as long triangles and bead triangles in China, and the sand content in the residual mud residue excavated by partial pile foundation engineering is even up to more than 70 percent, so that a very favorable natural condition is created for mechanical sand making, but the impurities such as the soil blocks in the mixture are removed, and high-quality sand with the mud content of 3 percent is produced, so that the existing mechanical sand making production line is difficult to win.

A production process and a production system of machine-made sand are disclosed in China patent (patent application number 202011540472.8), and comprise the steps of sequentially carrying out primary crushing, secondary crushing and sand making treatment on a sand-making raw material to obtain a machine-made sand crude product, carrying out air separation on the machine-made sand crude product to obtain medium coarse sand and fine powder sand, wherein the fine powder sand mainly comprises stone powder and mica powder, the grain size of the fine powder sand is less than or equal to 5mm, screening the fine powder sand to obtain oversize products and undersize products, wherein the pore diameter of a screen is 0.3-0.4mm during screening, and uniformly mixing the undersize products obtained in S4 with the medium coarse sand obtained in S3 to obtain a machine-made sand finished product with the mica content of less than or equal to 2%. The invention can effectively control the content of harmful mica in the granite-based mix machine-made sand within the standard allowable range, further improve the frost resistance and durability of the concrete under the same mixing proportion, solve the practical problem of engineering, and has great market popularization and application prospect and economic benefit, and very outstanding environmental benefit.

Another chinese patent (patent application No. 20222074856. X) discloses an "environmental protection machine-made sand production line", and it includes dosing unit, material loading belt feeder, sand making machine, mixed hopper lifting machine, shale shaker, returning charge belt feeder, finished product hopper lifting machine, humidifier, dust remover, air inlet pipeline, air-out pipeline, selection powder machine, finished product belt feeder, the sand making machine passes through material loading belt feeder and is connected with the dosing unit transmission, passes through mixed hopper lifting machine and shale shaker transmission to be connected, and the discharging device of shale shaker carries coarse fodder to the sand making machine through returning charge belt feeder, and the fine material is carried to finished product hopper lifting machine after passing through the selection powder machine and is connected with finished product belt feeder transmission, the dust remover passes through air inlet pipeline and is connected with the main node of dust production, provides dust absorption wind power for the dust remover through the air-out pipeline, adopts dry production technology, mud sewage "zero pollution, zero release.

There is also an "environment-friendly wet aggregate machine-made sand production system" disclosed in chinese patent (patent application No. 201020689531.3), which includes a bin, a vibratory feeder, a coarse crusher, a first transfer bin, a first fine crusher, a second vibrating screen, a spiral sand washer, a sand slurry processor, a second transfer bin, a third vibrating screen, and the like. The method mainly solves the technical problem that the quality of fine aggregate is not too high in the existing mixture production, can efficiently produce fine aggregate with good grading and fineness modulus, and also gives consideration to the environmental protection problem in the production process.

The system and the method for producing the machine-made sand are disclosed in China patent (patent application number 202211614645.5), and are characterized in that a feeding end of the sand making machine is in transmission connection with the batching device through the feeding belt conveyor. The invention has the advantages of less equipment, more than 30% less equipment than the traditional process, reduced labor cost, more than 40% less maintenance personnel, reduced dust and more environment protection.

There is also a "machine-made sand production process and a production system for implementing the production process" disclosed in chinese patent (patent application No. 201710813119.4), the machine-made sand production system includes a sand making machine and a sieving machine, a powder selecting and classifying system for classifying the materials to be classified output from the sand making machine is provided between the sand making machine and the sieving machine, and the powder selecting and classifying system has a material inlet to be classified, a stone powder outlet and a mixture outlet to be sieved communicated with the inlet of the sieving machine. The machine-made sand production process comprises the step of sorting materials to be sorted, which are output by machine-made sand, by utilizing a powder sorting and grading system. The machine-made sand production process and the production system for implementing the production process utilize the powder selecting and classifying system to separate the materials to be separated after being crushed by the sand making machine, remove dust, reduce the load of the screening machine, avoid the dust from blocking the screen when the water content is large, reduce the energy consumption of the crushing system and increase the system yield.

Disclosure of Invention

Aiming at the defects existing in the prior art, the technical problem to be solved by the utility model is to provide equipment which can utilize mine mixed raw materials with high mud content, separate natural sand and prepare machine-made sand at the same time, and has the advantages of high yield, good quality and the like.

In order to solve the technical problems, the technical scheme includes that the mine mixture machine-made sand production line with high mud content is designed and comprises a preliminary washing subassembly, a natural sand washing subassembly, a sand making subassembly, an integrated electric control cabinet 46 and a wastewater collection and treatment device, wherein the natural sand washing subassembly and the sand making subassembly are respectively connected to the output end of the preliminary washing subassembly, the integrated electric control cabinet 46 is arranged beside the production line, a control line of the integrated electric control cabinet is respectively connected with the preliminary washing subassembly, the natural sand washing subassembly and the sand making subassembly, and the wastewater collection and treatment device is arranged beside the production line and is respectively communicated with the preliminary washing subassembly, the natural sand washing subassembly and the sand making subassembly through sewage pipes 7.

The preliminary washing subassembly comprises a chain plate conveying feeder 19, a mudstone separator 21, a preliminary separation flushing component 20, a preliminary separation belt conveyor 23 and a preliminary separation chute 22, wherein the input end of the mudstone separator 21 is arranged at the lower part of the output end of the chain plate conveying feeder 19, the preliminary separation flushing component 20 is arranged at the upper part of the input end of the preliminary separation belt conveyor 23, the input end of the preliminary separation belt conveyor 23 is arranged at the lower part of the output end of the mudstone separator 21, the output end of the preliminary separation belt conveyor is connected with the feeding end of the sand making subassembly, and the preliminary separation chute 22 is arranged at the lower part of the mudstone separator 21, and the output end of the preliminary separation belt conveyor is connected with the feeding end of the natural sand washing subassembly.

A feed hopper 18 and a discharge table 17 are sequentially arranged in front of the input end of the drag conveying feeder 19, and the feed hopper 18 is arranged at the upper part of the input end of the drag conveying feeder 19.

The natural sand washing sub-assembly comprises a rubbing machine 25, a natural sand washing vibrating screen 29, a natural sand washing vibrating screen washing part 28, a natural sand washing belt conveyor 15, a natural sand washing vibrating screen belt conveyor 31, a first spiral sand washing machine 14 and a natural sand washing fine sand recycling integrated machine 9, wherein the input end of the rubbing machine 25 is arranged at the lower part of the output end of the primary separation chute 22, the output end of the rubbing machine is arranged at the upper part of the input end of the natural sand washing belt conveyor 15, the input end of the natural sand washing vibrating screen 29 is arranged at the lower part of the output end of the natural sand washing belt conveyor 15, the natural sand washing vibrating screen washing part 28 is arranged at the upper part of the input end of the natural sand washing vibrating screen washing part, the output end of the natural sand washing vibrating screen belt conveyor 31 is arranged at the lower part of one side of the natural sand washing vibrating screen 29, the output end of the natural sand washing vibrating screen belt conveyor 31 is connected with a sand manufacturing assembly, and the output end of the first spiral sand washing machine 14 is arranged at the upper part of the input end of the natural sand recycling integrated machine 9.

A second spiral sand washer 12 and a second spiral flushing part 13 are also arranged between the output end of the first spiral sand washer 14 and the input end of the natural sand washing and fine sand recycling integrated machine 9, the input end of the second spiral sand washer 12 is arranged at the lower part of the output end of the first spiral sand washer 14, the output end of the second spiral sand washer is arranged at the upper part of the input end of the natural sand washing and fine sand recycling integrated machine 9, and the second spiral flushing part 13 is arranged at the upper part of the second spiral sand washer.

A natural sand wheel type sand washer 10 and a natural sand wheel type sand washer flushing part 11 are also arranged between the output end of the second spiral sand washer 12 and the input end of the natural sand wheel type sand washer 9, the input end of the natural sand wheel type sand washer 10 is arranged at the lower part of the output end of the second spiral sand washer 12, the output end of the natural sand wheel type sand washer 10 is arranged at the upper part of the input end of the natural sand wheel type sand washer 9, and the natural sand wheel type sand washer flushing part 11 is arranged at the upper part of the natural sand wheel type sand washer.

The sand making assembly comprises a jaw crusher 24, a first belt conveyor 26, a cone crusher 27, a second belt conveyor 30, a stone bin 32, a third belt conveyor 33, a stone feed hopper 34, a pair roller sand making machine 35, a fourth belt conveyor 36, a sand making vibrating screen 39, a sand making vibrating screen flushing component 37, a fifth belt conveyor 38, a sand making first wheel type sand washer 45 and a sand making fine sand recycling integrated machine 42; the feed inlet of the jaw crusher 24 is arranged at the lower part of the output end of the primary separation belt conveyor 23, the discharge port of the first belt conveyor 26 is arranged at the upper part of the input end of the first belt conveyor; the feed inlet of the cone crusher 27 is arranged at the lower part of the output end of the first belt conveyor 26, the discharge port of the belt conveyor is arranged at the upper part of the input end of the second belt conveyor 30, and the output ends of the second belt conveyor 30 and the natural sand washing vibrating screen belt conveyor 31 are arranged at the upper part of a stone bin 32; the input end of the third belt conveyor 33 is arranged at the lower part of the output end of the pebble bin 32, the output end of the device is arranged at the upper part of a stone feed hopper 34; the feed inlet of the pair roller sand making machine 35 is arranged at the lower part of the stone feed hopper 34, the discharge port of the device is arranged at the upper part of the input end of the fourth belt conveyor 36; the input end of the sand making vibrating screen 39 is arranged at the lower part of the output end of the fourth belt conveyor 36, the sand making vibrating screen flushing part 37 is disposed at an upper portion thereof, the fifth belt conveyor 38 is disposed at a lower portion of one side thereof, the output end of the fifth belt conveyor 38 is arranged at the upper part of the pebble feed hopper 34, and the output end of the sand making vibrating screen 39 is arranged at the upper part of the input end of the sand making first wheel type sand washer 45; the output end of the sand making first wheel type sand washer 45 is arranged at the upper part of the input end of the sand making fine sand recycling integrated machine 42.

A second sand-making wheel type sand washer 41 and a second sand-making wheel type sand washer 40 are arranged between the first sand-making wheel type sand washer 45 and the fine sand-making recycling integrated machine 42, the input end of the second sand-making wheel type sand washer 41 is arranged at the lower part of the output end of the first sand-making wheel type sand washer 45, the output end of the second sand-making wheel type sand washer is arranged at the upper part of the input end of the fine sand-making recycling integrated machine 42, and the second sand-making wheel type sand washer 40 is arranged at the upper part of the second sand-making wheel type sand washer.

The wastewater collection and treatment device comprises a sewage pipe 7, a sedimentation tank 5, a sedimentation Chi Zha slurry pump 4 and a plate filter press 2, wherein one end of the sewage pipe 7 is communicated with the sedimentation tank 5, the other end of the sewage pipe is respectively communicated with a rubbing machine 25, a first spiral sand washer 14, a second spiral sand washer 12, a natural sand washing wheel type sand washer 10, a natural sand washing fine sand recycling integrated machine 9, a sand making first wheel type sand washer 45, a sand making second wheel type sand washer 41 and a sand making fine sand recycling integrated machine 42, and the sedimentation Chi Zha slurry pump 4 is arranged in the sedimentation tank 5, and the output end of the sedimentation Chi Zha slurry pump 4 is connected with the plate filter press 2.

An efficient thickener 3 and a thickener slurry pump 47 are arranged between the sedimentation tank 5 and the plate filter press 2, the output end of the thickener slurry pump 4 of the sedimentation Chi Zha is connected with the input end of the efficient thickener 3, the input end of the thickener slurry pump 47 is arranged at the output end of the efficient thickener 3, and the output end of the thickener slurry pump 47 is arranged at the input end of the plate filter press 2.

The production line of the machine-made sand of the mine mixture with high mud content comprises a preliminary washing component, a natural sand washing component and a sand making component, when the mine mixture with high mud content is subjected to preliminary separation of the preliminary washing component, the mud mortar containing the natural sand is washed by the natural sand washing component, and further qualified natural sand is separated, and coarse gravel, granite or ore and the like which are preliminarily separated are prepared into qualified machine-made sand by the sand making component, so that the machine-made sand can be prepared by using the mine mixture with high mud content. Meanwhile, as two sets of assemblies are adopted to wash and separate and machine sand respectively, and a plurality of screening and flushing processes are carried out, the production efficiency is higher, the yield of a production line is greatly improved, and the quality of the obtained finished product is improved.

Drawings

Fig. 1 is a schematic diagram of the whole machine of the present utility model.

In the figure:

1 is a dry mud accumulation field, 2 is a flat plate filter press, 3 is a high-efficiency thickener, 4 is a sedimentation Chi Zha slurry pump, 5 is a sedimentation tank, 6 is a natural finished sand accumulation field, 7 is a sewage pipeline, 8 is a natural finished sand belt conveyor, 9 is a natural sand washing and fine sand recycling integrated machine, 10 is a natural sand washing wheel type sand washing machine, 11 is a natural sand washing wheel type sand washing and flushing component, 12 is a second spiral sand washing machine, 13 is a second spiral flushing component, 14 is a first spiral sand washing machine, 15 is a natural sand washing and scrubbing belt conveyor, 16 is a discharge vehicle, 17 is a discharge table, 18 is a feed hopper, 19 is a chain plate conveyor feeder, 20 is a primary separation flushing component, 21 is a debris separator, 22 is a primary separation chute, 23 is a primary separation belt conveyor, 24 is a jaw crusher, 25 is a scrubbing machine, the first belt conveyor 26, the cone crusher 27, the natural sand washing vibrating screen flushing part 28, the natural sand washing vibrating screen 29, the second belt conveyor 30, the natural sand washing vibrating screen belt conveyor 31, the cobble silo 32, the third belt conveyor 33, the cobble hopper 34, the paired roller sand making machine 35, the fourth belt conveyor 36, the sand washing vibrating screen flushing part 37, the fifth belt conveyor 38, the sand washing vibrating screen 39, the sand washing second wheel type sand washing flushing part 40, the second wheel type sand washing machine 41, the sand fine sand recycling integrated machine 42, the finished product sand belt conveyor 43, the finished product sand accumulation site 44, the sand first wheel type sand washing machine 45, the integrated electric control cabinet 46 and the dense machine slurry pump 47.

Detailed Description

The utility model is further described below with reference to the drawings and examples. The following description is by way of example only, and the scope of the utility model should not be limited thereto.

Examples:

The mine mixture machine-made sand production line with high mud content of the embodiment is composed of a discharging assembly, a preliminary washing and separating assembly, a natural sand washing and separating assembly, a sand making assembly, an integrated electric control cabinet 46 and a wastewater collecting and treating device.

The unloading assembly is composed of a feeding hopper 18 and an unloading platform 17, wherein the feeding hopper 18 is arranged on the side edge of the unloading platform 17.

The preliminary washing and separating assembly consists of a chain plate conveying feeder 19, a mudstone separator 21, a preliminary washing part 20, a preliminary belt conveyor 23 and a preliminary chute 22, wherein the input end of the chain plate conveying feeder 19 is arranged at the lower part of a feed hopper 18, the input end of the mudstone separator 21 is arranged at the lower part of the output end of the chain plate conveying feeder 19, the preliminary washing part 20 is arranged at the upper part of the mudstone separator 21, the input end of the preliminary belt conveyor 23 is arranged at the lower part of the output end of the mudstone separator 21, the output end of the preliminary belt conveyor is connected with the feed end of the sand making assembly, the preliminary chute 22 is arranged at the lower part of the mudstone separator 21, and the output end of the preliminary chute is connected with the feed end of the natural sand washing and separating assembly.

The natural sand washing subassembly is by rubbing washer 25, natural sand washing shale shaker 29, natural sand washing shale shaker washing part 28, natural sand washing rub the washing belt conveyor 15, natural sand washing shale shaker belt conveyor 31, first spiral sand washer 14, second spiral sand washer 12, second spiral washing part 13, natural sand washing wheeled sand washer 10, natural sand washing wheeled sand washing part 11 and natural sand washing fine sand recovery all-in-one 9 and natural finished sand belt conveyor 8.

The input end of the scrubbing machine 25 is arranged at the lower part of the output end of the primary chute 22, the output end of the scrubbing machine 25 is arranged at the upper part of the input end of the natural sand scrubbing belt conveyor 15, the input end of the natural sand scrubbing vibrating screen 29 is arranged at the lower part of the output end of the natural sand scrubbing belt conveyor 15, the natural sand scrubbing vibrating screen flushing part 28 is arranged at the upper part of the natural sand scrubbing vibrating screen 29, the output end of the natural sand scrubbing vibrating screen 29 is arranged at the upper part of the input end of the first spiral sand scrubbing machine 14, the natural sand scrubbing vibrating screen belt conveyor 31 is arranged at the lower part of one side of the natural sand scrubbing vibrating screen 29, the output end of the natural sand scrubbing vibrating screen belt conveyor 31 is connected with a sand making assembly, the output end of the first spiral sand scrubbing machine 14 is arranged at the upper part of the input end of the second spiral sand scrubbing machine 12, the second spiral flushing part 13 is arranged at the upper part of the second spiral sand scrubbing machine 12, the output end of the natural sand scrubbing wheel type sand scrubbing machine 12 is arranged at the upper part of the input end of the natural sand scrubbing wheel type sand scrubbing machine 10, the output end of the natural sand scrubbing wheel type sand scrubbing part 11 is arranged at the upper part of the natural sand scrubbing wheel type cleaning machine 10, the output end of the natural sand scrubbing belt conveyor 10 is arranged at the upper part of the natural sand scrubbing belt 8, and the finished product is recycled at the output end of the natural sand cleaning belt conveyor 8 is arranged at the upper part of the natural sand scrubbing belt conveyor 10.

The sand making assembly is composed of a jaw crusher 24, a first belt conveyor 26, a cone crusher 27, a second belt conveyor 30, a stone bin 32, a third belt conveyor 33, a stone feed hopper 34, a twin roller sand making machine 35, a fourth belt conveyor 36, a sand making vibrating screen 39, a sand making vibrating screen flushing component 37, a fifth belt conveyor 38, a sand making vibrating screen chute 46, a sand making first wheel type sand washer 45, a sand making fine sand recycling integrated machine 42 and a machine finished product sand belt conveyor 43.

The feed inlet of the jaw crusher 24 is arranged at the lower part of the output end of the primary separation belt conveyor 23, and the discharge outlet of the jaw crusher 24 is arranged at the upper part of the input end of the first belt conveyor 26; the feed inlet of the cone crusher 27 is arranged at the lower part of the output end of the first belt conveyor 26, the discharge outlet of the cone crusher 27 is arranged at the upper part of the input end of the second belt conveyor 30, and the output ends of the second belt conveyor 30 and the natural sand washing vibrating screen belt conveyor 31 are arranged at the upper part of the stone bin 32; the input end of the third belt conveyor 33 is arranged at the lower part of the output end of the stone bin 32, the output end of the third belt conveyor 33 is arranged at the upper part of the stone feed hopper 34, the input opening of the counter roller sand making machine 35 is arranged at the lower part of the stone feed hopper 34, the output opening of the counter roller sand making machine 35 is arranged at the upper part of the input end of the fourth belt conveyor 36, the input end of the sand making vibrating screen 39 is arranged at the lower part of the output end of the fourth belt conveyor 36, the sand making vibrating screen flushing part 37 is arranged at the upper part of the sand making vibrating screen 39, the fifth belt conveyor 38 is arranged at the lower part of one side of the sand making vibrating screen 39, the output end of the fifth belt conveyor 38 is arranged at the upper part of the stone feed hopper 34, the input part of the sand making vibrating screen 46 is arranged at the lower part of the sand making vibrating screen 39, the input end of the sand making vibrating screen 46 is arranged at the upper part of the input end of the sand making first wheel type sand making machine 45, the input end of the sand making second wheel type sand washing machine 41 is arranged at the lower part of the output end of the sand making first wheel type sand making machine 45, the output end of the second wheel type sand making vibrating screen 41 is arranged at the upper part of the sand making machine 42, the sand making second wheel type sand washing and flushing component 40 is arranged at the upper part of the sand making second wheel type sand washer 41, the input end of the machine-made product sand belt conveyor 43 is arranged at the lower part of the output end of the sand making fine sand recycling integrated machine 42, and the output end of the machine-made product sand belt conveyor 43 is led to the machine-made product sand accumulation field 44.

The wastewater collection treatment device comprises a plurality of sewage pipes 7, a sedimentation tank 5, a sedimentation Chi Zha slurry pump 4, a high-efficiency thickener 3, a thickener slurry pump 47 and a plate filter press 2, wherein one end of each sewage pipe 7 is communicated with the sedimentation tank 5, the other end is respectively communicated with a scrubbing machine 25, a first spiral sand washer 14, a second spiral sand washer 12, a natural sand wheel type sand washer 10, a natural sand washing fine sand recycling integrated machine 9, a sand making first wheel type sand washer 45, a sand making second wheel type sand washer 41 and a sand making fine sand recycling integrated machine 42, a sewage discharge outlet (comprising an overflow weir flow outlet on the sewage discharge outlet), the sedimentation tank 5 is arranged beside a production line (namely, a mine mixture machine sand production line with high mud content in the embodiment is arranged below), the sedimentation Chi Zha slurry pump 4 is arranged in the sedimentation tank 5, the output end of the sedimentation Chi Zha slurry pump 4 is connected with the input end of the high-efficiency thickener 3, the input end of the thickener slurry pump 47 is arranged at the output end of the high-efficiency thickener 3, the output end of the thickener slurry pump 47 is connected with the output end of the plate filter press 2.

The integrated electric control cabinet 46 is arranged beside the production line, and control lines (including power lines) of the integrated electric control cabinet are respectively connected with the preliminary washing subassembly, the natural sand washing subassembly and the sand making subassembly.

The primary separation flushing part 20, the natural sand washing vibrating screen flushing part 28, the second spiral flushing part 13, the natural sand washing wheel type sand washing flushing part 11, the sand making vibrating screen flushing part 37 and the sand making second wheel type sand washing flushing part 40 are all connected with a high-pressure water pump (not shown in the drawing) through a high-pressure water pipe (not shown in the drawing), and high-pressure water flow is provided for the high-pressure water pump.

All the devices involved in this example are commercially available devices that are well established.

The production line of the mine mixture machine-made sand with high mud content in the embodiment comprises the following production processes that all equipment (including a high-pressure water pump) is started through a control button on an integrated electric control cabinet 46, and then normal production is started. The mine mixture with high mud content is discharged from the discharge table 17 to the feed hopper 18 by the discharge carriage 16, and then enters the input end of the drag conveyor feeder 19, and is conveyed to the mud-stone separator 21 by the drag conveyor feeder 19. The mud-stone separator 21 is provided with a plurality of parallel linkage shafts, the linkage shafts are driven by a motor to perform overturning operation, gaps are arranged between the linkage shafts, high-pressure water of the primary separation flushing component 20 is used for flushing, large stones in the mine mixture are enabled to move towards an output end under the action of the plurality of rolling linkage shafts (due to the fact that spiral rings are arranged on the linkage shafts, when the linkage shafts rotate, the spiral rings can stir and separate mud adhered to the stones), the mud-stone separator is conveyed from a discharge end of the mud-stone separator 21 to an input end of the primary separation belt conveyor 23 and then conveyed to a feed inlet of the jaw crusher 24 of the sand making assembly, and mud stones and fine sand fall into the primary separation chute 22 under the mud-stone separator 21 together with flushing water through the gaps and enter the rubbing and washing machine 25.

The mud stone and fine sand (including the water sprayed by the primary washing part 20) which enter the scrubbing machine 25 from the primary chute 22 are melted in the water during the scrubbing process, the impurities are brought to the water surface and flow out through the overflow weir, then are drained to the sedimentation tank 5 through the sewage pipe 7, the fine sand and a small amount of mud blocks are transported into the natural sand washing vibrating screen 29 for secondary washing and screening through the natural sand washing scrubbing belt conveyor 15 after being scrubbed, the natural sand washing vibrating screen 29 is provided with the natural sand washing vibrating screen washing part 28, the high-pressure water sprayed out of the natural sand washing vibrating screen flushing part 28 is used for impacting and cleaning the oversize materials of the natural sand washing vibrating screen 29 and preventing mud from blocking the screen, a screen with the aperture of 4.75mm is arranged on the natural sand washing vibrating screen 29, the screened materials with the aperture of more than 4.75mm are conveyed into a stone bin 32 through a natural sand washing vibrating screen belt conveyor 31, the materials with the aperture of less than 4.75mm and mud water enter the input end of a first spiral sand washer 14 arranged below the natural sand washing vibrating screen 29, the first spiral sand washer 14 is obliquely arranged, the input end is a water tank, and the materials and mud water enter the water tank (namely: input end), the sand and stones are rolled and rubbed with each other under the action of the rotating screw, natural fine sand is conveyed upwards to a top discharge port (i.e. an output end) of the first screw sand washer 14 through the rotation of the screw, then enters a feed end (i.e. an input end and a water tank) of the second screw sand washer 12, after the sand and stones are rubbed again by the screw, mud is melted into water, impurities are brought to the water surface and flow out to a sedimentation tank through an overflow weir, meanwhile, a second screw flushing part 13 arranged at the upper part of the second screw sand washer 12 is used for injecting clean water into the water tank at the feed end, the natural sand is further cleaned, separated mud and impurities flow out through an overflow weir, then the separated mud and impurities flow into a sedimentation tank 5 for sedimentation through a sewage pipe 7, the cleaned natural sand enters a natural sand wheel type sand washer 10 after being scrubbed for the second time, clean water is injected into a natural sand wheel type sand washer flushing part 11 arranged at the upper part of the natural sand wheel type sand washer 10, the cleaned natural sand wheel type sand washer flushing part directly falls onto a dewatering screen of the natural sand wheel type sand washer 9 after being scrubbed, waste water overflowed from the natural sand wheel type sand washer 10 and fine sand contained in the waste water also enter a chassis of the natural sand wheel type sand washer 9 at the same time, the slurry pump in the waste water pump pumps the waste water to a mud sand high-pressure separator of the natural sand wheel type sand washer 9 for sand-water separation, fine sand with the size of more than 0.16mm is sprayed onto a dewatering screen of the natural sand wheel type sand washer 9 from a sand blast nozzle of the separator, and the natural sand wheel type sand washer 10 is mixed and dewatered, and then the natural sand finished product sand is conveyed to a natural product sand storage 6 through a natural sand belt conveyor 8. A small amount of mixed waste water of tailings and mud below 0.16mm overflows from an overflow port of the natural sand washing and fine sand recycling integrated machine 9, and is drained to the sedimentation tank 5 through the sewage pipe 7 for sedimentation. After four water washes (including the first wash of the mudstone and fine sand on the mudstone separator 21), especially three clean clear water is injected and sand is washed by a secondary spiral, the mud content in the natural sand can be controlled within 3%.

Meanwhile, the large stone separated from the mud stone separator 21 is conveyed to a sand making assembly through a primary separation belt conveyor 23, is subjected to primary crushing through a jaw crusher 24, is conveyed to a cone crusher 27 through a first belt conveyor 26 to be subjected to secondary crushing, is conveyed to a stone storage bin 32 through a second belt conveyor 30 to be temporarily stored, stones in the stone storage bin 32 are conveyed to a stone feed hopper 34 at the upper part of a double-roller sand making machine 35 through a third belt conveyor 33, enter a crushing cavity of the double-roller sand making machine 35, fall onto a fourth belt conveyor 36 under the double-roller sand making machine 35 after being crushed, are conveyed to a sand making vibrating screen 39 to be screened, a sand making vibrating screen flushing part 37 arranged at the upper part of the sand making vibrating screen 39 is used for injecting clean water into the sand making vibrating screen 39, a screen with a pore diameter of 4.75mm is arranged on the sand making vibrating screen 39, and the screened materials with a pore diameter of more than 4.75mm are returned to the stone feed hopper 34 at the upper part of the double-roller sand making machine 35 through a fifth belt conveyor 38 to be crushed again and then extruded; the materials with the diameter of less than 4.75mm and water are flushed into a sand making first wheel type sand washer 45 arranged at the lower part of a sand making vibrating screen 39, the materials are washed by wheel type water and then enter a sand making second wheel type sand washer 41, a sand making second wheel type sand washer flushing component 40 arranged at the upper part of the sand making second wheel type sand washer 41 injects clear water into the sand making second wheel type sand washer 41, the machine-made sand directly falls into a dewatering screen of a sand making fine sand recycling integrated machine 42 after being washed for the second time, waste water overflowed from the sand making first wheel type sand washer 45 and the sand making second wheel type sand washer 41 and fine sand contained in the waste water also enter a cabinet of the sand making fine sand recycling integrated machine 42 at the same time, the slurry pump is pumped into a mud sand high-pressure separator of the sand making fine sand recycling integrated machine 42 to separate sand and water, fine sand with the diameter of more than 0.16mm is sprayed out of a sand spraying nozzle of the separator onto a dewatering screen, is mixed with sand on the dewatering screen and cleaned by a sand making second wheel type sand washer 41 to be dewatered, and is conveyed to a machine-made finished sand accumulation field 44 (namely, the machine-made sand finished product warehouse workshop) by a machine-made finished product sand belt conveyor 43. A small amount of mixed waste water of tailings and mud below 0.16mm overflows from an overflow port of the sand making fine sand recycling integrated machine 42, and is drained to the sedimentation tank 5 through the sewage pipe 7 for sedimentation. After three water washes (including the first wash of the stone on the mudstone separator 21), in particular after two clean water washes are injected, the mud content in the machine sand can be controlled within 3%.

Because the mud content in the mine mixture with high mud content is high, the produced wastewater is gathered in the sedimentation tank 5 after being washed for a plurality of times, the sediment slurry precipitated at the lower part of the wastewater is pumped into the high-efficiency thickener 3 by the sediment Chi Zha slurry pump 4 after being precipitated for a certain time, the rapid separation is carried out, the sludge separated from the bottom of the high-efficiency thickener 3 is pumped into the plate filter press 2 by the thickener sediment slurry pump 47, the sludge is temporarily stored in the dry mud accumulation field 1 after being dehydrated by the plate filter press 2, and the water can be recycled after being precipitated and cleared. The method selects a screen with the aperture of 4.75mm, the fineness modulus of the machine-made sand is about 3.5, the grading is reasonable, the method accords with the national coarse sand standard, and if the screen with the aperture of 3.5mm is selected, the fineness modulus of the machine-made sand is about 3.0, the grading is reasonable, and the method accords with the national medium sand standard. Meanwhile, the mud content is controlled within 3 percent due to cleaning, and the concrete can be applied to high-standard concrete with the content of C30.

The production line of the machine-made sand of the mine mixture with high mud content is suitable for preparing natural sand and machine-made sand respectively by utilizing the raw materials with high mud content, such as the breccia generated when the surface soil of the mine is stripped and the residual mud and slag of the building pile foundation in the alluvial plain area.

Claims (10)

1. The mine mixture machine-made sand production line with the high mud content is characterized by comprising a preliminary washing subassembly, a natural sand washing subassembly, a sand making subassembly, an integrated electric control cabinet (46) and a wastewater collection and treatment device, wherein the natural sand washing subassembly and the sand making subassembly are respectively connected to the output end of the preliminary washing subassembly, the integrated electric control cabinet (46) is arranged beside the production line, the control line of the integrated electric control cabinet is respectively connected with the preliminary washing subassembly, the natural sand washing subassembly and the sand making subassembly, and the wastewater collection and treatment device is arranged beside the production line and is respectively communicated with the preliminary washing subassembly, the natural sand washing subassembly and the sand making subassembly through a sewage pipe (7).

2. The mine mixture machine-made sand production line with high mud content according to claim 1, wherein the preliminary washing sub-assembly comprises a chain plate conveying feeder (19), a mud-stone separator (21), a preliminary separation flushing component (20), a preliminary separation belt conveyor (23) and a preliminary separation chute (22), wherein the input end of the mud-stone separator (21) is arranged at the lower part of the output end of the chain plate conveying feeder (19), the preliminary separation flushing component (20) is arranged at the upper part of the input end of the preliminary separation belt conveyor (23), the input end of the preliminary separation belt conveyor is arranged at the lower part of the output end of the mud-stone separator (21), the output end of the preliminary separation belt conveyor is connected with the feed end of the sand making assembly, and the preliminary separation chute (22) is arranged at the lower part of the mud-stone separator (21), and the output end of the preliminary separation belt conveyor is connected with the feed end of the natural sand washing sub-assembly.

3. The mine mixture machine-made sand production line with high mud content according to claim 2 is characterized in that a feed hopper (18) and a discharge table (17) are further arranged in sequence at the front part of the input end of the chain plate conveying feeder (19), and the feed hopper (18) is arranged at the upper part of the input end of the chain plate conveying feeder (19).

4. The mine mixture machine-made sand production line with high mud content according to claim 3, wherein the natural sand washing sub-assembly comprises a washing machine (25), a natural sand washing vibrating screen (29), a natural sand washing vibrating screen washing component (28), a natural sand washing belt conveyor (15), a natural sand washing vibrating screen belt conveyor (31), a first spiral sand washing machine (14) and a natural sand washing fine sand recycling integrated machine (9), the input end of the washing machine (25) is arranged at the lower part of the output end of the primary separation chute (22), the output end of the washing machine is arranged at the upper part of the input end of the natural sand washing belt conveyor (15), the input end of the natural sand washing vibrating screen (29) is arranged at the lower part of the output end of the natural sand washing vibrating screen washing belt conveyor (15), the upper part of the washing vibrating screen washing component (28) is arranged at the upper part of the input end of the natural sand washing vibrating screen belt conveyor (14), the output end of the washing vibrating screen belt conveyor (31) is arranged at the lower part of one side of the natural sand washing screen (29), and the output end of the vibrating screen belt conveyor (31) is connected with the output end of the first spiral sand washing machine (14) and the output end of the natural sand washing integrated machine (9) is arranged at the upper part of the output end of the sand washing integrated machine.

5. The mine mixture machine sand production line with high mud content according to claim 4, wherein a second spiral sand washer (12) and a second spiral flushing component (13) are further arranged between the output end of the first spiral sand washer (14) and the input end of the natural sand washing and fine sand recycling integrated machine (9), the input end of the second spiral sand washer (12) is arranged at the lower part of the output end of the first spiral sand washer (14), the output end of the second spiral sand washer is arranged at the upper part of the input end of the natural sand washing and fine sand recycling integrated machine (9), and the second spiral flushing component (13) is arranged at the upper part of the second spiral sand washer.

6. The mine mixture machine-made sand production line with high mud content according to claim 5, wherein a natural sand washing wheel type sand washing machine (10) and a natural sand washing wheel type sand washing flushing component (11) are further arranged between the output end of the second spiral sand washing machine (12) and the input end of the natural sand washing and fine sand recycling integrated machine (9), the input end of the natural sand washing wheel type sand washing machine (10) is arranged at the lower part of the output end of the second spiral sand washing machine (12), the output end of the natural sand washing wheel type sand washing machine is arranged at the upper part of the input end of the natural sand washing and fine sand recycling integrated machine (9), and the natural sand washing wheel type sand washing flushing component (11) is arranged at the upper part of the natural sand washing wheel type sand washing flushing component.

7. The mine mixture machine-made sand production line with high mud content as set forth in claim 6, wherein the sand making assembly comprises a jaw crusher (24), a first belt conveyor (26), a cone crusher (27), a second belt conveyor (30), a stone bin (32), a third belt conveyor (33), a stone feed hopper (34), a pair roller sand making machine (35), a fourth belt conveyor (36), a sand making vibrating screen (39), a sand making vibrating screen flushing component (37), a fifth belt conveyor (38), a sand making first wheel type sand washer (45) and a sand making fine sand recycling integrated machine (42), wherein a feed inlet of the jaw crusher (24) is arranged at the lower part of an output end of the preliminary belt conveyor (23), a discharge outlet of the jaw crusher is arranged at the upper part of an input end of the first belt conveyor (26), a feed inlet of the cone crusher (27) is arranged at the lower part of the output end of the first belt conveyor (26), a discharge outlet of the jaw crusher is arranged at the upper part of the second belt conveyor (30), a discharge outlet of the jaw crusher is arranged at the upper part of the second belt conveyor (31), a discharge outlet of the jaw crusher is arranged at the upper part of the stone conveyor (32), and a discharge outlet of the jaw crusher is arranged at the lower part of the stone conveyor (31) is arranged at the output end of the belt conveyor (32), the sand making device comprises a sand making vibrating screen (39), a sand making vibrating screen flushing component (37), a fifth belt conveyor (38) and a sand making fine sand recycling integrated machine (42), wherein the output end of the sand making vibrating screen is arranged at the upper part of a stone feeding hopper (34), a feeding port of the pair of roller sand making machines (35) is arranged at the lower part of the stone feeding hopper (34), a discharging port of the pair of roller sand making machines is arranged at the upper part of the input end of a fourth belt conveyor (36), the input end of the sand making vibrating screen (39) is arranged at the lower part of the output end of the fourth belt conveyor (36), the fifth belt conveyor (38) is arranged at the lower part of one side of the fifth belt conveyor, the output end of the fifth belt conveyor (38) is arranged at the upper part of the stone feeding hopper (34), and the output end of the sand making vibrating screen (39) is arranged at the upper part of the input end of the sand making first wheel type sand washing machine (45).

8. The mine mixture machine-made sand production line with high mud content according to claim 7, wherein a sand making second wheel type sand washer (41) and a sand making second wheel type sand washer flushing component (40) are further arranged between the sand making first wheel type sand washer (45) and the sand making fine sand recycling integrated machine (42), the input end of the sand making second wheel type sand washer (41) is arranged at the lower part of the output end of the sand making first wheel type sand washer (45), the output end of the sand making second wheel type sand washer flushing component (40) is arranged at the upper part of the input end of the sand making fine sand recycling integrated machine (42).

9. The mine mixture machine-made sand production line with high mud content according to claim 8, wherein the wastewater collection and treatment device comprises a sewage pipe (7), a sedimentation tank (5), a sedimentation Chi Zha pulp pump (4) and a plate filter press (2), one end of the sewage pipe (7) is communicated with the sedimentation tank (5), the other end of the sewage pipe is respectively communicated with a scrubbing machine (25), a first spiral sand washer (14), a second spiral sand washer (12), a natural sand wheel type sand washer (10), a natural sand washing fine sand recovery integrated machine (9), a sand making first wheel type sand washer (45), a sand making second wheel type sand washer (41) and a sewage discharge port at the lower part of the sand making fine sand recovery integrated machine (42), and the sedimentation Chi Zha pulp pump (4) is arranged in the sedimentation tank (5) and the output end of the sedimentation Chi Zha pulp pump is connected with the plate filter press (2).

10. The mine mixture machine-made sand production line with high mud content according to claim 9 is characterized in that a high-efficiency thickener (3) and a thickener slurry pump (47) are further arranged between the sedimentation tank (5) and the plate filter press (2), the output end of the sedimentation Chi Zha slurry pump (4) is connected with the input end of the high-efficiency thickener (3), the input end of the thickener slurry pump (47) is arranged at the output end of the high-efficiency thickener (3), and the output end of the thickener slurry pump (47) is arranged at the input end of the plate filter press (2).