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

Abstract

The utility model discloses a high-silt-content mine mixture machine-made sand production line, and relates to the technical field of mechanical sand making equipment, the high-silt-content mine mixture machine-made sand production line comprises a preliminary washing sub-assembly, a natural sand washing sub-assembly, a sand making assembly, an integrated electric control cabinet 46 and a waste water collecting and treating device, the natural sand washing sub-assembly and the sand making assembly are respectively connected to the output end of the preliminary washing sub-assembly; the integrated electric control cabinet 46 is arranged beside the production line, and a control line of the integrated electric control cabinet 46 is respectively connected with the primary washing sub-assembly, the natural sand washing sub-assembly and the sand making assembly; the wastewater collecting and treating device is arranged beside the production line and is respectively communicated with the primary washing sub-assembly, the natural sand washing sub-assembly and the sand making assembly through a sewage pipe 7; the high-mud-content mine mixture machine-made sand production line has the advantages of being high in yield, good in quality, capable of utilizing high-mud-content mine mixed raw materials and the like, and is suitable for preparing natural sand and machine-made sand from high-mud-content raw materials such as rubble soil and residual mud of building pile foundations.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical sand making equipment, in particular to a mechanical sand production line for mine mixtures with high mud content. Background Art

[0002] With the continuous development of the domestic economy, the scale of domestic infrastructure construction is getting bigger and bigger. As an important building material, the demand for river sand is also increasing. Therefore, machine-made sand made from various non-metallic ores, mine tailings, industrial waste residues and other raw materials that meet the requirements of sand making has gradually replaced natural sand.

[0003] When the topsoil of a mine is stripped, the resulting brecciated soil contains raw materials that meet the requirements of sand making, but it also contains a large amount of impurities such as mud blocks and tree roots. The mud content in some places is as high as 50%. In alluvial plains such as the Yangtze River Delta and the Pearl River Delta in my country, the residual mud and slag from building pile foundations contains a large amount of accumulated coarse sand, gravel, granite and clay. The sand content in the residual mud and slag excavated from some pile foundation projects is even more than 70%, which creates very favorable natural conditions for mechanical sand making. However, the existing mechanical sand making production lines are unable to remove impurities such as mud blocks in the mixture and produce high-quality sand with a mud content of less than 3%.

[0004] The "production process and production system of artificial sand" disclosed in the Chinese patent (patent application number 202011540472.8) includes the following steps: the raw materials for making sand are crushed once, crushed twice, and processed to obtain rough artificial sand; the rough artificial sand is selected by air to obtain medium-coarse sand and fine sand; wherein the fine sand is mainly composed of stone powder and mica powder; the particle size of the fine sand is ≤5mm; the fine sand is screened to obtain the oversize and undersize; wherein, during screening, the aperture of the screen is 0.3-0.4mm; the undersize obtained by S4 is mixed evenly with the medium-coarse sand obtained by S3 to obtain an artificial sand product with a mica content of ≤2%. The invention can effectively control the harmful mica content in the artificial sand of the granite-based mixture within the allowable range of the specification, thereby improving the frost resistance and durability of the concrete under the same mix ratio, which can solve practical engineering problems, and has huge market promotion and application prospects and economic benefits, and the environmental benefits are also very outstanding.

[0005] Another Chinese patent (patent application number is 202220748586.X) discloses an "environmentally friendly machine-made sand production line", which includes a batching device, a feeding belt conveyor, a sand making machine, a mixing bucket elevator, a vibrating screen, a return belt conveyor, a finished product bucket elevator, a humidifier, a dust collector, an air inlet pipeline, an air outlet pipeline, a powder classifier, and a finished product belt conveyor. The sand making machine is connected to the batching device through a feeding belt conveyor, and is connected to the vibrating screen through a mixing bucket elevator. The discharging device of the vibrating screen conveys the coarse material to the sand making machine through the return belt conveyor, and the fine material is processed by the powder classifier and then transported to the finished product bucket elevator. The finished product bucket elevator is connected to the finished product belt conveyor through a humidifier. The dust collector is connected to the main dust-producing node through an air inlet pipeline, and dust suction wind is provided to the dust collector through the air outlet pipeline. A dry production process is adopted, and sludge and sewage are "zero pollution and zero emission".

[0006] There is also a Chinese patent (patent application number 201020689531.3) that discloses an "environmentally friendly wet aggregate machine-made sand production system", which includes a silo, a vibrating feeder, a coarse crusher, a first transfer silo, a first fine crusher, a second fine crusher, a second vibrating screen, a spiral sand washer, a sand slurry processor, a second transfer silo and a third vibrating screen, etc. It mainly solves the technical problem of poor quality of fine aggregate in existing mixed material production. It can efficiently produce high-quality fine aggregate with good gradation and fineness modulus, and takes into account environmental protection issues in the production process.

[0007] There is also a Chinese patent (patent application number 202211614645.5) disclosed in "A system and method for producing machine-made sand", which includes a batching device, a feeding belt conveyor, a sand making machine, a mixed material bucket elevator, a vibrating screen, a return belt conveyor, a finished product bucket elevator, a dust collector, an air inlet pipeline, an air outlet pipeline, a powder selector, and a finished product belt conveyor, characterized in that the feed end of the sand making machine is connected to the batching device through a feeding belt conveyor. The invention uses less equipment, which is more than 30% less than the traditional process; the invention reduces labor costs, and the number of maintenance personnel can be reduced by more than 40%; compared with traditional processes, the invention can reduce dust and is more environmentally friendly.

[0008] There is also a Chinese patent (patent application number 201710813119.4) that discloses "mechanical sand production process and production system for implementing the production process", in which the mechanical sand production system includes a sand making machine and a screening machine, and a powder selection and grading system for sorting the materials to be sorted output by the sand making machine is provided between the sand making machine and the screening machine, and the powder selection and grading system has an inlet for materials to be sorted, a stone powder outlet, and an outlet for mixed materials to be screened connected to the inlet of the screening machine. The mechanical sand production process of the invention includes using a powder selection and grading system to sort the materials to be sorted output by the mechanical sand. The mechanical sand production process of the invention and the production system for implementing the production process use the powder selection and grading system to sort the materials to be sorted after being crushed by the sand making machine and then remove dust, which reduces the load of the screening machine and avoids dust clogging the screen when the water content is high, while reducing the energy consumption of the crushing system and increasing the system output. Summary of the invention

[0009] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a device that can utilize mixed raw materials from mines with a high mud content to prepare machine-made sand while sorting out natural sand, and the device has the advantages of high output and good quality.

[0010] In order to solve the above technical problems, the technical solution adopted by the utility model is to design a machine-made sand production line for mining mixtures with high mud content: it includes a preliminary washing component, a natural sand washing component, a sand making component, an integrated electric control cabinet 46 and a wastewater collection and treatment device, 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 next to 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 collection and treatment device is arranged next to the production line, and it is connected to the preliminary washing component, the natural sand washing component and the sand making component through a sewage pipe 7.

[0011] The preliminary washing component includes a chain conveyor feeder 19, a mud and stone separator 21, a preliminary washing component 20, a preliminary belt conveyor 23 and a preliminary chute 22. The input end of the mud and stone separator 21 is arranged at the lower part of the output end of the chain conveyor feeder 19, and the preliminary washing component 20 is arranged on the upper part; the input end of the preliminary belt conveyor 23 is arranged at the lower part of the output end of the mud and stone separator 21, and the output end thereof is connected to the feed end of the sand making component; the preliminary chute 22 is arranged at the lower part of the mud and stone separator 21, and the output end thereof is connected to the feed end of the natural sand washing component.

[0012] A feed hopper 18 and a discharge platform 17 are sequentially arranged in front of the input end of the chain plate conveyor feeder 19 ; the feed hopper 18 is arranged at the upper part of the input end of the chain plate conveyor feeder 19 .

[0013] The natural sand washing subassembly includes a scrubbing machine 25, a natural sand washing vibrating screen 29, a natural sand washing vibrating screen flushing component 28, a natural sand washing scrubbing 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 recovery integrated machine 9; the input end of the scrubbing machine 25 is placed at the lower part of the output end of the primary separation chute 22, and its output end is placed at the upper part of the input end of the natural sand washing scrubbing belt conveyor 15; the input end of the natural sand washing vibrating screen 29 is placed at the lower part of the output end of the natural sand washing scrubbing belt conveyor 15, and the natural sand washing vibrating screen flushing component 28 is arranged on the upper part, and its output end is placed at the upper part of the input end of the first spiral sand washing machine 14; the natural sand washing vibrating screen belt conveyor 31 is placed at the lower part of one side of the natural sand washing vibrating screen 29, and its output end is connected to the sand making component; the output end of the first spiral sand washing machine 14 is placed at the upper part of the input end of the natural sand washing fine sand recovery integrated machine 9.

[0014] A second spiral sand washing machine 12 and a second spiral flushing component 13 are also provided between the output end of the first spiral sand washing machine 14 and the input end of the natural sand washing and fine sand recovery integrated machine 9; the input end of the second spiral sand washing machine 12 is placed at the lower part of the output end of the first spiral sand washing machine 14, and its output end is placed at the upper part of the input end of the natural sand washing and fine sand recovery integrated machine 9, and the second spiral flushing component 13 is placed at its upper part.

[0015] A natural sand wheel sand washing machine 10 and a natural sand wheel sand washing and flushing component 11 are also provided between the output end of the second spiral sand washing machine 12 and the input end of the natural sand washing and fine sand recovery integrated machine 9; the input end of the natural sand wheel sand washing machine 10 is placed at the lower part of the output end of the second spiral sand washing machine 12, and its output end is placed at the upper part of the input end of the natural sand washing and fine sand recovery integrated machine 9, and the natural sand wheel sand washing and flushing component 11 is placed at its upper part.

[0016] The sand making assembly includes a jaw crusher 24, a first belt conveyor 26, a cone crusher 27, a second belt conveyor 30, a gravel silo 32, a third belt conveyor 33, a gravel feed hopper 34, a 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 first wheel sand washing machine 45 for sand making and a sand making fine sand recovery integrated machine 42; the feed inlet of the jaw crusher 24 is placed at the lower part of the output end of the primary belt conveyor 23, and the discharge port thereof is placed at the upper part of the input end of the first belt conveyor 26; the feed inlet of the cone crusher 27 is placed at the lower part of the output end of the first belt conveyor 26, and the discharge port thereof is placed at the upper part of the input end of the second belt conveyor 30; the second belt conveyor 30 and the natural sand washing vibrating screen belt conveyor 31 the output end of the sand making machine 36 is placed at the upper part of the gravel silo 32; the input end of the third belt conveyor 33 is placed at the lower part of the output end of the gravel silo 32, and its output end is placed at the upper part of the gravel feed hopper 34; the feeding port of the roller sand making machine 35 is placed at the lower part of the gravel feed hopper 34, and its discharge port is placed 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 placed at the lower part of the output end of the fourth belt conveyor 36, the sand making vibrating screen flushing component 37 is placed at its upper part, the fifth belt conveyor 38 is placed at the lower part of one side thereof, the output end of the fifth belt conveyor 38 is placed at the upper part of the gravel feed hopper 34, and the output end of the sand making vibrating screen 39 is placed at the upper part of the input end of the first wheel sand washing machine 45 for sand making; the output end of the first wheel sand washing machine 45 for sand making is placed at the upper part of the input end of the sand making and fine sand recovery integrated machine 42.

[0017] A second wheel sand washing machine 41 and a second wheel sand washing and flushing component 40 are also provided between the first wheel sand washing machine 45 for sand making and the sand making fine sand recovery integrated machine 42; the input end of the second wheel sand washing machine 41 for sand making is placed at the lower part of the output end of the first wheel sand washing machine 45 for sand making, and its output end is placed at the upper part of the input end of the sand making fine sand recovery integrated machine 42, and the second wheel sand washing and flushing component 40 for sand making is placed at its upper part.

[0018] The wastewater collection and treatment device includes a sewage pipe 7, a sedimentation tank 5, a sedimentation tank slurry pump 4, and a flat filter press 2; one end of the sewage pipe 7 is connected to the sedimentation tank 5, and the other end is respectively connected to the scrubbing machine 25, the first spiral sand washing machine 14, the second spiral sand washing machine 12, the natural sand washing wheel sand washing machine 10, the natural sand washing and fine sand recovery integrated machine 9, the sand making first wheel sand washing machine 45, the sand making second wheel sand washing machine 41 and the sewage discharge outlet at the bottom of the sand making fine sand recovery integrated machine 42; the sedimentation tank slurry pump 4 is placed in the sedimentation tank 5, and its output end is connected to the flat filter press 2.

[0019] A high-efficiency thickener 3 and a thickener slurry pump 47 are also provided between the sedimentation tank 5 and the plate filter press 2; the output end of the sedimentation tank slurry pump 4 is connected to the input end of the high-efficiency thickener 3, the input end of the thickener slurry pump 47 is placed at the output end of the high-efficiency thickener 3, and the output end of the thickener slurry pump 47 is placed at the input end of the plate filter press 2.

[0020] The utility model of the machine-made sand production line for high-mud-content mine mixture includes three major components in the production line: a preliminary washing component, a natural sand washing component, and a sand making component. After the high-mud-content mine mixed raw materials are initially separated by the preliminary washing component, the mud slurry containing natural sand is washed by the natural sand washing component, and then qualified natural sand is separated. The initially separated coarse gravel or granite or ore is prepared into qualified machine-made sand by the sand making component. Therefore, it can use the mine mixture with high mud content to prepare machine-made sand. At the same time, since two sets of components are used to wash and machine-made sand respectively, and after multiple screening and washing, its production efficiency is relatively high, thereby greatly improving the output of the production line and improving the quality of the obtained finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the whole machine of the utility model.

[0022] In the figure:

[0023] 1 is the dry mud storage field, 2 is the flat filter press, 3 is the high-efficiency thickener, 4 is the sedimentation tank slurry pump, 5 is the sedimentation tank, 6 is the natural finished sand storage field, 7 is the sewage pipe, 8 is the natural finished sand belt conveyor, 9 is the natural sand washing and fine sand recovery integrated machine, 10 is the natural sand washing wheel sand washing machine, 11 is the natural sand washing wheel sand washing flushing component, 12 is the second spiral sand washing machine, 13 is the second spiral flushing component, 14 is the first spiral sand washing machine, 15 is the natural sand washing and scrubbing belt conveyor, 16 is the unloading car, 17 is the unloading platform, 18 is the feeding hopper, 19 is the chain conveyor feeder, 20 is the primary separation and flushing component, 21 is the mud and stone separator, 22 is the primary separation chute, 23 is the primary separation belt conveyor, 24 is the jaw crusher, 25 is the scrubbing machine, 26 It is the first belt conveyor, 27 is the cone crusher, 28 is the natural sand washing vibrating screen flushing component, 29 is the natural sand washing vibrating screen, 30 is the second belt conveyor, 31 is the natural sand washing vibrating screen belt conveyor, 32 is the gravel silo, 33 is the third belt conveyor, 34 is the gravel feeding hopper, 35 is the roller sand making machine, 36 is the fourth belt conveyor, 37 is the sand making vibrating screen flushing component, 38 is the fifth belt conveyor, 39 is the sand making vibrating screen, 40 is the sand making second wheel sand washing flushing component, 41 is the second wheel sand washing machine, 42 is the sand making fine sand recovery integrated machine, 43 is the machine-made finished sand belt conveyor, 44 is the machine-made finished sand storage yard, 45 is the sand making first wheel sand washing machine, 46 is the integrated electric control cabinet, and 47 is the thickener slurry pump. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The following description is in the form of examples, but the protection scope of the present invention should not be limited thereto.

[0025] Example:

[0026] The machine-made sand production line for mining mixture with high mud content in this embodiment is composed of a discharging component, a preliminary washing component, a natural sand washing component, a sand making component, an integrated electric control cabinet 46 and a wastewater collection and treatment device.

[0027] The unloading assembly is composed of a feed hopper 18 and a unloading platform 17 , and the feed hopper 18 is arranged on the side of the unloading platform 17 .

[0028] The preliminary washing component is composed of a chain conveyor feeder 19, a mud and stone separator 21, a preliminary washing component 20, a preliminary belt conveyor 23 and a preliminary chute 22. The input end of the chain conveyor feeder 19 is placed at the lower part of the feed hopper 18, the input end of the mud and stone separator 21 is arranged at the lower part of the output end of the chain conveyor feeder 19, and the preliminary washing component 20 is arranged at the upper part of the mud and stone separator 21; the input end of the preliminary belt conveyor 23 is arranged at the lower part of the output end of the mud and stone separator 21, and its output end is connected to the feed end of the sand making component; the preliminary chute 22 is arranged at the lower part of the mud and stone separator 21, and its output end is connected to the feed end of the natural sand washing component.

[0029] The natural sand washing subassembly is composed of a scrubbing machine 25, a natural sand washing vibrating screen 29, a natural sand washing vibrating screen flushing component 28, a natural sand washing scrubbing belt conveyor 15, a natural sand washing vibrating screen belt conveyor 31, a first spiral sand washing machine 14, a second spiral sand washing machine 12, a second spiral flushing component 13, a natural sand washing wheel sand washing machine 10, a natural sand washing wheel sand washing flushing component 11, a natural sand washing fine sand recovery integrated machine 9 and a natural finished sand belt conveyor 8.

[0030] The input end of the scrubbing machine 25 is placed at the lower part of the output end of the primary separation chute 22, and the output end of the scrubbing machine 25 is arranged at the upper part of the input end of the natural sand washing scrubbing 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 scrubbing belt conveyor 15, the natural sand washing vibrating screen flushing component 28 is arranged at the upper part of the natural sand washing vibrating screen 29, and the output end of the natural sand washing vibrating screen 29 is arranged at the upper part of the input end of the first spiral sand washing machine 14; 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, and its output end is connected to the sand making component; the output end of the first spiral sand washing machine 14 is arranged At the upper part of the input end of the second spiral sand washing machine 12, the second spiral flushing component 13 is arranged at the upper part of the second spiral sand washing machine 12; the output end of the second spiral sand washing machine 12 is arranged at the upper part of the input end of the natural sand washing wheel sand washing machine 10, and the natural sand washing wheel sand washing flushing component 11 is arranged at the upper part of the natural sand washing wheel sand washing machine 10; the output end of the natural sand washing wheel sand washing machine 10 is arranged at the upper part of the input end of the natural sand washing and fine sand recovery integrated machine 9; the input end of the natural finished sand belt conveyor 8 is arranged at the lower part of the output end of the natural sand washing and fine sand recovery integrated machine 9, and the output end of the natural finished sand belt conveyor 8 leads to the natural finished sand accumulation yard 6.

[0031] The sand making component is composed of a jaw crusher 24, a first belt conveyor 26, a cone crusher 27, a second belt conveyor 30, a gravel silo 32, a third belt conveyor 33, a gravel feed hopper 34, a double-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 sand washing machine 45, a sand making fine sand recovery integrated machine 42 and a machine-made finished sand belt conveyor 43.

[0032] The feed port of the jaw crusher 24 is arranged at the lower part of the output end of the primary belt conveyor 23, and the discharge port of the jaw crusher 24 is arranged at the upper part of the input end of the first belt conveyor 26; the feed port of the cone crusher 27 is arranged at the lower part of the output end of the first belt conveyor 26, and the discharge port 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 both arranged at the upper part of the gravel silo 32; the input end of the third belt conveyor 33 is arranged at the lower part of the output end of the gravel silo 32, and the output end of the third belt conveyor 33 is arranged at the upper part of the gravel feed hopper 34; the feed port of the double-roller sand making machine 35 is arranged at the lower part of the gravel feed hopper 34, and the discharge port of the double-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, and the sand making vibrating screen 39 is arranged at the lower part of the output end of the fourth belt conveyor 36. The vibrating screen flushing component 37 is arranged on the upper part of the sand making vibrating screen 39, the fifth belt conveyor 38 is arranged on the lower part of one side of the sand making vibrating screen 39, the output end of the fifth belt conveyor 38 is arranged on the upper part of the stone feed hopper 34, the input part of the sand making vibrating screen chute 46 is arranged on the lower part of the sand making vibrating screen 39, and the output end of the sand making vibrating screen chute 46 is arranged on the upper part of the input end of the first wheel sand washing machine 45 for sand making; the input end of the second wheel sand washing machine 41 for sand making is arranged on the lower part of the output end of the first wheel sand washing machine 45 for sand making, the output end of the second wheel sand washing machine 41 for sand making is arranged on the upper part of the input end of the sand making fine sand recovery integrated machine 42, and the second wheel sand washing and flushing component 40 for sand making is arranged on the upper part of the second wheel sand washing machine 41 for sand making; the input end of the machine-made finished sand belt conveyor 43 is arranged on the lower part of the output end of the sand making fine sand recovery integrated machine 42, and the output end of the machine-made finished sand belt conveyor 43 leads to the machine-made finished sand storage yard 44.

[0033] The wastewater collection and treatment device is composed of a plurality of sewage pipes 7, a sedimentation tank 5, a sedimentation tank slurry pump 4, a high-efficiency thickener 3, a thickener slurry pump 47, and a flat filter press 2. One end of all sewage pipes 7 is connected to the sedimentation tank 5, and the other end is connected to the scrubbing machine 25, the first spiral sand washing machine 14, the second spiral sand washing machine 12, the natural sand washing wheel sand washing machine 10, the natural sand washing fine sand recovery integrated machine 9, the first sand making wheel sand washing machine 45, the second sand making wheel sand washing machine 41 and the sewage at the bottom of the sand making fine sand recovery integrated machine 42. The water discharge outlet (including the overflow weir outlet thereon); the sedimentation tank 5 is arranged next to the production line (i.e., the mine mixture machine-made sand production line with high mud content in this embodiment, the same below), the sedimentation tank slurry pump 4 is placed in the sedimentation tank 5, the output end of the sedimentation tank slurry pump 4 is connected to the input end of the high-efficiency thickener 3, the input end of the thickener slurry pump 47 is placed at the output end of the high-efficiency thickener 3, the output end of the thickener slurry pump 47 is connected to the input end of the plate filter press 2, and the output end of the plate filter press 2 leads to the dry mud storage yard 1.

[0034] The integrated electric control cabinet 46 is arranged beside the production line, and its control lines (including power lines) are respectively connected to the preliminary washing assembly, the natural sand washing assembly and the sand making assembly.

[0035] The primary washing component 20, the natural sand washing vibrating screen washing component 28, the second spiral washing component 13, the natural sand washing wheel sand washing component 11, the sand making vibrating screen washing component 37 and the sand making second wheel sand washing component 40 are all connected to a high-pressure water pump (not shown in the drawings) through a high-pressure water pipe (not shown in the drawings), and the high-pressure water pump provides them with high-pressure water flow.

[0036] All the equipment involved in this embodiment are existing mature commercially available equipment.

[0037] The production process of the machine-made sand production line for high-mud content mining mixture of this embodiment is as follows: first, all equipment (including high-pressure water pump) is started by the control button on the integrated electric control cabinet 46; then, normal production begins. The high-mud content mining mixture is unloaded from the unloading platform 17 by the unloading vehicle 16 to the feed hopper 18, and then enters the input end of the chain plate conveyor feeder 19, and is transported to the mud-stone separator 21 by the chain plate conveyor feeder 19. The mud and rock separator 21 is provided with a multi-stage parallel linkage shaft, which performs a flipping operation under the drive of the motor. At the same time, there are gaps between the linkage shafts. In addition, due to the high-pressure water flushing of the primary separation and flushing component 20, large stones in the mine mixture are moved toward the output end through the action of multiple tumbling linkage shafts (because a spiral ring is provided on the linkage shaft, when the linkage shaft rotates, the spiral ring can stir up and separate the mud adhering to the stone), and are transported from the discharge end of the mud and rock separator 21 to the input end of the primary separation belt conveyor 23, and then transported to the feeding port of the jaw crusher 24 of the sand making component, while the mud and rock and fine sand fall into the primary separation chute 22 under the mud and rock separator 21 together with the flushing water through the gap and enter the scrubbing machine 25.

[0038] The mud, stone and fine sand (including the water sprayed by the primary washing component 20) entering the scrubbing machine 25 from the primary separation chute 22 are melted in the water during the scrubbing process, and the impurities are brought to the water surface and flow out through the overflow weir. Then, they are drained to the sedimentation tank 5 through the sewage pipe 7. After scrubbing, the fine sand and a small amount of mud blocks are conveyed to the natural sand washing vibrating screen 29 through the natural sand washing scrubbing belt conveyor 15 for the second cleaning and screening. The natural sand washing vibrating screen 29 is provided with a natural sand washing vibrating screen washing component 28. The high-pressure water sprayed from the natural sand washing vibrating screen washing component 28 impacts and cleans the materials on the screen of the natural sand washing vibrating screen 29 and prevents the screen from being blocked by mud. 9 is equipped with a 4.75mm pore size screen. The screened materials above 4.75mm are transported to the gravel silo 32 via the natural sand washing vibrating screen belt conveyor 31. The materials below 4.75mm and muddy water enter the input end of the first spiral sand washing machine 14 installed under the natural sand washing vibrating screen 29. The first spiral sand washing machine 14 is installed obliquely. The input end is a pool. The materials and muddy water enter the pool (i.e., the input end). Under the action of the rotating spiral, the sand and gravel roll and rub against each other. After the natural fine sand is scrubbed by the spiral, it is transported upward to the top discharge port (i.e., the output end) of the first spiral sand washing machine 14 through the rotation of the spiral, and then enters the second The feeding end (i.e., input end, also equivalent to a water pool) of the spiral sand washing machine 12, after being scrubbed by the spiral again, the mud melts in the water, and the impurities are brought to the water surface and flow out to the sedimentation tank through the overflow weir. At the same time, the second spiral flushing component 13 arranged on the upper part of the second spiral sand washing machine 12 injects clean water into the water pool at the feeding end to further clean the natural sand. The separated mud and impurities also flow out through the overflow weir, and then are drained to the sedimentation tank 5 through the sewage pipe 7 for sedimentation; the cleaned natural sand enters the natural sand wheel sand washing machine 10 after being scrubbed by the spiral twice, and the natural sand wheel sand washing flushing component 11 arranged on the upper part of the natural sand wheel sand washing machine 10 also injects clean water. Clean water, after washing, directly falls on the dewatering screen of the natural sand washing and fine sand recovery integrated machine 9. The wastewater overflowing from the natural sand washing wheel sand washing machine 10 and the fine sand contained in the wastewater also enter the chassis of the natural sand washing and fine sand recovery integrated machine 9 at the same time, and are pumped to the mud and sand high-pressure separator of the natural sand washing and fine sand recovery integrated machine 9 through the slurry pump therein for sand and water separation. Fine sand above 0.16mm is sprayed from the sandblasting nozzle of the separator to the dewatering screen of the natural sand washing and fine sand recovery integrated machine 9, and after being mixed and dehydrated with the sand on the dewatering screen that has been cleaned by the natural sand washing wheel sand washing machine 10, it is transported to the natural finished sand accumulation field 6 (i.e.: natural sand finished product warehouse) through the natural finished sand belt conveyor 8. A small amount of tailings below 0.16mm and mud mixed wastewater overflow from the overflow port of the natural sand washing and fine sand recovery integrated machine 9, and then drained to the sedimentation tank 5 through the sewage pipe 7 for sedimentation.After four water washings (including the first washing of mud and fine sand on the mud separator 21), especially three clean water injections and secondary spiral sand washing, the mud content in the natural sand can be controlled within 3%.

[0039] At the same time, the large stones separated from the mud-stone separator 21 are conveyed to the sand making assembly via the primary belt conveyor 23, firstly crushed by the jaw crusher 24, then conveyed to the cone crusher 27 by the first belt conveyor 26 for secondary crushing, and then conveyed to the gravel silo 32 for temporary storage by the second belt conveyor 30. The stones in the gravel silo 32 are then conveyed to the gravel feed hopper 34 on the top of the roller sand making machine 35 by the third belt conveyor 33, and then enter the roller sand making machine The sand is crushed in the crushing chamber of the double roller sand making machine 35, and then falls into the fourth belt conveyor 36 under the double roller sand making machine 35, and is then conveyed to the sand making vibrating screen 39 for screening. The sand making vibrating screen washing component 37 arranged on the upper part of the sand making vibrating screen 39 injects clean water into the sand making vibrating screen 39. The sand making vibrating screen 39 is equipped with a screen with an aperture of 4.75 mm. The screened materials with an aperture of 4.75 mm or larger are returned to the stone feed hopper 34 on the upper part of the double roller sand making machine 35 via the fifth belt conveyor 38, and then are squeezed and crushed again. ; Materials below 4.75 mm and water are flushed into the first wheel sand washing machine 45 installed at the bottom of the sand making vibrating screen 39, and then enter the second wheel sand washing machine 41 after wheel water washing. The second wheel sand washing flushing component 40 arranged on the upper part of the second wheel sand washing machine 41 injects clean water into the second wheel sand washing machine 41. After the second cleaning, the machine-made sand directly falls onto the dewatering screen of the sand making fine sand recovery integrated machine 42. The first wheel sand washing machine 45 and the second wheel sand washing machine 41 are The overflowing wastewater and the fine sand contained in the wastewater also enter the chassis of the sand making and fine sand recovery integrated machine 42 at the same time, and are pumped into the mud and sand high-pressure separator of the sand making and fine sand recovery integrated machine 42 through the slurry pump therein for sand and water separation. The fine sand above 0.16 mm is sprayed from the sandblasting nozzle of the separator onto the dewatering screen, mixed with the sand washed by the second wheel sand washing machine 41 on the dewatering screen, and dehydrated, and then transported to the mechanism finished sand accumulation field 44 (i.e.: the mechanism finished sand warehouse workshop) through the mechanism finished sand belt conveyor 43. A small amount of tailings below 0.16 mm and mud mixed wastewater overflow from the overflow port of the sand making and fine sand recovery integrated machine 42, and then drained to the sedimentation tank 5 through the sewage pipe 7 for sedimentation. Similarly, after three water washings (including the first flushing of stones on the mud and stone separator 21), especially after two clean water washings, the mud content in the mechanism sand can be controlled within 3%.

[0040] Since the mud content of the high-mud mining mixture used is high, after multiple washings, the wastewater generated is collected in the sedimentation tank 5. After a certain period of sedimentation, the slurry precipitated at the bottom is pumped to the high-efficiency thickener 3 by the sedimentation tank slurry pump 4 for rapid separation. The sludge separated under the high-efficiency thickener 3 is pumped to the plate filter press 2 by the thickener slurry pump 47. After the sludge is dehydrated by the plate filter press 2, it is temporarily stored in the dry mud storage field 1 and transported out regularly. The water can be recycled after sedimentation and becomes clear. In this case, a 4.75mm aperture screen is selected, and the fineness modulus of the machine-made sand is about 3.5, with reasonable gradation, which meets the national coarse sand standard. If a 3.5mm aperture screen is selected, the fineness modulus of the machine-made sand is about 3.0, with reasonable gradation, which meets the national medium sand standard. At the same time, due to the clean cleaning, the mud content is controlled within 3%, which can be used in high-standard concrete above C30.

[0041] The utility model is a high-mud content mine mixture machine-made sand production line, which is suitable for respectively preparing natural sand and machine-made sand from high-mud content raw materials such as breccia soil produced when mining surface soil is stripped and residual mud and slag from building pile foundations in alluvial plains.

Claims

1. A mine mixture machine-made sand production line with high mud content, characterized by: The invention comprises a preliminary washing component, a natural sand washing component, a sand making component, an integrated electric control cabinet (46) and a wastewater collection and treatment 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 collection and treatment 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).

2. According to claim 1, the high-mud content mine mixture machine-made sand production line is characterized by: The preliminary washing component comprises a chain plate conveyor feeder (19), a mud and stone separator (21), a preliminary washing component (20), a preliminary belt conveyor (23) and a preliminary chute (22); the input end of the mud and stone separator (21) is arranged at the lower part of the output end of the chain plate conveyor feeder (19), and the preliminary washing component (20) is arranged at the upper part; the input end of the preliminary belt conveyor (23) is arranged at the lower part of the output end of the mud and stone separator (21), and the output end thereof is connected to the feed end of the sand making component; the preliminary chute (22) is arranged at the lower part of the mud and stone separator (21), and the output end thereof is connected to the feed end of the natural sand washing component.

3. The high-mud-content mine mixture machine-made sand production line according to claim 2 is characterized by: A feed hopper (18) and a discharge platform (17) are arranged in sequence in front of the input end of the chain plate conveyor feeder (19); the feed hopper (18) is arranged on the upper part of the input end of the chain plate conveyor feeder (19).

4. The high-mud content mine mixture machine-made sand production line according to claim 3 is characterized by: The natural sand washing subassembly comprises a scrubbing machine (25), a natural sand washing vibrating screen (29), a natural sand washing vibrating screen flushing component (28), a natural sand washing scrubbing 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 recovery integrated machine (9); the input end of the scrubbing machine (25) is placed at the lower part of the output end of the primary separation chute (22), and the output end thereof is placed at the upper part of the input end of the natural sand washing scrubbing belt conveyor (15); the natural The input end of the sand washing vibrating screen (29) is placed at the lower part of the output end of the natural sand washing and scrubbing belt conveyor (15), and a natural sand washing vibrating screen flushing component (28) is arranged on the upper part thereof, and the output end thereof is placed at the upper part of the input end of the first spiral sand washing machine (14); the natural sand washing vibrating screen belt conveyor (31) is placed at the lower part of one side of the natural sand washing vibrating screen (29), and the output end thereof is connected to the sand making component; the output end of the first spiral sand washing machine (14) is placed at the upper part of the input end of the natural sand washing and fine sand recovery integrated machine (9).

5. The high-mud-content mine mixture machine-made sand production line according to claim 4 is characterized by: A second spiral sand washer (12) and a second spiral flushing component (13) are also provided between the output end of the first spiral sand washer (14) and the input end of the natural sand washing and fine sand recovery integrated machine (9); the input end of the second spiral sand washer (12) is placed below the output end of the first spiral sand washer (14), and its output end is placed above the input end of the natural sand washing and fine sand recovery integrated machine (9), and the second spiral flushing component (13) is placed above it.

6. The machine-made sand production line for mining mixture with high mud content according to claim 5 is characterized by: A natural sand wheel sand washer (10) and a natural sand wheel sand washing and flushing component (11) are also provided between the output end of the second spiral sand washer (12) and the input end of the natural sand washing and fine sand recovery integrated machine (9); the input end of the natural sand wheel sand washer (10) is placed at the lower part of the output end of the second spiral sand washer (12), and its output end is placed at the upper part of the input end of the natural sand washing and fine sand recovery integrated machine (9), and the natural sand wheel sand washing and flushing component (11) is placed at the upper part thereof.

7. The machine-made sand production line for mining mixture with high mud content according to claim 6 is characterized by: The sand making assembly comprises a jaw crusher (24), a first belt conveyor (26), a cone crusher (27), a second belt conveyor (30), a gravel silo (32), a third belt conveyor (33), a gravel feed hopper (34), a 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 first wheel sand washing machine (45) for sand making, and a sand making fine sand recovery integrated machine (42); the feed inlet of the jaw crusher (24) is arranged at the lower part of the output end of the primary belt conveyor (23), and the discharge port thereof 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), and the discharge port thereof is arranged at the upper part of the input end of the second belt conveyor (30); the second belt conveyor (30) and the natural sand washing vibrating screen belt conveyor are The output end of the conveyor belt (31) is placed on the upper part of the gravel silo (32); the input end of the third belt conveyor (33) is placed below the output end of the gravel silo (32), and its output end is placed on the upper part of the gravel feed hopper (34); the feed inlet of the roller sand making machine (35) is placed below the gravel feed hopper (34), and its discharge port is placed on the upper part of the input end of the fourth belt conveyor (36); the input end of the sand making vibrating screen (39) is placed on the lower part of the fourth belt conveyor (36); The sand-making vibration screen flushing component (37) is placed at the lower part of the output end, the sand-making vibration screen flushing component (37) is placed at the upper part thereof, the fifth belt conveyor (38) is placed at the lower part of one side thereof, the output end of the fifth belt conveyor (38) is placed at the upper part of the gravel feed hopper (34), the output end of the sand-making vibration screen (39) is placed at the upper part of the input end of the first wheel-type sand washing machine (45) for sand making; the output end of the first wheel-type sand washing machine (45) for sand making is placed at the upper part of the input end of the sand-making fine sand recovery integrated machine (42).

8. The high-mud-content mine mixture machine-made sand production line according to claim 7 is characterized by: A second wheel sand washer (41) and a second wheel sand washing and flushing component (40) are also provided between the first wheel sand washer (45) and the integrated sand recovery machine (42); the input end of the second wheel sand washer (41) is placed below the output end of the first wheel sand washer (45), and its output end is placed above the input end of the integrated sand recovery machine (42), and the second wheel sand washing and flushing component (40) is placed above it.

9. The high-mud-content mine mixture machine-made sand production line according to claim 8, characterized in that: The wastewater collection and treatment device comprises a sewage pipe (7), a sedimentation tank (5), a sedimentation tank slurry pump (4), and a plate filter press (2); one end of the sewage pipe (7) is connected to the sedimentation tank (5), and the other end is respectively connected to the sewage discharge outlets at the bottom of the scrubbing machine (25), the first spiral sand washer (14), the second spiral sand washer (12), the natural sand washing wheel sand washer (10), the natural sand washing fine sand recovery integrated machine (9), the first sand making wheel sand washer (45), the second sand making wheel sand washer (41), and the sand making fine sand recovery integrated machine (42); the sedimentation tank slurry pump (4) is placed in the sedimentation tank (5), and its output end is connected to the plate filter press (2).

10. The machine-made sand production line for mining mixture with high mud content according to claim 9, characterized in that: A high-efficiency thickener (3) and a thickener slurry pump (47) are also provided between the sedimentation tank (5) and the plate filter press (2); the output end of the sedimentation tank slurry pump (4) is connected to the input end of the high-efficiency thickener (3), the input end of the thickener slurry pump (47) is placed at the output end of the high-efficiency thickener (3), and the output end of the thickener slurry pump (47) is placed at the input end of the plate filter press (2).

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