CN216972357U

CN216972357U - Environment-friendly aggregate and machine-made sand joint production system

Info

Publication number: CN216972357U
Application number: CN202220632383.4U
Authority: CN
Inventors: 田根; 郭文晋; 冯志军; 王彦; 程建峰
Original assignee: Wuxue Changjiang Mining Co ltd
Current assignee: Wuxue Changjiang Mining Co ltd
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-07-15
Anticipated expiration: 2032-03-23

Abstract

The utility model discloses an environment-friendly aggregate and machine-made sand combined production system, and belongs to the technical field of machine-made sand. The aggregate production system comprises a fine material vibrating screen; a water spraying structure is arranged on the fine material vibrating screen; the machine-made sand production system comprises a muddy water collecting tank, a sand washer, a hydrocyclone, a first linear sieve, a first delivery pump, a sand collecting and conveying belt, an impact shaping machine, a second linear sieve, a second delivery pump, a thickening tank, a buffer tank, a filter press pump, a filter press and a clean water tank. This patent has adopted wet process system sand, but waste water reuse, and the dust volume in the production process is less than prior art, and the noise is low than prior art, and the mountain flour content in the mechanism sand is low, and mechanism sand cleanliness factor is high. In addition, the waste water treatment part of this patent has advantages such as take up an area of for a short time and processing speed is fast.

Description

Environment-friendly aggregate and machine-made sand joint production system

Technical Field

The utility model belongs to the technical field of machine-made sand, and particularly relates to an environment-friendly aggregate and machine-made sand combined production system.

Background

The sand plays an important role in filling gaps of coarse aggregates in the concrete and improving the workability of the concrete. The common sand includes natural river sand, artificial stone crusher sand, artificial pebble machine sand, etc. River sand is excavated from each river course for traditional production, and because of a large amount of river courses are excessively exploited, the speed of flood discharge of the river courses is influenced, the ecological environment of the region is damaged, and because of pot holes caused by sand excavation, garbage can be precipitated, and the water quality in the river is seriously damaged. So the state stipulates that the others are not mined except that a small amount of river channels allow the river sand to be mined again. Therefore, this resource is seriously short, and the cost of sand in concrete is continuously increased and the material is difficult to be obtained. Therefore, according to the standard requirements of the technical standard DBJ/T50-099-2010 of ready-mixed machine-made sand concrete, various sand making enterprises or concrete enterprises can turn the eyes to the gravel to manufacture particles with similar particle shapes to the river sand to replace the river sand, namely machine-made sand. According to the standard of GB/T14684-2011 construction sand, the definition of the machine-made sand is that the machine-made sand is rock, mine tailings or industrial waste slag particles which are subjected to soil removal treatment, mechanically crushed and sieved and have the particle size of less than 4.75mm, but soft and weathered particles are not included, and the machine-made sand is commonly called artificial sand.

The preparation of the machine-made sand in the prior art comprises the steps of crushing stone seeds, separating various particle-graded aggregates through each sieve pore in a vibrating screen to obtain crushed stones with large and small sizes and coarse and fine sands, then sending the fine sands into a special sand making machine, re-crushing the fine sands, selecting powder with the particle size of less than 0.075mm as limestone powder, and selecting the part with the particle size of more than 0.075mm as the machine-made sand.

In the process, a large amount of dust and high noise are generated in the crushing and screening process, and a dust treatment system is specially equipped; in addition, the machine-made sand prepared by the method has high stone powder content and may not meet the requirements of part of customers.

Disclosure of Invention

In order to solve the problems, the embodiment of the utility model provides an environment-friendly aggregate and machine-made sand combined production system, wet-method sand making is adopted, waste water can be recycled, the dust amount in the production process is less than that in the prior art, the noise is lower than that in the prior art, the stone powder content in the machine-made sand is low, and the cleanliness of the machine-made sand is high. The technical scheme is as follows:

the embodiment of the utility model provides an environment-friendly aggregate and machine-made sand combined production system, which comprises an aggregate production system and a machine-made sand production system, wherein the aggregate production system comprises a fine material vibrating screen; the machine-made sand production system comprises a mud-water collecting tank, a sand washer, a hydrocyclone, a first linear sieve, a first conveying pump, a sand collecting and conveying belt, an impact shaping machine, a second linear sieve, a second conveying pump, a thickening tank, a buffer tank, a pressure filter pump, a pressure filter and a clean water tank; the mud-water collecting tank is positioned right below a fine material outlet of the fine material vibrating screen, is higher than a feeding hole of the sand washer, and is connected with the feeding hole of the sand washer through a groove; a water outlet of the sand washer is connected with an inlet of the first conveying pump through a pipeline, and a sand outlet of the sand washer is connected with the sand collecting and conveying belt; the feed inlet of the hydrocyclone is connected with the outlet of the first conveying pump through a pipeline, the water outlet at the upper part of the hydrocyclone is connected with the feed inlet of the thickening tank through a pipeline, and the sand water outlet at the bottom of the hydrocyclone is connected with the feed inlet of the first linear sieve through a pipeline; the water outlet of the first linear sieve is connected with the inlet of a first conveying pump through a pipeline, and the sand outlet of the first linear sieve is connected with a sand collecting and conveying belt; the discharge end of the sand collecting conveyer belt is connected with the feed inlet of the impact shaping machine; the feed inlet of the second linear sieve is positioned right below the discharge outlet of the impact shaping machine, and the water outlet of the second linear sieve is connected with the feed inlet of the hydrocyclone through a pipeline with a second delivery pump; a clear liquid outlet at the upper part of the thickening tank is connected with a clear water tank through a pipeline, and a slurry outlet at the bottom of the thickening tank is connected with a buffer tank through a pipeline; the buffer tank is connected with a feed inlet of the filter press through a pipeline with a pressure filter pump, a filtrate outlet of the filter press is connected with a clean water tank through a pipeline, and the clean water tank is connected with a spraying structure through a pipeline with a third conveying pump.

Wherein, the sand washer in the embodiment of the utility model is selected from a spiral sand washer, a bucket wheel sand washer or a roller sand washer.

Preferably, the sand washer in the embodiment of the utility model is a double-helix sand washer.

The filter press in the embodiment of the utility model is a quick-opening diaphragm filter press.

Specifically, the groove in the embodiment of the present invention is a U-shaped groove and the inclination angle thereof is greater than 8 °.

Preferably, a stirrer is arranged in the buffer pool in the embodiment of the utility model.

Wherein, the aperture of the screen mesh of the fine material vibrating screen in the embodiment of the utility model is 4.75 mm.

The technical scheme provided by the embodiment of the utility model has the following beneficial effects: the embodiment of the utility model provides an environment-friendly aggregate and machine-made sand combined production system, which is mainly used for producing sand by a wet method aiming at a machine-made sand system part, waste water can be recycled, the dust amount in the production process is less than that in the prior art, the noise is lower than that in the prior art, the stone powder content in the machine-made sand is low, and the cleanliness of the machine-made sand is high. In addition, the waste water treatment part of this patent has advantages such as occupation of land is little and processing speed is fast.

Drawings

FIG. 1 is a schematic block diagram of an environment-friendly aggregate and machine-made sand combined production system in an embodiment of the utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, an embodiment of the present invention provides an environment-friendly aggregate and machine-made sand combined production system, including an aggregate production system (consistent with the conventional technology) and a machine-made sand production system, where the aggregate production system includes a fine material vibrating screen (specifically, a final vibrating screen), and a water spray structure is arranged on the fine material vibrating screen. The water spraying structure can be arranged right above the fine material vibrating screen, aggregate output by a discharge outlet of the fine material vibrating screen is dried and then used, fine materials (including stone powder) are washed to the muddy water collecting tank by the water spraying structure, and the water spraying structure can be specifically composed of a plurality of spray heads. The machine-made sand production system comprises a mud-water collecting tank (used for collecting mud water), a sand washer (used for sand-water separation), a hydrocyclone (used for separating mud water from sand water), a first linear screen (used for sand-water separation and conveying), a first conveying pump, a sand collecting and conveying belt (used for conveying sand), an impact shaper, a second linear screen (used for sand-water separation and conveying), a second conveying pump, a thickening tank (used for thickening treatment, and a flocculating agent such as a conventional organic or inorganic flocculating agent and the like needs to be added in the thickening tank), a buffer tank, a filter press pump, a filter press, a clean water tank and the like. The mud-water collecting tank is positioned right below a fine material outlet of the fine material vibrating screen and used for collecting mud water flowing out of the fine material vibrating screen, is higher than a feeding hole of the sand washer, and is connected with the feeding hole of the sand washer through a groove (the mud water is higher in silt content and not suitable for pumping). The water outlet (output water) of the sand washer is connected with the inlet of the first conveying pump through a pipeline, and the sand outlet (output sand) of the sand washer is connected with the sand collecting and conveying belt. The feed inlet of the hydrocyclone is connected with the outlet of the first delivery pump through a pipeline, the water outlet (outputting muddy water) at the upper part of the hydrocyclone is connected with the feed inlet of the thickening tank through a pipeline, and the sand water outlet (outputting sand water) at the bottom of the hydrocyclone is connected with the feed inlet of the first linear sieve through a pipeline. The water outlet (output water) of the first linear sieve is connected with the inlet of the first conveying pump through a pipeline, and the sand outlet (output sand) of the first linear sieve is connected with the sand collecting and conveying belt. The discharge end of the sand collecting conveyer belt is connected with the feed inlet of the impact shaper. The feed inlet of the second linear screen is positioned right below the discharge outlet of the impact shaper and used for receiving sand output from the impact shaper, the water outlet (output water) of the second linear screen is connected with the feed inlet of the hydrocyclone through a pipeline with a second delivery pump, and the sand outlet of the second linear screen is connected to a storage yard. The clear liquid outlet (output clear water) at the upper part of the thickening tank is connected with the clear water tank through a pipeline, and the slurry outlet (output slurry) at the bottom of the thickening tank is connected with the buffer tank through a pipeline. The buffer pool is connected with the feed inlet of the filter press through a pipeline with a pressure filter pump, the filtrate outlet of the filter press is connected with a clean water pool through a pipeline, and the clean water pool is connected with a spraying structure or other water-using equipment through a pipeline with a third delivery pump.

The sand washer in the embodiment of the utility model is selected from a spiral sand washer, a bucket wheel sand washer, a roller sand washer and the like.

Specifically, the groove in the embodiment of the utility model is a U-shaped groove, and the inclination angle of the groove is more than 8 degrees so as to ensure that silt can smoothly flow.

The screen mesh diameter of the fine material vibrating screen in the embodiment of the utility model is 4.75mm, and is the same as that of the conventional machine-made sand.

In the present embodiment, valves, flow meters, and/or pumps are provided on the pipelines between the structures as needed.

In this embodiment, "first" and "second" only have a distinguishing function, and have no other special meaning.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The environment-friendly aggregate and machine-made sand combined production system comprises an aggregate production system, wherein the aggregate production system comprises a fine material vibrating screen; the fine material vibrating screen is characterized in that a water spraying structure is arranged on the fine material vibrating screen; the combined production system also comprises a machine-made sand production system, wherein the machine-made sand production system comprises a mud-water collecting tank, a sand washer, a hydrocyclone, a first linear sieve, a first delivery pump, a sand collecting and conveying belt, an impact shaping machine, a second linear sieve, a second delivery pump, a thickening tank, a buffer tank, a filter-pressing pump, a filter press and a clean water tank; the mud-water collecting tank is positioned right below a fine material outlet of the fine material vibrating screen, is higher than a feeding hole of the sand washer, and is connected with the feeding hole of the sand washer through a groove; a water outlet of the sand washer is connected with an inlet of the first conveying pump through a pipeline, and a sand outlet of the sand washer is connected with the sand collecting and conveying belt; the feed inlet of the hydrocyclone is connected with the outlet of the first conveying pump through a pipeline, the water outlet at the upper part of the hydrocyclone is connected with the feed inlet of the thickening tank through a pipeline, and the sand water outlet at the bottom of the hydrocyclone is connected with the feed inlet of the first linear sieve through a pipeline; the water outlet of the first linear sieve is connected with the inlet of a first conveying pump through a pipeline, and the sand outlet of the first linear sieve is connected with a sand collecting and conveying belt; the discharge end of the sand collecting conveyer belt is connected with the feed inlet of the impact shaping machine; the feed inlet of the second linear sieve is positioned right below the discharge outlet of the impact shaping machine, and the water outlet of the second linear sieve is connected with the feed inlet of the hydrocyclone through a pipeline with a second delivery pump; a clear liquid outlet at the upper part of the thickening tank is connected with a clear water tank through a pipeline, and a slurry outlet at the bottom of the thickening tank is connected with a buffer tank through a pipeline; the buffer tank is connected with a feed inlet of the filter press through a pipeline with a pressure filter pump, a filtrate outlet of the filter press is connected with a clean water tank through a pipeline, and the clean water tank is connected with a spraying structure through a pipeline with a third conveying pump.

2. The system for the joint production of the environment-friendly aggregate and the machine-made sand according to claim 1, wherein the sand washer is selected from a spiral sand washer, a bucket wheel sand washer or a roller sand washer.

3. The environment-friendly aggregate and machine-made sand joint production system of claim 1, wherein the sand washer is a double-helix sand washer.

4. The environment-friendly aggregate and machine-made sand joint production system according to claim 1, wherein the filter press is a quick-open membrane filter press.

5. The system for the joint production of environment-friendly aggregate and machine-made sand according to claim 1, wherein the groove is a U-shaped groove, and the inclination angle of the groove is more than 8 °.

6. The environment-friendly aggregate and machine-made sand joint production system according to claim 1, wherein a stirrer is arranged in the buffer tank.

7. The system for the joint production of the environment-friendly aggregate and the machine-made sand according to claim 1, wherein the mesh opening size of the fine material vibrating screen is 4.75 mm.