CN110641640A - Water-surface integrated machine-made sand floating body and sand collecting method thereof - Google Patents

Abstract

The invention relates to an integrated machine-made sand floating body on water, which comprises: the platform floating body comprises two groups of floating barrels, the two groups of floating barrels are mutually connected through connecting pieces, each floating barrel comprises a plurality of threaded pipes which are welded and connected in parallel, a deck is laid on the tops of the threaded pipes and welded with the threaded pipes, an open accommodating space is arranged between the two groups of floating barrels, and the accommodating space is a sand pool; the sand making device is arranged on a deck of the platform floating body and comprises a vibrating screen, an A-3 crusher, an A-4 sand making machine and a plurality of conveyors, wherein the vibrating screen, the A-3 crusher and the A-4 sand making machine are all fixed on the deck through bolts, the vibrating screen, the A-3 crusher and the A-4 sand making machine are connected through the conveyors, and the A-4 sand making machine is located above the sand pool.

Description

Water-surface integrated machine-made sand floating body and sand collecting method thereof

Technical Field

The invention relates to equipment for making sand on water, in particular to equipment for making machine-made sand on water.

Background

The machine-made sand is sand processed by the sand making machine and other accessory equipment, the finished product is more regular, and the sand can be processed into sand with different rules and sizes according to different process requirements, so that the daily requirement can be better met. The raw materials which can be used for artificial sand making are various, and generally, granite, basalt, cobble, limestone, calcite, andesite, rhyolite, amphibole, diabase, sandstone, tailing, slag, quartzite and the like are available. Wherein, the cobble is also a good-quality sand making raw material, and is a good choice for replacing natural sand in the aspects of strength, particle shape and color.

River sand is a non-metallic ore which is produced by long-time repeated collision and friction of natural stones under the action of water in a natural state, and has complex components, certain smoothness on the surface and high impurity content. The river sand can be widely used for various dry powder mortars after being dried and screened; such as heat-insulating mortar, bonding mortar and plastering mortar, which are mainly prepared by washing, drying and grading river sand. The strength is similar to mortar made of quartz sand. Therefore, the river sand generally has irreplaceable effects in the aspects of building and decoration.

However, the existing machine-made sand production equipment is arranged on the ground or at the river side, the machine-made sand production equipment occupies a wide area, the whole equipment is high in height, and the sand-stone separation procedure is complex. The existing platform floating body for water operation has poor wind resistance and low stability, is not enough to bear large-scale equipment to work on the platform floating body, and has higher requirement on the water level (2 meters or more).

Disclosure of Invention

The invention mainly aims to provide an integrated machine-made sand floating body on water, which is characterized in that machine-made sand production equipment is fixedly arranged on a platform floating body, and a new platform floating body is manufactured by utilizing the arrangement and combination of threaded pipes, so that the platform floating body can bear large-scale equipment. In addition, the machine-made sand production equipment is newly arranged and combined to reduce the height and the width of the machine-made sand production equipment so as to meet the requirement of the platform floating body.

In order to accomplish the above object, the present invention provides an integrated machine-made sand floating body on water, comprising: the platform floating body comprises two groups of floating barrels, the two groups of floating barrels are mutually connected through connecting pieces, each floating barrel comprises a plurality of threaded pipes which are welded and connected in parallel, a deck is laid on the tops of the threaded pipes and welded with the threaded pipes, an open accommodating space is arranged between the two groups of floating barrels, and the accommodating space is a sand pool; the sand making device is arranged on a deck of the platform floating body and comprises a vibrating screen, an A-3 crusher, an A-4 sand making machine and a plurality of conveyors, wherein the vibrating screen, the A-3 crusher and the A-4 sand making machine are all fixed on the deck through bolts, the vibrating screen, the A-3 crusher and the A-4 sand making machine are connected through the conveyors, and the A-4 sand making machine is located above the sand pool.

Preferably, the threaded pipe is internally provided with a reinforcing I-shaped steel.

Preferably, the buoy comprises three screwed pipes, a plurality of reinforcing triangular rib plates are further arranged between every two screwed pipes, and the reinforcing triangular rib plates in the same row are connected through channel steel.

Preferably, the connecting piece is H-shaped steel.

Further preferably, the sand pool comprises a connecting plate and a bottom plate, wherein the connecting plate is used for connecting two connecting pieces which are arranged side by side in the vertical direction, and the bottom plate is used for connecting two connecting pieces which are arranged side by side in the transverse direction.

Preferably, a bracket is arranged on the threaded pipe on the outer side of the buoy, the top of the bracket can be covered by the deck, and a side plate is covered on the outer side of the bracket; two ends of the threaded pipe are welded and sealed through steel plates.

Preferably, the vibrating screen comprises an A-2 vibrating screen, an A-1 vibrating screen a and an A-1 vibrating screen B, the A-2 vibrating screen is connected with an A-3 crusher through a B-1 conveyer, the A-3 crusher is connected with a C-1 transfer bin through a B-2 conveyer, and two ends of the C-1 transfer bin are connected with the A-1 vibrating screen a and the A-1 vibrating screen B through the B-3 conveyer and a B-4 conveyer respectively.

Preferably, the A-1 vibrating screen B is connected with the C-2 transfer bin through a B-7 conveyor, and the A-1 vibrating screen a is connected with the B-7 conveyor through a B-6 conveyor; the A-4 sand making machine comprises an A-4 sand making machine a and an A-4 sand making machine B, and two ends of a transfer bin in the C-2 are respectively connected with the A-4 sand making machine a and the A-4 sand making machine B through a B-8 conveyor and a B-9 conveyor.

Still further preferably, the A-2 vibrating screen comprises an upper layer vibrating screen and a lower layer vibrating screen, the upper layer vibrating screen is connected with the A-3 crusher through a B-1 conveyor, and the lower layer vibrating screen is connected with the B-7 conveyor through a B-5 conveyor.

Still more preferably, the A-4 sander a is connected to the A-3 crusher via a B-10 conveyor.

The sand collecting method of the above-water integrated machine-made sand floating body comprises the following steps:

s1: screening the conveyed sand by an A-2 vibrating screen according to the diameter of the sand;

s2: if the diameter of the sand is larger than the specified diameter, the sand is conveyed to an A-3 crusher through a B-1 conveyor for crushing; if the diameter of the sand is smaller than or equal to the specified diameter, the sand is conveyed to a B-7 conveyor through a B-5 conveyor, then is directly conveyed to a C-2 transfer bin through the B-7 conveyor, is conveyed to an A-4 sand making machine a and an A-4 sand making machine B through the shunt of the C-2 transfer bin and a B-8 conveyor and a B-9 conveyor;

s3: after the A-3 crusher crushes the sandstone, the crushed sandstone is conveyed into a C-1 transfer bin through a B-2 conveyor, then the sandstone is shunted by the C-1 transfer bin, and the sandstone is respectively conveyed to an A-1 vibrating screen a and an A-2 vibrating screen B for screening through a B-3 conveyor and a B-4 conveyor;

s4: the sand and stone screened by the A-1 vibrating screen a are conveyed to a B-7 conveyor by a B-6 conveyor, and meanwhile, the sand and stone screened by the A-1 vibrating screen B directly fall onto the B-7 conveyor;

s5: the B-7 conveyor directly conveys the gravels screened by the A-1 vibrating screen a and the A-2 vibrating screen B into a C-2 transfer bin, and the gravels are conveyed to an A-4 sand making machine a and an A-4 sand making machine B through the B-8 conveyor and the B-9 conveyor by shunting of the C-2 transfer bin;

s6: if some sand and stones are not easy to crush in the sand making process of the A-4 sand making machine a and the A-4 sand making machine B, the sand and stones which are not easy to crush are conveyed to the A-3 crusher through the B-10 conveyor to be crushed.

The invention has the beneficial effects that: according to the invention, the platform floating body is formed by arranging and combining the threaded pipes, the bottom of the platform floating body is flat, and the bottom of the traditional platform floating body is pointed, so that the water level problem is solved, and the platform floating body can float at a shallower water level. The platform floating body is manufactured by adopting the threaded pipe as the bottom, and the two ends of the threaded pipe are sealed to form a hollow state, so that the volume of the platform floating body is increased, the weight of the platform floating body is reduced, and the platform floating body can bear machine-made sand production equipment. According to the invention, the floating bodies of the installation platform of the machine-made sand production equipment are arranged and the equipment is selected, so that the machine-made sand production equipment can operate on the water surface.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a front view of the integrated machine-made sand float on water of the present invention.

Fig. 2 is a top view of the platform float of the integrated machine-made sand float on water of the present invention.

Fig. 3 is a sectional view a-a in fig. 2.

Fig. 4 is a sectional view B-B in fig. 2.

Fig. 5 is an enlarged view of a portion C in fig. 3.

Fig. 6 is an enlarged view of a portion D in fig. 3.

Fig. 7 is an internal structure view of the integrated machine-made sand floater on water of the invention with the deck and the side plates removed.

Fig. 8 is a cross-sectional view E-E of fig. 7.

Fig. 9 is a front view of fig. 7.

Fig. 10 is a schematic illustration of the laying of the conveyor belts of the machine-made sand device of the integrated machine-made sand float on water of the present invention.

Description of the reference numerals

100. A platform float;

110. a threaded pipe; 111. i-shaped steel;

120. a deck; 121. a side plate; 130. a connecting member; 140. a grid iron net;

150. a sand pool; 151. a connecting plate; 152. a base plate; 160. reinforcing the triangular rib plate;

161. channel steel; 170. a support; 180. a floating floor;

200. machine-made sand equipment; 201. a-1 vibrating screen a; 202. a-2 vibrating screen b;

203. a-1 vibrating screen; 204. a-3, a crusher; 205. a-4, making a sand machine a;

206. a-4, making a sand machine b;

211. b-1, a conveyor belt; 212. b-2, a conveyor belt; 213. b-3, a conveyor belt;

214. b-4, a conveyor belt; 215. b-5, a conveyor belt; 216. b-6, a conveyor belt;

217. b-7, a conveyor belt; 218. b-8, conveying a belt; 219. b-9 conveyor belt;

220. b-10, conveying a belt;

221. a B-1 conveyor; 222. a B-2 conveyor; 223. a B-3 conveyor;

225. b-5 a conveyor; 226. b-6 conveyor;

227. a B-7 conveyor; 228. b-8 conveyor; 230. b-10 a conveyor;

231. c-1 transferring a material barrel; 232. c-2 transfer charging bucket.

Detailed Description

The technical solution in the embodiments of the present invention is clearly and completely described below with reference to the drawings in the embodiments of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

As shown in fig. 1, the embodiment provides an integrated machine-made sand floating body on water, which includes a platform floating body 100 and a machine-made sand device 200, wherein the machine-made sand device 200 is fixedly installed on the platform floating body 100.

As shown in fig. 4, the platform floating body 100 includes two sets of pontoons, the two sets of pontoons are connected to each other by a plurality of connecting members 130, preferably, the connecting members 130 are H-shaped steel (in this embodiment, the type of the H-shaped steel is 250 × 250 mm), wherein, every two connecting members 130 arranged in the vertical direction (i.e., in the Z-axis direction) are one set, and the two sets of pontoons are welded together by the plurality of sets of connecting members 130. The buoy comprises a plurality of threaded pipes 110 (in this embodiment, the threaded pipes 110 are rolled from sheet material, the diameter of the threaded pipes 110 is 1625mm, the length is 48 meters, and the thickness of the sheet material is 8 mm) welded together in parallel in the transverse direction (the Y-axis direction in the horizontal direction), and preferably, in this embodiment, three threaded pipes 110 are welded together in parallel. The deck 120 is laid on the top of the screwed pipe 110 (in this embodiment, the deck 120 is a tiled steel plate, and 6mm thick is adopted), the floating bottom plate 180 is arranged on the bottom of the screwed pipe 110 (in this embodiment, the floating bottom plate 180 is made of an 8mm thick steel plate), and both the deck 120 and the floating bottom plate 180 are welded to the screwed pipe 110. As shown in fig. 2, 3 and 6, an open accommodating space is provided between two sets of buoys, the accommodating space is a sand pool 150, the sand pool 150 is used for storing sand, wherein two adjacent sets of connecting members 130 form a keel of the sand pool 150, the connecting members 130 in the two sets are welded together by using a connecting plate 151, that is, the connecting plate 151 connects two connecting members 130 which are arranged side by side in the vertical direction, and a bottom plate 152 is used as a bottom, that is, the bottom plate 152 connects the bottoms of the two sets of connecting members 130, that is, the bottom plate 152 is used for connecting two connecting members 130 which are arranged side by side in the transverse direction, in this embodiment, the connecting plate 151 and the bottom plate 152 are both made of steel plates with a thickness of 10mm, thereby.

In addition, as shown in fig. 4 and 8, in order to reinforce the compressive strength of the threaded pipe 110 and prevent the threaded pipe 110 from deforming under stress, in the present embodiment, an i-beam 111 (preferably, the type of the i-beam 111 is 250 × 100 mm) is welded to the bottom of the threaded pipe 110, and the i-beam 111 is welded to the joint of the steel plates during the process of rolling the threaded pipe 110 from the steel plates, so that the i-beam 111 is integrally connected with the threaded pipe 110. In order to reinforce the connection between the threaded pipes 110 and prevent the threaded pipes 110 from being separated from each other, a reinforcing triangular rib plate 160 is welded to a gap between adjacent threaded pipes 110, wherein a plurality of reinforcing triangular rib plates 160 arranged in a longitudinal direction (X-axis direction in the horizontal direction) are connected in series by one channel steel 161, and then the deck 120 covers the reinforcing triangular rib plates 160 and the tops of the threaded pipes 110. Because the threaded pipe 110 is a round pipe, in order to increase the area of the deck 120 and expand the width of the deck 120, a bracket 170 is mounted on the upper half part of the threaded pipe 110, the bracket 170 is arranged on the threaded pipe 110 on the outermost side of each group of buoys, the cross bars and the vertical bars of the bracket 170 are respectively welded with the threaded pipe 110, the cross bars are vertically connected with the vertical bars, and the cross bars are tangent to the top of the threaded pipe 110. The bracket 170 is covered at the outer side with a side plate 121, and the upper portion of the bracket 170 is covered by the deck 120.

In the present embodiment, plate members (not shown) are sealed and welded to both ends of the threaded pipe 110, and the plate members are steel plates having a thickness of 10mm, so that the plate members prevent river water from flowing into the threaded pipe 110.

In the present embodiment, as shown in fig. 1, the machine-made sand apparatus 200 includes a plurality of shakers, an a-3 crusher 204, an a-4 sand maker, and a plurality of conveyors, wherein the shakers, the a-3 crusher 204, and the a-4 sand maker are all fixed on the deck 120 by bolts, and wherein the a-4 sand maker is located above the sand pool 150. In this embodiment, the sand pool 150 has about 40 cubic meters, a sand inlet pipe is arranged above the sand pool 150, and the machine-made sand produced by the a-4 sand making machine enters the sand pool 150 through the gold sand pipe. Still be equipped with the inlet channel (not shown in the figure) in husky pond 150, the inlet channel is connected with circulating water pump (circulating water pump fixed mounting is on the platform body, not shown in the figure), circulating water pump passes through the inlet channel and draws river water into husky pond 150 in, like this, the sand in husky pond 150 is in the same place with water mixing, when taking out the sand in husky pond 150 of two numbers group of pump (take out husky pump two numbers group fixed mounting on platform body 100), take river water and sand out jointly, just so avoided the sand to block up in the pipeline of going out the sand (if the pump of taking out the sand only extracts simple sand, then the sand is very easy to block up in the pipeline of going out the sand).

Specifically, as shown in fig. 1 and 10, the vibrating screen includes an a-2 vibrating screen 203, an a-1 vibrating screen a201, and an a-1 vibrating screen B202, the a-2 vibrating screen 203 is connected to an a-3 crusher 204 through a B-1 conveyor belt 211 driven by a B-1 conveyor 221, the a-3 crusher 204 is connected to a C-1 transfer bin 231 through a B-2 conveyor belt 212 driven by a B-2 conveyor 222, and discharge ports at both ends of the C-1 transfer bin 231 are connected to the a-1 vibrating screen a201 and the a-1 vibrating screen B202 through a B-3 conveyor belt 213 driven by a B-3 conveyor 223 and a B-4 conveyor belt 214 driven by a B-4 conveyor (not shown).

In this embodiment, as shown in fig. 1 and 10, a-1 vibrating screen B202 is connected to a C-2 transfer bin 232 through a B-7 conveyor belt 217 driven by a B-7 conveyor 227, and a-1 vibrating screen a201 is connected to the B-7 conveyor belt 217 driven by the B-7 conveyor 227 through a B-6 conveyor belt 216 driven by a B-6 conveyor 226; the A-4 sand making machine comprises an A-4 sand making machine a205 and an A-4 sand making machine B206, and discharge ports at two ends of a transfer bin 232 in the C-2 are respectively connected with the A-4 sand making machine a205 and the A-4 sand making machine B206 through a B-8 conveying belt driven by a B-8 conveyor 228 and a B-9 conveying belt driven by a B-9 conveyor (not shown in the figure).

In addition, in this embodiment, as shown in fig. 1 and 10, the a-2 vibrating screen 203 includes an upper layer vibrating screen and a lower layer vibrating screen, that is, the a-2 vibrating screen 203 is a double-layer vibrating screen, the upper layer vibrating screen is connected to the a-3 crusher 204 through a B-1 conveyor belt 211 driven by a B-1 conveyor 221, and the lower layer vibrating screen is connected to a B-7 conveyor belt 217 driven by a B-7 conveyor 227 through a B-5 conveyor belt 215 driven by a B-5 conveyor 225. Further, A-4 sander a205 and A-4 sander B206 are connected to A-3 crusher 204 by a B-10 belt 220 carried by a B-10 conveyor 230. If the sand is not easy to be crushed in the sand making process, the sand which is not easy to be crushed is conveyed to the A-3 crusher again through the B-10 conveyor belt 220 for crushing.

The specific work flow of the machine-made sand equipment of the embodiment is as follows:

firstly, a group I sand pump (group I sand pump is fixedly installed on a platform floating body, not shown in the figure) conveys the cobble pumped from the river bottom to an A-2 vibrating screen 203 through a sand pumping pipeline, and the cobble is screened by the A-2 vibrating screen 203:

when the diameter of the cobble is smaller than the diameter of the screening (in the embodiment, the distinguishing diameter is set to be 4 mm), the cobble directly falls into the lower layer vibrating screen from the upper layer vibrating screen, then falls onto the B-5 conveying belt 215 through the lower layer vibrating screen, is conveyed onto the B-7 conveying belt 217 from the B-5 conveying belt 215, is conveyed into the C-2 transfer barrel 232 through the B-7 conveying belt 217, is conveyed into the A-4 sand making machine a205 or the A-4 sand making machine B206 through the B-8 conveying belt or the B-9 conveying belt from the C-2 transfer barrel for sand making, falls into a sand pool after the sand making is finished, and is transferred onto a sand transporting ship by transfer equipment;

when the diameter of the cobble is larger than the screened diameter, the cobble falls onto a B-1 conveyor belt 211 from an upper layer of a vibrating screen 203 of an A-2, is conveyed into an A-3 crusher 204 from the B-1 conveyor belt 211, is conveyed into a C-1 transfer bucket 231 through a B-2 conveyor belt 212 after being crushed by the A-3 crusher 204, is conveyed into an A-1 vibrating screen a202 and an A-1 vibrating screen B201 through a B-3 conveyor belt 213 and a B-4 conveyor belt 214 respectively by the C-1 transfer bucket 231, is screened by the A-1 vibrating screen a202 and an A-1 vibrating screen B201, wherein the cobble in the A-1 vibrating screen a202 is conveyed onto a B-7 conveyor belt 217 through a B-6 conveyor belt, the cobble in the A-1 vibrating screen B201 directly falls onto a B-7 conveyor belt 217, then, the cobbles are uniformly conveyed into a C-2 transfer barrel 232 by a B-7 conveyor belt 217, then the cobbles are conveyed into an A-4 sand making machine a205 or an A-4 sand making machine B206 by the C-2 transfer barrel through a B-8 conveyor belt or a B-9 conveyor belt to be made into sand, the sand which is made by the sand making machine falls into a sand pool, and then the sand in the sand pool is transferred onto a sand transporting ship by transfer equipment.

In addition, in order to control the overall height of the machine-made sand production equipment within 6500mm, the head height of the conveyor does not exceed 800mm, and rollers with the diameter of 630 are adopted.

In this embodiment, pass through the body setting with mechanism sand production facility on the river, through the height of effectual reduction mechanism sand production facility for it can adapt to the surface of water operation, reduces mechanism sand production facility's area through the permutation and combination of conveyer, makes it install on the body, makes mechanism sand production facility operation on the river, directly produces mechanism sand. The machine-made sand produced by the cobbles can be processed into sands with different rules and sizes according to different process requirements, and daily requirements can be further met. The machine-made sand produced by using the cobbles is also a good-quality sand making raw material, and is a good choice for replacing natural sand in the aspects of strength, particle shape and color.

It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides an integration machine-made sand body on water which characterized in that includes:

the floating structure comprises a platform floating body and a floating body, wherein the platform floating body comprises two groups of floating barrels, the two groups of floating barrels are connected with each other through connecting pieces, each floating barrel comprises a plurality of threaded pipes which are welded in parallel, a deck is laid on the tops of the threaded pipes, the deck is welded with the threaded pipes, and an open sand pool is arranged between the two groups of floating barrels;

the sand making device comprises a vibrating screen, an A-3 crusher, an A-4 sand making machine and a plurality of conveyors, wherein the vibrating screen, the A-3 crusher and the A-4 sand making machine are all fixed on the deck, the vibrating screen, the A-3 crusher and the A-4 sand making machine are connected through the conveyors, and the A-4 sand making machine is located above the sand pool.

2. The integrated machine-made sand floating body on water as claimed in claim 1, wherein a reinforcing I-steel is arranged in the threaded pipe.

3. The integrated machine-made sand floating body on water as claimed in claim 1, wherein the floating barrel comprises three threaded pipes, a plurality of reinforcing triangular rib plates are arranged between every two threaded pipes, and the reinforcing triangular rib plates in the same vertical direction are connected through channel steel.

4. The integrated machine-made sand float on water of claim 1, wherein the connecting piece is H-shaped steel;

the sand pond includes connecting plate and bottom plate, wherein, the connecting plate is used for connecting two connecting pieces that vertical direction is side by side, the bottom plate is used for connecting two horizontal connecting pieces side by side.

5. The integrated machine-made sand floating body on water as claimed in claim 1, wherein a bracket is arranged on the threaded pipe outside the floating barrel, the deck can cover the top of the bracket, and a side plate is covered outside the bracket; and two ends of the threaded pipe are welded and sealed through steel plates.

6. The integrated machine-made sand floating body on water as claimed in claim 1, wherein the vibrating screen comprises an A-2 vibrating screen, an A-1 vibrating screen a and an A-1 vibrating screen B, the A-2 vibrating screen is connected with the A-3 crusher through a B-1 conveyer, the A-3 crusher is connected with a C-1 transfer bin through a B-2 conveyer, and two ends of the C-1 transfer bin are connected with the A-1 vibrating screen a and the A-1 vibrating screen B through a B-3 conveyer and a B-4 conveyer respectively.

7. The integrated machine-made sand floating body on water as claimed in claim 6, wherein the a-1 vibrating screen B is connected with a C-2 transfer bin through a B-7 conveyor, and the a-1 vibrating screen a is connected with the B-7 conveyor through a B-6 conveyor; the A-4 sand making machine comprises an A-4 sand making machine a and an A-4 sand making machine B, and two ends of the C-2 transfer bin are respectively connected with the A-4 sand making machine a and the A-4 sand making machine B through a B-8 conveyor and a B-9 conveyor.

8. The integrated machine-made sand float on water of claim 7, wherein the a-2 shaker comprises an upper layer shaker connected to the a-3 crusher by a B-1 conveyor and a lower layer shaker connected to the B-7 conveyor by a B-5 conveyor.

9. The integrated machine-made sand floating body on water of claim 8, wherein the a-4 sand making machine a and the a-4 sand making machine B are connected with the a-3 crusher through a B-10 conveyor.

10. The sand production method of the integrated machine-made sand float on water of claim 9, characterized by comprising the following steps:

s1: screening the conveyed sand by an A-2 vibrating screen according to the diameter of the sand;

s2: if the diameter of the sand is larger than the specified diameter, the sand is conveyed to an A-3 crusher through a B-1 conveyor for crushing; if the diameter of the sand is smaller than or equal to the specified diameter, the sand is conveyed to a B-7 conveyor through a B-5 conveyor, then is directly conveyed to a C-2 transfer bin through the B-7 conveyor, is conveyed to an A-4 sand making machine a and an A-4 sand making machine B through the shunt of the C-2 transfer bin and a B-8 conveyor and a B-9 conveyor;

s3: after the A-3 crusher crushes the sandstone, the crushed sandstone is conveyed into a C-1 transfer bin through a B-2 conveyor, then the sandstone is shunted by the C-1 transfer bin, and the sandstone is respectively conveyed to an A-1 vibrating screen a and an A-2 vibrating screen B for screening through a B-3 conveyor and a B-4 conveyor;

s4: the sand and stone screened by the A-1 vibrating screen a are conveyed to a B-7 conveyor by a B-6 conveyor, and meanwhile, the sand and stone screened by the A-1 vibrating screen B directly fall onto the B-7 conveyor;

s5: the B-7 conveyor directly conveys the gravels screened by the A-1 vibrating screen a and the A-2 vibrating screen B into a C-2 transfer bin, and the gravels are conveyed to an A-4 sand making machine a and an A-4 sand making machine B through the B-8 conveyor and the B-9 conveyor by shunting of the C-2 transfer bin;

s6: if some sand and stones are not easy to crush in the sand making process of the A-4 sand making machine a and the A-4 sand making machine B, the sand and stones which are not easy to crush are conveyed to the A-3 crusher through the B-10 conveyor to be crushed.

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