CN217474064U

CN217474064U - Mechanism sand screening system

Info

Publication number: CN217474064U
Application number: CN202220865374.XU
Authority: CN
Inventors: 林新周; 李春强; 刘向坤; 杨文轩
Original assignee: China Nuclear Construction Concrete Co ltd
Current assignee: China Nuclear Construction Concrete Co ltd
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-09-23
Anticipated expiration: 2032-04-14

Abstract

The utility model discloses a machine-made sand screening system, which comprises a vibrating screen, a collecting hopper, a powder belt conveyor, a first sand belt conveyor, a second sand belt conveyor, a third sand belt conveyor, a powder material bin, a sand material bin A and a sand material bin B; the aggregate bin is provided with a first aggregate chamber, a second aggregate chamber and a third aggregate chamber, the box body of the vibrating screen is internally provided with an upper layer of screen, a middle layer of screen and a lower layer of screen with different specifications, and the sandstone aggregate screened by the upper layer of screen enters a first sandstone belt conveyor through the first aggregate chamber and is conveyed back to the stone crusher for crushing again; the machine-made gravels screened by the middle-layer screen and the lower-layer screen enter the second and third gravels belt conveyors through the first and second collecting cavities respectively and are conveyed to a gravels warehouse A and a gravels warehouse B for storage. The utility model discloses can once only sieve out three kinds of specifications with the mechanism sand to improve screening efficiency, and concentrated the screening system who arranges, reduced equipment place area occupied and input cost.

Description

Mechanism sand screening system

Technical Field

The utility model relates to a grit preparation technical field, concretely relates to mechanism sand screening system.

Background

The manufacturing process of the machine-made sand is to repeatedly crush and then screen the crushed stones. The existing machine-made sand production line is generally provided with a set of screening devices with single specification independently, namely, the screening device on one production line can only screen sand with one specification; this not only has increased screening plant's equipment input cost to the grit processing enterprise who disposes many production lines, and has increased the area of whole production line intangibly to the screening plant who arranges alone, the finished product grit after giving the screening transports appointed feed bin and stores and brings the degree of difficulty.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a mechanism sand screening system.

The utility model adopts the technical proposal that:

a machine-made sand screening system comprises a vibrating screen connected with an outlet of a stone crusher, a powder belt conveyor arranged at the bottom of the vibrating screen, a collecting hopper arranged at the outlet of the vibrating screen and used for receiving the discharging material of the vibrating screen, a first sand belt conveyor, a second sand belt conveyor and a third sand belt conveyor arranged below the collecting hopper, and a powder bin, a sand material bin A and a sand material bin B which are respectively connected with outlets of the powder belt conveyor, the second sand belt conveyor and the third sand belt conveyor; the material collecting hopper is provided with a first material collecting cavity, a second material collecting cavity and a third material collecting cavity, screens with different specifications are arranged in the upper layer, the middle layer and the lower layer in a box body of the vibrating screen, the first material collecting cavity is provided with a first feeding hole and a first discharging hole, the first feeding hole is connected with the discharging hole of the upper layer screen, and the first discharging hole is connected with the first sand belt conveyor; the second aggregate cavity is provided with a second feed inlet and a second discharge outlet, the second feed inlet is connected with the discharge outlet of the middle-layer screen, and the second discharge outlet is connected with a second sand belt conveyor; the third aggregate cavity is provided with a third feed port and a third discharge port, the third feed port is connected with the discharge port of the lower-layer screen, and the third discharge port is connected with a third sand belt conveyor; first grit band conveyer is used for carrying back the grit aggregate that the upper screen sieve was distinguished to the stone crusher and carrying out the breakage again.

Furthermore, the vibrating screen comprises a box body, two sides of the box body are supported on the cross beam through spring seats, three layers of screen meshes are obliquely fixed in the box body in parallel, the front ends of the three layers of screen meshes exceed the front side of the box body, a driving motor is arranged on one side of the box body, a rotatable eccentric shaft is arranged in the box body through a bearing seat, two ends of the eccentric shaft extend out of the bearing seat and are sleeved with balance wheels, a belt wheel is coaxially and fixedly connected onto one balance wheel, and the belt wheel is connected with the driving motor through a belt.

Further, the diameter of the mesh of the upper layer screen is 10 mm; the diameter of the mesh of the middle layer screen is 5 mm; the mesh diameter of the lower screen is 3 mm.

Furthermore, the bottom of the box body is provided with a conical powder hopper, the upper opening of the conical powder hopper is connected with the lower-layer screen, and the lower opening is connected with a first sand belt conveyor.

Furtherly, the aggregate bin includes the rectangle box, separates into first album material chamber, second collection material chamber and third collection material chamber by two sets of baffles in the rectangle box, and baffle group includes a vertical board and an swash plate, and vertical board lower extreme is fixed on the box bottom surface, the smooth swash plate of connecting in upper end, and the other end of swash plate stretches out from the box front side and connects the screen cloth discharge gate.

Furthermore, the spring seat comprises two double-layer cylindrical spiral springs which are arranged in parallel.

The utility model has the advantages that: can once only screen out three kinds of specifications with the mechanism sand through the shale shaker that has the three-layer screen cloth, the mechanism sand of three kinds of specifications gets into different band conveyer respectively through the collecting hopper, carries respectively to appointed feed bin through band conveyer to improve screening efficiency, reduced the place area occupied and the equipment input cost of screening equipment, the screening system of arranging in concentrated, the transmission and the storage management of the grit of being convenient for.

Drawings

Fig. 1 is a schematic structural diagram of the machine-made sand screening system of the present invention.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a schematic structural view of the vibrating screen of the present invention.

Fig. 4 is a schematic structural view of the aggregate bin of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings and a preferred embodiment.

Referring to fig. 1 to 4, the present embodiment provides a machine-made sand screening system, which includes a vibrating screen 10, a collecting hopper 20, a belt conveyor and a storage bin.

The vibrating screen 10 is supported on the ground with the outlet ends of the left and right upright posts inclined downward, and the feed inlet thereof is connected with the discharge outlet of a crusher (not shown in the figure). During the concrete implementation, a crossbeam 2 is connected jointly on two stands 1 top of homonymy, and two supports of height are installed to crossbeam 2 top, respectively install a spring holder 3 on two supports of height, and the upper end of spring holder is fixed in the both sides of shale shaker 10 box, and the lower extreme is fixed on two supports of height. The beam 2 is also provided with a motor bracket, and the motor bracket is provided with a driving motor 12.

The vibrating screen 10 comprises a box body 11 formed by connecting a rear side plate, a left side plate and a right side plate, an upper layer screen 13 with the aperture of 10mm, a middle layer screen 14 with the aperture of 5mm and a lower layer screen 15 with the aperture of 3mm are sequentially stacked in the box body 11 from top to bottom, an eccentric shaft 16 is arranged between the upper layer screen 13 and the lower layer screen 14 in a penetrating manner, two ends of the eccentric shaft 16 respectively penetrate through bearing seats 161 arranged on the left side plate and the right side plate of the box body 11 to be connected with a balance wheel 17, and one end of the eccentric shaft penetrates through the balance wheel 17 to be connected with a belt wheel A18. The output shaft of the drive motor 12 is fitted with a pulley B which is connected to a pulley a18 by a belt 20. The driving motor 12 drives the eccentric shaft 16 to rotate through the belt 20, and generates an exciting force to move the vibrating screen 10.

In this embodiment, the lower ends of the upper layer screen 13, the middle layer screen 14 and the lower layer screen 15 all extend out of the front end face of the box body 11, so that the screened sand and stone can be discharged conveniently.

In the present embodiment, two double-layer cylindrical coil springs are arranged side by side in the spring seat 3. The double-layer cylindrical helical spring comprises an inner spring and an outer spring, and the wire diameter of the outer spring is larger than that of the inner spring, so that the vibrating screen 10 is more stably and elastically supported.

The aggregate bin 20 comprises a rectangular box body 21, the box body is divided into a first aggregate cavity 22, a second aggregate cavity 23 and a third aggregate cavity 24 by two groups of partition plates, and three discharge holes which are respectively communicated with the first aggregate cavity 22, the second aggregate cavity 23 and the third aggregate cavity 24 are formed in the bottom of the rectangular box body 21. The first group of baffle comprises first vertical board 26 and first swash plate 25, and the second group of baffle comprises second vertical board 28 and second swash plate 27, and first vertical board 26 is higher than second vertical board 28 and is close to the box rear side, and first vertical board 26 is connected to first swash plate 25 one end, and the other end upwards stretches out to one side and forms the upper feed inlet. The second inclined plate 27 has one end connected to the second vertical plate 28 and the other end extending obliquely upward to form a middle feed opening. A third inclined plate 29 is arranged in the first material collecting cavity 22, one end of the third inclined plate 29 is connected with a front side plate of the box body, and the other end of the third inclined plate 29 extends upwards in an inclined mode to form a lower feeding hole. The first swash plate 25, the second swash plate 27 and the third swash plate 29 are equal in width and are all greater than the width of the shale shaker screen.

The rectangular box body 21 is arranged at the outlet end of the vibrating screen 10 through a support, the first inclined plate 25 extends to the lower side of the upper layer screen 13 to receive the blanking of the upper layer screen 13, the second inclined plate 27 extends to the lower side of the middle layer screen 14 to receive the blanking of the middle layer screen 14, and the third inclined plate 29 extends to the lower side of the lower layer screen 15 to receive the blanking of the lower layer screen 15.

The belt conveyor comprises a powder belt conveyor 31, a first sand belt conveyor 32, a second sand belt conveyor 33 and a third sand belt conveyor 34.

The bins include a powder bin 41, a first grit bin 42 and a second grit bin 43. Powder feed bin 41, first grit feed bin 42 and second grit feed bin 43 set up side by side, and first grit feed bin 42 and second grit feed bin 43 are located the both sides of powder feed bin 41, and the central axis of powder feed bin 41 coincides with the central axis of powder band conveyer 31.

Powder band conveyer 31 locates the bottom of shale shaker 10, including one section horizontal segment and one section slope section, the horizontal segment is worn out from collecting hopper 20 bottom and is connected the slope section, and the other end of slope section extends to the top that connects the import of powder feed bin 41, and the grit powder that spills in 15 meshes of lower floor's screen cloth is less than 3mm in the particle diameter falls the horizontal segment of powder band conveyer 31 on, falls into powder feed bin 41 after the slope section lifting.

First grit band conveyer 32 comprises a horizontal transport belt and an inclined conveyor belt, and the horizontal transport belt is located the below of collecting hopper 20 for accept the export blanking of first collecting chamber 22, and inclined conveyor belt one end is connected horizontal transport belt, and the other end extends to the stone crusher, returns the grit aggregate that the particle size that will be sieved by upper screen 13 is greater than 10mm to the stone crusher and breaks again.

Second grit band conveyer 33 includes one section horizontal segment and one section slope section, and the below of collecting hopper 20 is located to the horizontal segment, and the horizontal segment is connected to slope section one end, the other end extends to the top of first grit feed bin 42 import, and the mechanism grit that the particle size of following middle level screen cloth 14 screening is greater than 3mm and is less than 5mm falls the horizontal segment of second grit band conveyer 33, falls into first grit feed bin 42 after the slope section lifting.

Third grit band conveyer 34 includes one section horizontal segment and one section slope section, and the below of collecting hopper 20 is located to the horizontal segment, and the horizontal segment is connected to slope section one end, the other end extends to the top of second grit feed bin 43 import, and the mechanism grit that the particle size of following lower floor's screen cloth 15 screening is greater than 5mm and little 10mm falls into third grit band conveyer 34's horizontal segment, falls into second grit feed bin 43 after the slope section lifting.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various modifications and embellishments without departing from the principle of the present invention, and these modifications and embellishments are also within the scope of the present invention.

Claims

1. A screening system for manufactured sand is characterized by comprising a vibrating screen connected with an outlet of a stone crusher, a powder belt conveyor arranged at the bottom of the vibrating screen, a collecting hopper arranged at the outlet of the vibrating screen and used for receiving discharging materials of the vibrating screen, a first sand belt conveyor, a second sand belt conveyor and a third sand belt conveyor arranged below the collecting hopper, and a powder bin, a sand material bin A and a sand material bin B which are respectively connected with outlets of the powder belt conveyor, the second sand belt conveyor and the third sand belt conveyor; the material collecting hopper is provided with a first material collecting cavity, a second material collecting cavity and a third material collecting cavity, the box body of the vibrating screen is internally provided with upper, middle and lower layers of screens with different specifications, the first material collecting cavity is provided with a first feeding hole and a first discharging hole, the first feeding hole is connected with the discharging hole of the upper layer of screen, and the first discharging hole is connected with the first sand belt conveyor; the second aggregate cavity is provided with a second feed inlet and a second discharge outlet, the second feed inlet is connected with the discharge outlet of the middle-layer screen, and the second discharge outlet is connected with a second sand belt conveyor; the third aggregate cavity is provided with a third feed port and a third discharge port, the third feed port is connected with the discharge port of the lower-layer screen, and the third discharge port is connected with a third sand belt conveyor; the first sand belt conveyor is used for conveying the sand aggregate separated by the upper-layer screening screen back to the stone crusher for crushing again.

2. The machine-made sand screening system of claim 1, wherein the vibrating screen comprises a box body, two sides of the box body are supported on the beam through spring seats, three layers of screen meshes are obliquely fixed in the box body in parallel, the front ends of the three layers of screen meshes exceed the front side of the box body, a driving motor is arranged on one side of the box body, a rotatable eccentric shaft is arranged in the box body through a bearing seat, two ends of the eccentric shaft extend out of the bearing seat and are sleeved with balance wheels, one of the balance wheels is coaxially and fixedly connected with a belt wheel, and the belt wheel is connected with the driving motor through a belt.

3. A machine-made sand screening system as claimed in claim 2, wherein the upper screen mesh has a mesh diameter of 10 mm; the diameter of the mesh of the middle layer screen is 5 mm; the mesh diameter of the lower screen is 3 mm.

4. A machine-made sand screening system according to claim 2, wherein a conical powder hopper is provided at the bottom of the box body, an upper opening of the conical powder hopper is connected with the lower screen, and a lower opening is connected with the first sand belt conveyor.

5. The machine-made sand screening system of claim 1, wherein the aggregate bin comprises a rectangular box body, the rectangular box body is divided into a first aggregate cavity, a second aggregate cavity and a third aggregate cavity by two groups of partition boards, each partition board group comprises a vertical board and an inclined board, the lower end of the vertical board is fixed on the bottom surface of the box body, the upper end of the vertical board is connected with the inclined board in a smooth mode, and the other end of the inclined board extends out of the front side of the box body to be connected with a screen discharge port.

6. A machine-made sand screening system as recited in claim 1 wherein said spring retainer includes two side-by-side double-layered cylindrical coil springs.