CN213914889U - Sand screening machine of multi-stage screening - Google Patents

Abstract

The utility model belongs to the technical field of screening sand machine and specifically relates to a screening sand machine of multi-stage screening is related to, its technical scheme main points are: the device comprises a rack, a rotating motor, a first roller and a second roller, wherein the second roller is sleeved on the first roller; the peripheral surfaces of the first roller and the second roller are provided with meshes, and the mesh size of the second roller is smaller than that of the first roller; the rotating motor is arranged on the rack and can drive the first roller and the second roller to rotate in a fixed shaft manner; the sand screening device achieves the purpose of screening sand with impurities such as stones in a multi-stage mode to improve the screening efficiency of the sand.

Description

Sand screening machine of multi-stage screening

Technical Field

The application relates to the field of sand screening machines, in particular to a sand screening machine with multi-stage screening.

Background

In the construction, need screen the sand, screen impurity such as the stone with different sizes wherein in order to improve the quality of sand, and then guarantee going on of follow-up work from the sand.

The roller sand screening machine recorded in the related technology comprises a collecting box and a roller, wherein the roller is uniformly provided with a plurality of meshes on the peripheral surface of the roller, and the collecting box is arranged below the roller; in pouring the sand that will have impurity such as stone into the cylinder, the sand will carry impurity such as stone and roll in the cylinder is inside, and at this in-process, the mesh that the sand can follow on the cylinder passes and drops to the collecting box, and impurity such as the great stone of volume can't pass the mesh on the cylinder, and then impurity such as sand and stone separates, realizes the screening to the sand.

In view of the above-mentioned related art solutions, the inventors found that: the cylinder only has one, and the size of mesh only has one promptly, only can once sieve the sand through this cylinder, and consequently the mesh diameter on the cylinder is less to make most of impurity and sand separation, a large amount of impurity can be piled up unavoidably to cylinder inside, and a large amount of impurity can block up partial mesh and then obstruct the sand and pass through the mesh, and the sand can't flow through the mesh fast and smoothly, and the screening efficiency of sand is lower.

SUMMERY OF THE UTILITY MODEL

In order to realize carrying out multistage screening to the sand that has impurity such as stone to improve the screening efficiency of sand, this application provides a screening sand machine of multistage screening.

The application provides a screening sand machine of multistage screening adopts following technical scheme:

a sand screening machine for multi-stage screening comprises a rack, a rotating motor, a first roller and a second roller, wherein the second roller is sleeved on the first roller; the peripheral surfaces of the first roller and the second roller are provided with meshes, and the mesh size of the second roller is smaller than that of the first roller; the rotating motor is arranged on the rack and can drive the first roller and the second roller to rotate in a fixed shaft mode.

By adopting the technical scheme, the rotating motor is started, and the rotating motor drives the first roller and the second roller to rotate around the fixed shaft; when sand with impurities such as broken stones enters the first roller, the first roller drives the broken stones and the sand to roll in the first roller; broken stones with larger volume can not enter the second mesh through the meshes of the first roller, and then the broken stones with larger volume are separated from sand and broken stones with smaller volume; broken stones and sand with small volume enter the second roller, the broken stones with small volume cannot pass through meshes of the second roller, and the sand is further separated from the broken stones with small volume; so far, screening sand and most of impurities step by step; at this in-process, impurity in the sand divides twice and sand separation, and at this moment, accumulational impurity is less when only being suitable for a cylinder in first cylinder and the second cylinder respectively, has reduced impurity and has hindered the possibility that the sand passes through the mesh, and then makes passing through the mesh screening that the sand can be faster go out, has improved the efficiency that the sand was sieved.

Preferably, the output shaft of the rotating motor is connected with a transmission shaft; two ends of the first roller are provided with first supporting rings; be connected with a plurality of circumference evenly distributed's first bracing piece on the interior disc of first bracing ring, the one end that first bracing piece was kept away from first bracing ring is connected with the transmission shaft global.

By adopting the technical scheme, the rotating motor is started, and an output shaft electric transmission shaft of the rotating motor rotates around the axis of the rotating motor as a fixed shaft; the transmission shaft drives first bracing piece and first supporting ring and rotates around the transmission shaft axis dead axle, and first supporting ring can drive first cylinder dead axle on the one hand and rotate, and on the other hand plays the circumference supporting role to first cylinder.

Preferably, the two ends of the second drum are provided with second support rings, the inner circumferential surface of each second support ring is connected with a plurality of second support rods which are uniformly distributed in the circumferential direction, and one ends of the second support rods, which are far away from the second support rings, are connected with the outer circumferential surface of the first support ring.

Through adopting above-mentioned technical scheme, the second bracing piece couples together first support ring and second support ring, and when first support ring drove first cylinder dead axle and rotates, first support ring can drive second support ring and the synchronous rotation of second cylinder through the second bracing piece again.

Preferably, a first conveyor belt for conveying sand is arranged below the second roller; a sliding stone plate used for guiding broken stones out is arranged below the port, close to the rotating motor, of the second roller, and the sliding stone plate is fixedly connected with the rack.

By adopting the technical scheme, when the screened sand is screened out through the meshes of the second roller, the first conveyor belt can output the sand to a place which can be contacted by workers and used by the workers; the setting of slabstone is in the below of second cylinder port, and after first cylinder and second cylinder separated impurity such as rubble from the sand, because first cylinder and the slope of second cylinder set up, impurity such as rubble rolls along first cylinder and second cylinder through the dead weight and falls on the slabstone to through the whole equipment of slabstone slip.

Preferably, a port of the first roller, which is far away from the rotating motor, is connected with a material guide pipe, and the material guide pipe is connected with a first feeding hopper with an upward opening.

Through adopting above-mentioned technical scheme, the sand that will wait to sieve is added from first loading hopper and is added inside the first cylinder through the passage and sieve.

Preferably, the device also comprises a screen conveyer belt and a second conveyer belt which are arranged on one side of the first feeding hopper; one end of the screen conveyer belt far away from the first feeding hopper and one end of the second conveyer belt far away from the first feeding hopper are both inclined upwards; the mesh diameter of the screen conveyer belt is larger than that of the first roller, the second conveyer belt is arranged below the screen conveyer belt, and one end, far away from the ground, of the second conveyer belt is positioned above the first charging hopper; a second feeding hopper is arranged above one end of the screen conveyer belt close to the ground.

By adopting the technical scheme, the sand to be screened, which is provided with the stones with larger volume and the gravels with smaller volume, is added through the second feeding hopper, the sand to be screened falls onto the screen conveyer belt, and the stones with larger volume cannot fall onto the second conveyer belt through the meshes of the screen conveyer belt due to the meshes of the screen conveyer belt, so that the stones with larger volume are separated from the sand, and the gravels and the sand enter the first feeding hopper through the second conveyer belt for screening; therefore, the primary screening of the sand is completed in the process of adding the sand to be screened into the first feeding hopper, and the screening efficiency of the sand is improved; in addition, inside the unable first cylinder of entering of the great stone of volume and second cylinder, reduced to a certain extent between stone and the first cylinder the noise that the collision and produced to the mesh that has reduced the stone and plugged up first cylinder hinders the possibility that the sand flows.

Preferably, a buffer plate is arranged below the second feeding hopper, and the bottom surface of the buffer plate is connected with a buffer spring which is vertically arranged.

Through adopting above-mentioned technical scheme, when the sand that has the great stone of volume in the present generation falls the buffer board through the second loading hopper, buffer spring can prolong the time that the stone momentum changes to reduce the effort of stone to the screen cloth conveyer belt, play the cushioning effect, reduce the damage to the screen cloth conveyer belt, and reduced the noise that this in-process produced.

Preferably, the end of the screen conveyer belt far away from the ground is provided with a stone guide slideway for guiding out the stone.

Through adopting above-mentioned technical scheme, separate when the great stone of volume and sand, the stone is conveyed on leading the stone slide on the screen cloth conveyer belt to slide to ground through leading the stone slide.

Preferably, roller frames are arranged on two sides of the second conveyor belt, and a plurality of groups of roller frames are arranged and distributed along the conveying direction of the second conveyor belt; the roller frame is arranged below the screen conveyer belt; the roller frame is provided with a roller, the axis of the roller is perpendicular to the conveying direction of the second conveying belt, a gap is formed between the circumferential surface of the roller and the surface of the second conveying belt, and the height of the gap is smaller than the mesh diameter of the screen conveying belt and larger than the mesh diameter of the first roller.

By adopting the technical scheme, due to factors such as moisture, the sand can be caked, the caked sand is larger than the sand in volume, and if the caked sand directly enters the first roller and the second roller to participate in screening, the waste of the sand in the caked sand is caused; the caking is soft relatively, is easily crushed, when falling on the second conveyer belt and when wanting to pass through the space between roller and the second conveyer belt, the roller can be ground the caking and then become the sand grain and mix with the sand of waiting to sieve, has reduced the waste to the sand to a certain extent.

In summary, the present application has the following technical effects:

1. through the arrangement of the screen conveyer belt, the first roller and the second roller, impurities in the sand are screened out for multiple times, so that the impurities left in the same roller are less, the amount of the impurities accumulated in the same roller is reduced, the possibility that the impurities block the sand to flow out through meshes is reduced, the sand can flow out more smoothly and quickly, and the screening efficiency of the sand is improved;

2. through having set up second conveyer belt and roller, can pulverize the caking in the sand, make the sand in the caking can be collected and utilize, reduced the waste to the sand to a certain extent.

Drawings

Fig. 1 is an overall structural view of a sand sieving machine in an embodiment of the present application;

fig. 2 is a structural view of a roller screen mechanism of a sand screening machine in the embodiment of the present application.

In the figure, 1, a frame; 2. a roller screen mechanism; 21. rotating the motor; 22. a drive shaft; 23. a first drum; 231. a first support ring; 232. a first support bar; 24. a second drum; 241. a second support ring; 242. a second support bar; 3. a feeding mechanism; 31. a second hopper; 32. a buffer plate; 33. a buffer spring; 34. a screen conveyor; 35. a stone guide chute; 36. a second conveyor belt; 37. a roller frame; 38. a roller; 4. a first hopper; 41. a material guide pipe; 5. a skite plate; 6. a first conveyor belt.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

Referring to fig. 1, the present application provides a multi-stage screening sand screening machine, which includes a frame 1, a feeding mechanism 3 and a roller screen mechanism 2; the feeding mechanism 3 and the roller screen mechanism 2 are both arranged on the frame 1; adding sand with impurities into a feeding mechanism 3, wherein the feeding mechanism 3 can separate stones with larger volume in the sand from the sand and send the primarily screened sand into a roller screen mechanism 2, and the primarily screened sand also contains broken stones with smaller volume than the stones; the sand with the crushed stones enters the roller screen mechanism 2, and the roller screen mechanism 2 can screen the crushed stones with larger volume and the crushed stones with smaller volume in the sand twice, namely, the sand is screened twice and screened three times; through tertiary screening totally, the sand has reduced the mesh on stone and rubble jam rotary screen and then has hindered the possibility that the sand passes through the mesh output, and the sand can be more smooth and easy and quick and impurity separation, and then has improved the screening efficiency of sand.

Referring to fig. 1 and 2, the feeding mechanism 3 includes a second hopper 31 vertically disposed, and the second hopper 31 is fixedly disposed on the frame 1; a screen conveyer belt 34 is arranged below the second hopper 31, and the screen conveyer belt 34 is fixed on the frame 1; the conveying surface of the screen conveying belt 34 is provided with meshes capable of separating stones with large volumes from sand; a stone guide slideway 35 is arranged at the downstream of the screen conveyer 34, and the stone guide slideway 35 is obliquely arranged from the position close to the screen conveyer 34 to the position close to the ground and extends to the side far away from the screen conveyer 34; a second conveyor belt 36 fixed on the frame 1 is arranged right below the screen conveyor belt 34; one end of the screen conveyor 34 close to the second hopper 31 and one end of the second conveyor 36 close to the second hopper 31 are both inclined downwards, and the conveying direction of the screen conveyor 34 is parallel to that of the second conveyor 36; the roller screen mechanism 2 is arranged below the output end of the second conveyor belt 36; adding sand with large-volume stones to the screen conveyer belt 34 through the second feeding hopper 31, separating the large-volume stones from the sand by the screen conveyer belt 34, and conveying the stones to the stone guide slideway 35 by the screen conveyer belt 34 and sliding the stones to the ground through the stone guide slideway 35; the sand, still with crushed stones, falls through the mesh of the screen conveyor 34 onto a second conveyor belt 36, which second conveyor belt 36 conveys the sand to the inside of the roller screen mechanism 2 for further screening.

Referring to fig. 1, roller frames 37 are provided in pairs on both sides of the second conveyor belt 36, and the roller frames 37 are provided below the mesh conveyor belt 34; the roller frames 37 are provided with a plurality of groups and are uniformly distributed along the conveying direction of the second conveyor belt 36; a roller 38 with the axis parallel to the surface of the second conveyor belt 36 is arranged between the pair of roller frames 37, and two ends of the roller 38 are rotatably connected with the roller frames 37; a gap is formed between the roller 38 and the second conveyor belt 36, the height of the gap being less than the diameter of the mesh on the screen conveyor belt 34; the sand often becomes caked due to moisture or other causes, the caked sand can be easily crushed, when the sand falls onto the second conveyor belt 36, the caked sand is brought into the gap between the roller 38 and the second conveyor belt 36 by the second conveyor belt 36 and crushed by the roller 38, and the caked sand becomes finer sand and is fed into the roller screen mechanism 2 through the second conveyor belt 36, and the waste of the caked sand is reduced to a certain extent.

Referring to fig. 1, a buffer plate 32 is disposed between the second hopper 31 and the end of the screen conveyor 34 close to the ground, and the end of the buffer plate 32 far from the downstream of the screen conveyor 34 is inclined toward the second hopper 31; the lower surface of the buffer plate 32 is connected with a plurality of buffer springs 33, and one ends of the buffer springs 33 far away from the buffer plate 32 are fixed on the frame 1; when no sand falls on the cushion plate 32, the cushion spring 33 is slightly compressed by the cushion plate 32; when the sand with stones falls on the buffer plate 32, the buffer spring 33 prolongs the time of the momentum change of the stones, thereby reducing the acting force of the stones on the screen conveyer belt 34, and playing a role of buffering to reduce the damage of the stones on the screen conveyer belt 34.

Referring to fig. 1 and 2, the roller screen mechanism 2 includes a first drum 23 and a first hopper 4, and the diameter of mesh on the circumferential surface of the first drum 23 is smaller than the height of a gap formed between a roller 38 and a second conveyor belt 36; the first drum 23 is disposed inclined from near the upstream of the second conveyor belt 36 to near the ground; the first hopper 4 is arranged below one end, far away from the ground, of the second conveyor belt 36 and fixed on the rack 1, the lower end of the first hopper 4 is connected with a material guide pipe 41, and the material guide pipe 41 extends towards the first roller 23 and is communicated with the interior of the first roller 23; two ends of the first roller 23 are provided with first supporting rings 231, and the side surfaces of the two first supporting rings 231 close to each other are fixedly connected with two ends of the first roller 23; three first support rods 232 are radially fixed on the inner circumferential surface of the first support ring 231, and the first support rods 232 are uniformly distributed along the circumferential direction of the first support ring 231; the transmission shaft 22 is coaxially arranged in the first roller 23, and one end of the first support rod 232, which is far away from the first support ring 231, is fixedly connected with the circumferential surface of the transmission shaft 22; the transmission shaft 22 penetrates through the whole length of the first roller 23, and one end of the transmission shaft close to the ground is provided with a rotating motor 21 fixed on the frame 1; inside sand with rubble added first cylinder 23 through first loading hopper 4, the mesh on first cylinder 23 can hinder the great rubble of volume to pass through, and then makes the great rubble of volume and sand separation, and sand flows through the mesh of first cylinder 23 with the less rubble of volume, and then realizes the secondary screening to the sand.

Referring to fig. 2, a second drum 24 is coaxially disposed outside the first drum 23, and the diameter of the mesh on the circumferential surface of the second drum 24 is smaller than that of the mesh on the circumferential surface of the first drum 23; two ends of the second drum 24 are provided with second support rings 241, and the side surfaces of the two second support rings 241 close to each other are fixedly connected with two ends of the second drum 24; three second support bars 242 are radially fixed on the inner circumferential surface of the second support ring 241, and the second support bars 242 are uniformly distributed along the circumferential direction of the second support ring 241; one end of the second support bar 242 away from the second support ring 241 is fixedly connected with the outer circumferential surface of the first support ring 231; starting the rotating motor 21, and driving the first roller 23 and the second roller 24 to rotate coaxially by the transmission shaft 22; inside the sand that has the less rubble of volume was through entering into second cylinder 24, the less rubble of volume can't pass through the mesh of second cylinder 24, and sand flows out through the mesh of second cylinder 24, and then screens out the less rubble of volume from the sand, accomplishes the cubic screening to the sand so far.

Referring to fig. 2, a sliding plate 5 fixed on the frame 1 is arranged on one side of the second roller 24 close to the ground, and the longitudinal section of the sliding plate 5 is in a circular arc shape with the same radius as that of the second roller 24; the sliding plate 5 is obliquely arranged from the position close to the second roller 24 to the position close to the ground, and one end, far away from the ground, of the sliding plate 5 is arranged below one end, close to the ground, of the second roller 24; the large-volume crushed stones screened by the first drum 23 and the small-volume crushed stones screened by the second drum 24 both roll down onto the slide plate 5 by their own weight and slide down onto the ground by the slide plate 5.

Referring to fig. 2, a first conveyor belt 6 is disposed directly below the first drum 23, and a conveying direction of the first conveyor belt 6 is a direction from close to far from the rotating motor 21; the sand flowing from the inside of the second drum 24 falls onto the first conveyor belt 6 and is output through the first conveyor belt 6.

To sum up, the application process of this application is: adding sand with impurities through a first feeding hopper 4, dropping the sand with impurities onto a buffer plate 32 and further onto a screen conveyer belt 34, and screening out larger-volume stones in the sand by the screen conveyer belt 34; the crushed stone and sand fall through the mesh of the screen conveyor 34 onto the second conveyor 36; the second conveyor belt 36 adds the sand with the crushed stones into the first roller 23 through the first feeding hopper 4, the first roller 23 screens out the crushed stones with larger volume in the sand, and the crushed stones with smaller volume and the sand fall onto the second roller 24 through meshes on the first roller 23; the second roller 24 screens out the broken stones with smaller volume in the sand, the sand falls onto the first conveyor belt 6 through the meshes on the second roller 24, and the first conveyor belt 6 outputs the sand; the crushed stones screened off in the first drum 23 and the second drum 24 roll down on the slide plate 5 by their own weight and are guided out through the slide plate 5.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims (9)

1. The utility model provides a screening sand machine of multistage screening which characterized in that: the device comprises a rack (1), a rotating motor (21), a first roller (23) and a second roller (24), wherein the first roller (23) is sleeved with the second roller (24); the peripheral surfaces of the first roller (23) and the second roller (24) are provided with meshes, and the mesh size of the second roller (24) is smaller than that of the first roller (23); the rotating motor (21) is arranged on the frame (1) and can drive the first roller (23) and the second roller (24) to rotate in a fixed shaft mode.

2. A multi-screening sand screen according to claim 1, wherein: an output shaft of the rotating motor (21) is connected with a transmission shaft (22); two ends of the first roller (23) are provided with first supporting rings (231); be connected with a plurality of circumference evenly distributed's first bracing piece (232) on first bracing ring (231) inner disc, first bracing piece (232) keep away from the one end of first bracing ring (231) and be connected with transmission shaft (22) global.

3. A multi-screening sand screen according to claim 2, wherein: second support rings (241) are arranged at two ends of the second roller (24), a plurality of second support rods (242) which are uniformly distributed in the circumferential direction are connected to the inner circumferential surface of each second support ring (241), and one ends, far away from the second support rings (241), of the second support rods (242) are connected with the outer circumferential surface of the first support ring (231).

4. A multi-screening sand screen according to claim 3, wherein: a first conveyor belt (6) for conveying sand is arranged below the second roller (24); a sliding stone plate (5) used for guiding broken stones out is arranged below a port of the second roller (24) close to the rotating motor (21), and the sliding stone plate (5) is fixedly connected with the rack (1).

5. A multi-screening sand screen according to claim 4, wherein: the port of the first roller (23) far away from the rotating motor (21) is connected with a material guide pipe (41), and the material guide pipe (41) is connected with a first feeding hopper (4) with an upward opening.

6. A multi-screening sand screen according to claim 5, wherein: the device also comprises a screen conveyer belt (34) and a second conveyer belt (36) which are arranged on one side of the first feeding hopper (4); one end of the screen conveyer belt (34) far away from the first feeding hopper (4) and one end of the second conveyer belt (36) far away from the first feeding hopper (4) are both inclined upwards; the mesh diameter of the screen conveyer belt (34) is larger than that of the first roller (23), the second conveyer belt (36) is arranged below the screen conveyer belt (34), and one end, far away from the ground, of the second conveyer belt (36) is positioned above the first feeding hopper (4); a second feeding hopper (31) is arranged above one end of the screen conveyer belt (34) close to the ground.

7. A multi-screening sand screen according to claim 6, wherein: a buffer plate (32) is arranged below the second feeding hopper (31), and the bottom surface of the buffer plate (32) is connected with a buffer spring (33) which is vertically arranged.

8. A multi-screening sand screen according to claim 7, wherein: one end of the screen mesh conveyor belt (34) far away from the ground is provided with a stone guide slideway (35) for guiding out stones.

9. A multi-screening sand screen according to claim 8, wherein: two sides of the second conveyor belt (36) are provided with roller frames (37), the roller frames (37) are arranged below the screen conveyor belt (34), and the roller frames (37) are provided with a plurality of groups and distributed along the conveying direction of the second conveyor belt (36); the roller frame (37) is provided with a roller (38), the axis of the roller (38) is perpendicular to the conveying direction of the second conveying belt (36), a gap is formed between the circumferential surface of the roller (38) and the surface of the second conveying belt (36), and the height of the gap is smaller than the mesh diameter of the screen conveying belt (34) and larger than the mesh diameter of the first roller (23).

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