Multi-stage sand screening machine

Abstract

The utility model discloses a multistage sand screening machine which comprises a screening box, four supporting columns are fixedly connected to the side wall of the bottom of the screening box, a sand discharging nozzle is fixedly connected to the side wall of the lower end of the screening box and communicated with the interior of the screening box, and a bottom plate is fixedly connected to the right side wall of the screening box and communicated with the interior of the screening box. A first motor is fixedly connected to the side wall of the top of the bottom plate, an output shaft of the first motor is fixedly connected with a rotating rod, one end of the rotating rod penetrates through the side wall of the screening box and is fixedly connected with a screening barrel, the side wall of the outer ring of the rotating rod is rotationally connected into the side wall of the screening box through a bearing, and the screening barrel is located in the screening box. And one end of the rotating rod penetrates through the side wall of the screening barrel. Through mutual cooperation of the rotating rod, the extrusion rod, the roller, the filter screen and other components, caked sand can be smashed, so that the use efficiency of the sand screening machine is improved, and the sand screening machine is easy, convenient and fast to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of sand screening machines, in particular to a multi-stage sand screening machine. Background Art

[0002] Construction refers to the production activities in the implementation stage of engineering construction, which is the construction process of various buildings. In the process of construction, sand is used as an ingredient to pour mortar. However, general sand contains a lot of impurities, which need to be screened by a sand screening machine.

[0003] For example, Chinese patent publication number CN216459966U discloses a screening machine capable of multi-stage screening, comprising a bracket, a power unit, an opposite motion unit, a support unit and a screening unit; the bracket: a U-shaped structure; the screening unit: comprising a sieve plate 1, a sieve plate 2, large sieve holes and small sieve holes, the sieve plate 2 is located on the inner upper side of the bracket, the sieve plate 1 is located above the sieve plate 2, and the sieve plates 1 and 2 form an angle of thirty degrees with the horizontal plane, the large sieve holes are evenly arranged and distributed on the sieve plate 1, the small sieve holes are evenly arranged and distributed on the sieve plate 2, and the sieve plates 1 and 2 are slidably installed on the inner wall of the bracket through the support unit; the power unit: installed on the inner side of the top of the bracket and connected to the sieve plate 2.

[0004] After a long period of accumulation, sand will clump due to factors such as moisture. In the above scheme, it is not convenient for the sand screening machine to crush the clumped sand when screening the sand, thereby reducing the use efficiency of the sand screening machine and the convenience is not high. Utility Model Content

[0005] The utility model provides a multi-stage sand screening machine to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A multi-stage sand screening machine comprises a screening box, four supporting columns are fixedly connected to the side wall at the bottom of the screening box, a sand discharge nozzle is fixedly connected to the side wall at the lower end of the screening box, the sand discharge nozzle is communicated with the inside of the screening box, a bottom plate is fixedly connected to the right wall of the screening box, a first motor is fixedly connected to the side wall at the top of the bottom plate, a rotating rod is fixedly connected to the output shaft of the first motor, one end of the rotating rod passes through the side wall of the screening box and is fixedly connected to a screening drum, the outer ring side wall of the rotating rod is rotatably connected to the side wall of the screening box through a bearing, the screening drum is located in the screening box, one end of the rotating rod passes through the side wall of the screening drum, and a plurality of Support rods, one ends of multiple support rods are fixedly connected to the inner circle side wall of the screening drum, the side wall of the screening drum is provided with a cleaning device, a filter box is fixedly connected to the left side wall of the screening box, a sand guide pipe is fixedly connected to the side wall of the lower end of the filter box, one end of the sand guide pipe passes through the side walls of the screening box and the screening drum, a through hole is provided on the side wall of the screening drum, one end of the sand guide pipe passes through the through hole, a filter screen is provided in the filter box, the filter screen is arranged in an inclined shape, a slag discharge port is provided on the side wall of the filter box, one end of the filter screen passes through the slag discharge port, a sand inlet spout is fixedly connected to the top of the filter box, the sand inlet spout is communicated with the filter box, and a crushing device is provided in the filter box.

[0008] As a further improvement of the present technical solution: the cleaning device comprises two sliding grooves, a notch is provided on the side wall of the screening drum, the two sliding grooves are provided on the two side walls of the notch, baffles are slidably connected in the two sliding grooves, the baffles and the side walls of the sliding grooves are fixedly connected with limiting protrusions, the two limiting protrusions are matched with each other, a handle is fixedly connected to the side wall of the baffle, and a rectangular window is provided on the side wall of the screening box, and the rectangular window is located next to the handle.

[0009] As a further improvement of the technical solution: the handle surface is provided with anti-slip patterns.

[0010] As a further improvement of the present technical solution: the crushing device includes two rollers, both of which are rotatably connected between the inner side walls of the filter box, the two rollers are located directly below the sand inlet spout, and multiple extrusion rods are fixedly connected to the outer ring side walls of the two rollers, and the multiple extrusion rods on the two roller side walls are cross-staggered, and the two roller side walls are fixedly connected to connecting rods, one end of the two connecting rods penetrates the side walls of the filter box and is rotatably connected to the filter box, gears are fixedly connected to the outer ring side walls of the two connecting rods, and the two gears are meshingly connected, and a mounting plate is fixedly connected to the side wall of the filter box, a second motor is fixedly connected to the top of the mounting plate, and the output shaft of the second motor is fixedly connected to the side wall at one end of one of the connecting rods.

[0011] As a further improvement of the technical solution: the top opening of the sand inlet spout is larger than the bottom opening.

[0012] As a further improvement of the present technical solution: the bearing is arranged as a sealed bearing.

[0013] Compared with the prior art, the beneficial effect of the utility model is that the device can crush the agglomerated sand through the mutual cooperation of the rotating rod, the extrusion rod, the roller, the filter screen and other components, thereby improving the use efficiency of the sand screening machine, and the operation is simple, convenient and fast.

[0014] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 This is a schematic diagram of the front cross-sectional structure of a multi-stage sand screening machine proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the top view of the structure of a multi-stage sand screening machine proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the left side cross-sectional structure of a screening cylinder in a multi-stage sand screening machine proposed by the utility model;

[0019] Figure 4 for Figure 1 Schematic diagram of the locally enlarged structure of A in the middle.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Screening box; 2. Support column; 3. Rectangular window; 4. Sand discharge nozzle; 5. Bottom plate; 6. First motor; 7. Bearing; 8. Rotating rod; 9. Support rod; 10. Screening cylinder; 11. Sand guide pipe; 12. Sand inlet nozzle; 13. Extrusion rod; 14. Drum; 15. Filter box; 16. Slag discharge port; 17. Filter screen; 18. Baffle; 19. Sliding groove; 20. Mounting plate; 21. Second motor; 22. Connecting rod; 23. Gear; 24. Handle; 25. Limiting bump. DETAILED DESCRIPTION

[0022] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0023] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] See also Figure 1-4In the embodiment of the utility model, a multi-stage sand screening machine includes a screening box 1, four supporting columns 2 are fixedly connected to the bottom side wall of the screening box 1, a sand discharge nozzle 4 is fixedly connected to the side wall of the lower end of the screening box 1, and the sand discharge nozzle 4 is connected to the inside of the screening box 1, a bottom plate 5 is fixedly connected to the right side wall of the screening box 1, a first motor 6 is fixedly connected to the top side wall of the bottom plate 5, and a rotating rod 8 is fixedly connected to the output shaft of the first motor 6. One end of the rotating rod 8 passes through the side wall of the screening box 1 and is fixedly connected to a screening drum 10. The outer ring side wall of the rotating rod 8 is rotatably connected to the side wall of the screening box 1 through a bearing 7. The bearing 7 is set with a sealed bearing. The screening drum 10 is located in the screening box 1, and one end of the rotating rod 8 passes through the side wall of the screening drum 10. A plurality of supporting rods 9 are fixedly connected to the outer ring side wall of the rotating rod 8 , one end of multiple support rods 9 are fixedly connected to the inner circle side wall of the screening drum 10, and a cleaning device is provided on the side wall of the screening drum 10. A filter box 15 is fixedly connected to the left wall of the screening box 1, and a sand guide pipe 11 is fixedly connected to the side wall of the lower end of the filter box 15. One end of the sand guide pipe 11 penetrates the side walls of the screening box 1 and the screening drum 10. A through hole is provided on the side wall of the screening drum 10, and one end of the sand guide pipe 11 passes through the through hole. A filter screen 17 is provided in the filter box 15, and the filter screen 17 is arranged in an inclined shape. A slag discharge port 16 is provided on the side wall of the filter box 15, and one end of the filter screen 17 penetrates the slag discharge port 16. A sand inlet spout 12 is fixedly connected to the top of the filter box 15. The top opening of the sand inlet spout 12 is larger than the bottom opening. The sand inlet spout 12 is connected to the filter box 15, and a crushing device is provided in the filter box 15.

[0026] See also Figure 1 , Figure 3-4 The cleaning device includes two sliding grooves 19, a notch is provided on the side wall of the screening drum 10, and the two sliding grooves 19 are provided on the two side walls of the notch. A baffle 18 is slidably connected in the two sliding grooves 19, and the baffle 18 and the side wall of the sliding groove 19 are fixedly connected with a limiting protrusion 25, and the two limiting protrusions 25 are adapted. A handle 24 is fixedly connected to the side wall of the baffle 18, and a rectangular window 3 is provided on the side wall of the screening box 1, and the rectangular window 3 is located next to the handle 24. When it is necessary to clean the impurities in the screening drum 10, the screening drum can be rotated. 10, so that the baffle 18 is located just below the screening drum 10, and then the handle 24 is pulled through the rectangular window 3, and the handle 24 drives the baffle 18 to move, so that the baffle 18 is disengaged from the two sliding grooves 19, and the impurities in the screening drum 10 fall into the screening box 1 through the gap in the side wall of the screening drum 10, and finally slide to the sand discharge spout 4 through the inclined side wall at the bottom of the screening box 1, and are discharged through the sand discharge spout 4. After cleaning, the baffle 18 is reset, and the baffle 18 can be limited and fixed by engaging the two limit protrusions 25 set.

[0027] See also Figure 1 , Figure 4 The surface of the handle 24 is provided with anti-skid patterns to prevent slipping when the handle 24 is pulled.

[0028] See also Figure 1-2 The crushing device includes two rollers 14, and the two rollers 14 are rotatably connected between the inner side walls of the filter box 15. The two rollers 14 are located directly below the sand inlet 12. A plurality of extrusion rods 13 are fixedly connected to the outer side walls of the two rollers 14. The plurality of extrusion rods 13 on the side walls of the two rollers 14 are arranged in a cross-staggered manner. The side walls of the two rollers 14 are fixedly connected to connecting rods 22. One end of the two connecting rods 22 penetrates the side wall of the filter box 15 and is rotatably connected to the filter box 15. Gears 23 are fixedly connected to the outer side walls of the two connecting rods 22. The two gears 23 are meshed and connected. A mounting plate 20 is fixedly connected to the side wall of the filter box 15. A second motor 21 is fixedly connected to the top of the mounting plate 20, and the output shaft of the second motor 21 is fixedly connected to the side wall of one end of one of the connecting rods 22. By starting the second motor 21, the output shaft of the second motor 21 drives the connecting rod 22 to rotate. Through the provided gear 23, when one connecting rod 22 rotates, the other connecting rod 22 can be driven to rotate relatively at the same time. The two connecting rods 22 simultaneously drive the two rollers 14 to rotate relatively, and the two rollers 14 drive the multiple extrusion rods 13 to rotate. When sand falls between the two rollers 14 through the sand inlet spout 12, the agglomerated sand can be broken up through the relative rotation of the multiple extrusion rods 13.

[0029] The working principle of the utility model is as follows: sand is poured into the filter box 15 through the sand inlet spout 12, and the second motor 21 is started. The output shaft of the second motor 21 drives the connecting rod 22 to rotate. Through the provided gear 23, when one connecting rod 22 rotates, the other connecting rod 22 can be driven to rotate relatively at the same time. The two connecting rods 22 simultaneously drive the two rollers 14 to rotate relatively. The two rollers 14 drive the multiple squeezing rods 13 to rotate. When the sand falls between the two rollers 14 through the sand inlet spout 12, the agglomerated sand can be broken up through the relative rotation of the multiple squeezing rods 13. The broken sand falls onto the surface of the filter screen 17 and passes through the filter screen 17. The sand can be screened for the first time. The sand falls to the bottom of the filter box 15 through the filter screen 17, and then flows into the screening drum 10 through the sand guide pipe 11. The larger stones will slide through the inclined side wall of the filter screen 17 to the slag discharge port 16 and be discharged through the slag discharge port 16. By starting the first motor 6, the first motor 6 drives the rotating rod 8 to rotate, and the rotating rod 8 drives the screening drum 10 to rotate, so that the sand in the screening drum 10 is screened for the second time, and the smaller stones in the sand are filtered. The filtered sand falls into the screening box 1 through the side wall of the screening drum 10, and is finally discharged through the sand discharge nozzle 4. Smaller stones and other impurities will remain in the screening drum 10.

[0030] When it is necessary to clean the impurities in the screening drum 10, the screening drum 10 is rotated to make the baffle 18 located directly below the screening drum 10, and then the handle 24 is pulled through the rectangular window 3. The handle 24 drives the baffle 18 to move, so that the baffle 18 is disengaged from the two sliding grooves 19. The impurities in the screening drum 10 fall into the screening box 1 through the notch in the side wall of the screening drum 10, and finally slide through the inclined side wall at the bottom of the screening box 1 to the sand discharge spout 4, and are discharged through the sand discharge spout 4. After cleaning, the baffle 18 is reset, and the baffle 18 can be limited and fixed by engaging the two limit protrusions 25.

[0031] The above description is only a preferred embodiment of the utility model and does not impose any form of limitation on the utility model. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A multi-stage sand screening machine, comprising a screening box (1), characterized in that: Four support columns (2) are fixedly connected to the side walls at the bottom of the screening box (1); a sand discharge spout (4) is fixedly connected to the side walls at the lower end of the screening box (1); the sand discharge spout (4) is communicated with the inside of the screening box (1); a bottom plate (5) is fixedly connected to the right side wall of the screening box (1); a first motor (6) is fixedly connected to the top side wall of the bottom plate (5); a rotating rod (8) is fixedly connected to the output shaft of the first motor (6); one end of the rotating rod (8) passes through the side wall of the screening box (1) and is fixedly connected to a screening drum (10); the outer ring side wall of the rotating rod (8) is rotatably connected to the side wall of the screening box (1) via a bearing (7); the screening drum (10) is located in the screening box (1); one end of the rotating rod (8) passes through the side wall of the screening drum (10); a plurality of support rods (9) are fixedly connected to the outer ring side wall of the rotating rod (8); one end of the plurality of support rods (9) are fixedly connected to the side wall of the screening drum (10); The filter box (15) is fixedly connected to the inner side wall of the screening drum (10), and the side wall of the screening drum (10) is provided with a cleaning device. The left side wall of the screening box (1) is fixedly connected to a filter box (15), and the lower side wall of the filter box (15) is fixedly connected to a sand guide pipe (11). One end of the sand guide pipe (11) passes through the screening box (1) and the side wall of the screening drum (10). A through hole is opened on the side wall of the screening drum (10). The sand guide pipe (11) One end of the filter box (15) passes through the through hole, a filter screen (17) is provided in the filter box (15), the filter screen (17) is arranged in an inclined shape, a slag discharge port (16) is opened on the side wall of the filter box (15), one end of the filter screen (17) passes through the slag discharge port (16), a sand inlet spout (12) is fixedly connected to the top of the filter box (15), the sand inlet spout (12) is connected to the filter box (15), and a crushing device is provided in the filter box (15).

2. A multi-stage sand screening machine according to claim 1, characterized in that: The cleaning device comprises two sliding grooves (19), a notch is provided on the side wall of the screening drum (10), the two sliding grooves (19) are provided on the two side walls of the notch, baffles (18) are slidably connected in the two sliding grooves (19), limiting protrusions (25) are fixedly connected to the baffles (18) and the side walls of the sliding grooves (19), the two limiting protrusions (25) are adapted to each other, a handle (24) is fixedly connected to the side wall of the baffle (18), and a rectangular window (3) is provided on the side wall of the screening box (1), and the rectangular window (3) is located next to the handle (24).

3. A multi-stage sand screening machine according to claim 2, characterized in that: The surface of the handle (24) is provided with anti-slip patterns.

4. A multi-stage sand screening machine according to claim 1, characterized in that: The crushing device comprises two rollers (14), the two rollers (14) are rotatably connected between the inner side walls of the filter box (15), the two rollers (14) are located directly below the sand inlet (12), a plurality of extrusion rods (13) are fixedly connected to the outer side walls of the two rollers (14), the plurality of extrusion rods (13) on the side walls of the two rollers (14) are arranged in a cross-staggered manner, the side walls of the two rollers (14) are fixedly connected to the connecting rods (22), and the two connecting rods (22) are fixedly connected to the outer side walls of the two rollers (14). One end of the rod (22) passes through the side wall of the filter box (15) and is rotatably connected to the filter box (15); gears (23) are fixedly connected to the outer side walls of the two connecting rods (22); the two gears (23) are meshingly connected; a mounting plate (20) is fixedly connected to the side wall of the filter box (15); a second motor (21) is fixedly connected to the top of the mounting plate (20); and an output shaft of the second motor (21) is fixedly connected to the side wall of one end of one of the connecting rods (22).

5. The multi-stage sand screening machine according to claim 1, characterized in that: The top opening of the sand inlet spout (12) is larger than the bottom opening.

6. The multi-stage sand screening machine according to claim 1, characterized in that: The bearing (7) is arranged as a sealed bearing.

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