Sand screening machine

Abstract

The utility model belongs to the field of sand screening machines, particularly relates to a sand screening machine, and aims to solve the problems that when an existing sand screening machine is used for screening sand, small particles and foreign matters in the sand are easily raised, the surrounding environment is influenced, potential safety hazards exist, workers around the machine easily suck the small particles and the foreign matters into bodies, and the sand screening machine is inconvenient to use. According to the technical scheme, the device comprises a top box and a bottom frame, a feeding port is formed in the top of the top box, a feeding channel is arranged on the feeding port, the bottom of the top box is arranged to be open, the bottom frame is fixedly connected to the bottom of the top box, and the top and the front side of the bottom frame are arranged to be open. The sand screening device has the advantages that sand can be conveniently screened, foreign matters in the sand can be conveniently removed, neatness of the sand is guaranteed, fine particles and dust can be sucked when the sand is screened, damage to the surrounding environment is prevented, damage to workers is reduced, and body safety of the workers is guaranteed.

Description

Technical Field

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

[0002] In construction, sand screening is an important step to clean up waste rocks in sand and separate coarse sand from fine sand. The quality of sand after screening directly affects the overall quality of the building. Currently, sand screening machines are mainly used to screen sand.

[0003] However, the existing sand screening machines have the following problems: when the machine screens the sand, it is easy for small particles and foreign matter inside the sand to be raised as dust, affecting the surrounding environment and posing a safety hazard. Moreover, it is easy for the workers around the machine to inhale it into their bodies, causing harm to the workers' health. Utility Model Content

[0004] The utility model aims to solve the shortcomings of a sand screening machine in the prior art, that is, when screening sand, small particles and foreign matter inside the sand are easily raised into dust, affecting the surrounding environment, posing a potential safety hazard, and making it easy for workers around the machine to inhale them into their bodies, causing damage to the workers' bodies.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A sand screening machine comprises a top box and a bottom frame, wherein a feed port is provided at the top of the top box, a feed channel is provided at the feed port, the bottom of the top box is provided as an open portion, the bottom of the top box is fixedly connected to the bottom frame, the top and the front side of the bottom frame are both provided as open portions, and a side hole is provided at the rear side of the top box for facilitating the discharge of foreign matter in the sand;

[0007] A screening mechanism, which is arranged inside the top box and is used to screen the sand material;

[0008] A dust removal mechanism is arranged on the top box to remove dust inside the machine.

[0009] In a possible design, the screening mechanism includes a motor, a screening frame, a screening net, a U-shaped frame, a reciprocating screw and four springs, one side of the motor is fixedly connected to one side of the top box by bolts, the output end of the motor passes through one side of the top box and is fixedly connected to one end of the reciprocating screw, the output end of the motor is rotatably connected to the top box, one end of the reciprocating screw is rotatably connected to an inner wall of one side of the top box, the U-shaped frame is threadedly sleeved on the reciprocating screw, two sides of one side of the U-shaped frame are respectively fixedly connected to two sides of one side of the same screening frame, both sides of the screening frame are fixedly connected with telescopic rods, the fixed ends of the four telescopic rods are respectively fixedly connected to the inner walls of both sides of the same top box, the four springs are respectively sleeved on the four telescopic rods, the two ends of the four springs are respectively fixedly connected to the inner wall of the top box and the two sides of the screening frame, the screening net is fixedly set on the inner wall of the screening frame, the screening frame and the screening net are both inclined, and one side of the screening frame is set as an open place and is interconnected with the side holes.

[0010] In a possible design, the dust removal mechanism includes a filter box, a connecting pipe, two air suction hoods and a filter screen. A pump box is fixedly provided on the top of the top box by bolts, and an air pump is fixedly provided inside the pump box by bolts. The air inlet end of the air suction pump is fixedly connected to a No. 1 pipe, and one end of the No. 1 pipe is communicated with the connecting pipe. The two ends of the connecting pipe are respectively fixedly connected to the tops of the two air suction hoods. The bottoms of the two air suction hoods pass through the top of the same top box and are communicated with the inside of the top box. The air outlet end of the air suction pump passes through an inner wall on one side of the pump box and is communicated with the filter box. An opening is provided on one side of the filter box, and the filter screen is provided on one side of the filter box. The inside of the filter box is provided with a triangular plate for easy cleaning of the inside of the filter box.

[0011] In a possible design, a connecting frame is fixedly connected to the outer side of the filter screen, and slide bars are fixedly connected to both sides of the rear side of the connecting frame for easy removal of the filter screen. Slide grooves matching the slide bars are opened on both sides of one side of the filter box, and the two slide bars are slidably connected to the two slide grooves respectively. The shapes of the two slide bars and the two slide grooves are both set to be T-shaped, and a top plate is fixedly connected to the top of the connecting frame, and the front and rear sides of the top plate extend to the front side and the top of the filter box respectively; a fixing column for fixing the filter screen is threadedly connected to the top plate, one end of the fixing column extends to the top inside of the filter box and is threadedly connected to the filter box, and the other end of the fixing column is fixedly connected to a rotating handle.

[0012] In a possible design, a collecting box for collecting the screened sand is disposed inside the bottom frame, and a connecting handle is fixedly connected to the front side of the collecting box.

[0013] In a possible design, a side frame is fixedly connected to the rear side of the top box, one side of the side frame is interconnected with the side hole, and a collection tray for collecting foreign matter in the sand is provided below the side frame.

[0014] In the present application, when in use, the sand material to be screened is poured into the top box through the feed channel, and then the motor is started through the controller. The output shaft of the motor drives the reciprocating screw on the inner wall of the top box to rotate, and the reciprocating screw drives the U-shaped frame and the sieving frame to sifting, and at the same time, the sifting net is shaken left and right under the action of the spring and the telescopic rod, thereby sifting the sand material to ensure the neatness of the sand material. While sifting, the vacuum pump inside the pump box is started through the external controller, and the air inlet end of the vacuum pump absorbs the dust inside the top box through the suction hood, and then the absorbed gas is discharged. Filter through the filter on the filter box to prevent dust from overflowing and ensure the safety of the staff. After the filter box is used for a long time, loosen the fixing column, and then move the connecting frame through the top plate. The slide bar on the connecting frame slides in the slide groove, and the filter is disassembled for maintenance. At the same time, under the action of the triangular plate, it is convenient to clean the inside of the filter box. After sieving the sand, collect the sifted sand through the collection box, which is convenient for storage and movement. At the same time, the sifted foreign matter is collected through the side frame and the collection tray, which is convenient for handling the foreign matter.

[0015] The beneficial effects of the utility model are:

[0016] In the utility model, the screening mechanism and the dust removal mechanism are used to facilitate the screening of sand materials and remove foreign matter therein to ensure the cleanliness of the sand materials. At the same time, when the sand materials are screened, the following fine particles and dust can be absorbed to prevent damage to the surrounding environment, reduce harm to the staff, and ensure the physical safety of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 It is a rear view structural schematic diagram of the utility model;

[0019] Figure 3 It is a partial exploded view of the utility model;

[0020] Figure 4 It is a cross-sectional exploded view of the filtering structure of the utility model;

[0021] Figure 5 It is an enlarged schematic diagram of the structure of part A of the utility model.

[0022] In the figure: 1. top box; 2. bottom frame; 3. collecting box; 4. connecting handle; 5. U-shaped frame; 6. connecting pipe; 7. suction hood; 8. motor; 9. side frame; 10. collecting plate; 11. filter box; 12. reciprocating screw rod; 13. sieving frame; 14. sieving net; 15. spring; 16. top plate; 17. fixing column; 18. slide bar; 19. slide trough; 20. connecting frame; 21. filter net; 22. triangle plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Embodiment 1

[0025] Reference Figure 1-Figure 5 A sand screening machine comprises a top box 1 and a bottom frame 2. A feed port is provided at the top of the top box 1, and a feed channel is provided for introducing sand. The bottom of the top box 1 is open and directly connected to the bottom frame 2. The top and front side of the bottom frame 2 are also open for easy screening and collection of sand. A side hole is provided at the rear side of the top box 1 for removing foreign matter from the sand.

[0026] The screening mechanism is specifically implemented by fixing one side of the motor 8 to one side of the top box 1 by bolts, and the output end of the motor 8 passes through one side of the top box 1 and is fixedly connected to one end of the reciprocating screw 12, and the other end of the reciprocating screw 12 is rotatably connected to the inner wall of one side of the top box 1, and the U-shaped frame 5 is sleeved on the reciprocating screw 12, and moves back and forth with the rotation of the screw, and the two sides of the U-shaped frame 5 are respectively fixedly connected to the two sides of the screening frame 13, and telescopic rods and springs 15 are also provided on both sides of the screening frame 13 to ensure the stable movement of the screening frame 13, and the screening net 14 is fixed on the inner wall of the screening frame 13. When the motor 8 is working, the screening frame 13 and the screening net 14 will reciprocate back and forth to screen the sand material, and the screened foreign matter will be discharged through the opening and side holes on one side of the screening frame 13.

[0027] The dust removal mechanism is specifically implemented as follows: a pump box is fixed on the top of the top box 1, and an air pump is arranged in the pump box. The air inlet end of the air pump is connected to the connecting pipe 6 through a No. 1 pipe, and the two ends of the connecting pipe 6 are respectively connected to two suction hoods 7. The bottom of the suction hood 7 passes through the top of the top box 1 and directly extends into the interior of the top box 1 to absorb dust. The air outlet end of the air pump sends the dust-containing gas into the filter box 11. A filter screen 21 is arranged on one side of the filter box 11 for filtering dust. A triangular plate 22 is arranged inside the filter box 11 for easy cleaning.

[0028] The present application can be used in the field of sand screening machines, and can also be used in other fields applicable to the present application.

[0029] Embodiment 2

[0030] refer to Figure 1-Figure 5 , based on the improvement of the first embodiment, a sand screening machine comprises:

[0031] The filter screen 21 is fixed by a connecting frame 20. A slide bar 18 is provided on the rear side of the connecting frame 20, which is slidably connected to a slide groove 19 on the side of the filter box 11 to facilitate the removal and installation of the filter screen 21. A top plate 16 is provided on the top of the connecting frame 20, which is threadedly connected to the top of the filter box 11 through a fixing column 17. A rotating handle is provided at one end of the fixing column 17 to facilitate tightening and loosening.

[0032] A collecting box 3 is provided inside the bottom frame 2 for collecting the sieved sand material. A connecting handle 4 is provided on the front side of the collecting box 3 for easy taking out and putting in.

[0033] A side frame 9 is provided at the rear side of the top box 1 and is communicated with the side hole. A collecting tray 10 is provided below the side frame 9 for collecting the screened foreign matter.

[0034] However, as is well known to those skilled in the art, the working principles and wiring methods of the motor 8 and the vacuum pump are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any optional selections according to their needs or convenience. The motor 8 and the vacuum pump are connected to the external controller through lines and are powered by an external power supply.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sand screening machine, characterized in that: It comprises a top box (1) and a bottom frame (2), the top of the top box (1) is provided with a feed port, the feed port is provided with a feed channel, the bottom of the top box (1) is arranged as an open position, the bottom of the top box (1) is fixedly connected to the bottom frame (2), the top and the front side of the bottom frame (2) are both arranged as open positions, and the rear side of the top box (1) is provided with a side hole for facilitating the discharge of foreign matter in the sand material; A screening mechanism, which is arranged inside the top box (1) and is used to screen the sand material; A dust removal mechanism is arranged on the top box (1) and is used to remove dust inside the machine.

2. A sand screening machine according to claim 1, characterized in that: The screening mechanism comprises a motor (8), a screening frame (13), a screening net (14), a U-shaped frame (5), a reciprocating screw rod (12) and four springs (15); one side of the motor (8) is fixedly connected to one side of the top box (1) by means of bolts; the output end of the motor (8) passes through one side of the top box (1) and is fixedly connected to one end of the reciprocating screw rod (12); the output end of the motor (8) is rotatably connected to the top box (1); one end of the reciprocating screw rod (12) is rotatably connected to an inner wall of one side of the top box (1); the U-shaped frame (5) is threadedly sleeved on the reciprocating screw rod (12); and one side of the U-shaped frame (5) is respectively provided with a plurality of springs (15). The screen frame (13) is fixedly connected to both sides of one side of the same screening frame (13), and both sides of the screening frame (13) are fixedly connected with telescopic rods, and the fixed ends of the four telescopic rods are respectively fixedly connected to the inner walls of both sides of the same top box (1), and the four springs (15) are respectively sleeved on the four telescopic rods, and the two ends of the four springs (15) are respectively fixedly connected to the inner wall of the top box (1) and the two sides of the screening frame (13), and the screening net (14) is fixedly set on the inner wall of the screening frame (13), and the screening frame (13) and the screening net (14) are both inclined, and one side of the screening frame (13) is set to be open and communicated with the side hole.

3. A sand screening machine according to claim 1, characterized in that: The dust removal mechanism comprises a filter box (11), a connecting pipe (6), two air suction hoods (7) and a filter screen (21); a pump box is fixedly arranged on the top of the top box (1) by means of bolts; an air pump is fixedly arranged inside the pump box by means of bolts; an air inlet end of the air pump is fixedly connected to a No. 1 pipe; one end of the No. 1 pipe is communicated with the connecting pipe (6); the two ends of the connecting pipe (6) are respectively fixedly connected to the tops of the two air suction hoods (7); the bottoms of the two air suction hoods (7) both pass through the top of the same top box (1) and are communicated with the inside of the top box (1); the air outlet end of the air suction pump passes through an inner wall of one side of the pump box and is communicated with the filter box (11); an opening is arranged on one side of the filter box (11); the filter screen (21) is arranged on one side of the filter box (11); and a triangular plate (22) is arranged inside the filter box (11) for facilitating cleaning of the inside of the filter box (11).

4. A sand screening machine according to claim 3, characterized in that: The outer side of the filter screen (21) is fixedly connected to a connecting frame (20), and the two sides of the rear side of the connecting frame (20) are fixedly connected to slide bars (18) for facilitating the removal of the filter screen (21). One side of the filter box (11) is provided with slide grooves (19) adapted to the slide bars (18), and the two slide bars (18) are respectively slidably connected to the two slide grooves (19). The shapes of the two slide bars (18) and the two slide grooves (19) are both set to be T-shaped. A top plate (16) is fixedly connected to the top of the connection frame (20); the front side and the rear side of the top plate (16) extend to the front side of the filter box (11) and the top of the filter box (11) respectively; a fixing column (17) for fixing the filter screen (21) is threadedly connected to the top plate (16); one end of the fixing column (17) extends to the inside of the top of the filter box (11) and is threadedly connected to the filter box (11); the other end of the fixing column (17) is fixedly connected to a rotating handle.

5. A sand screening machine according to claim 1, characterized in that: A collection box (3) for collecting the sieved sand is arranged inside the bottom frame (2), and a connecting handle (4) is fixedly connected to the front side of the collection box (3).

6. A sand screening machine according to claim 1, characterized in that: A side frame (9) is fixedly connected to the rear side of the top box (1), one side of the side frame (9) is communicated with the side hole, and a collection tray (10) for collecting foreign matter in the sand is arranged below the side frame (9).

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