Gravel aggregate secondary crushing finished product screening device

Abstract

The utility model discloses a gravel aggregate secondary crushing finished product screening device, and relates to the technical field of gravel aggregate screening, the gravel aggregate secondary crushing finished product screening device comprises a screening box, the upper end of the screening box is provided with a screening net, the edge of the top end of the screening box is provided with a protective edge, and the surface of one side of the protective edge is provided with a discharge port. A material pushing mechanism is arranged at the upper end of the other side of the protective edge, a fan mechanism fixed through threads is arranged on one side of the material pushing mechanism, the fan mechanism is composed of a fan frame and two fans, a discharging opening is formed in the front surface of the screening box, and a fine material box is movably connected to the interior of the discharging opening; the material pushing mechanism comprises a moving frame and a material pushing plate, a moving inserting groove for the material pushing plate to move up and down is formed in the moving frame, and according to the scheme, the problems that existing gravel aggregate screening is mostly single-stage screening, the screening effect is poor, the amount of dust on the surface is large, and pollution is large are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sand and gravel aggregate screening, in particular to a sand and gravel aggregate secondary crushing finished product screening device. Background Art

[0002] Sand and gravel aggregate is a general term for materials such as sand, pebbles, crushed stones, blocks, and rubble stones used in water conservancy projects. Sand and gravel aggregate is the main building material for structures such as concrete and masonry in water conservancy projects. It will be classified by size through screening before use.

[0003] For example, the Chinese authorized patent with announcement number CN220461314U (a pre-distribution device for screening sand and gravel aggregates): includes a device that can stably drop aggregates from different positions through the lateral reciprocating movement of the aggregate hopper during operation, thereby ensuring that the aggregates in subsequent work are prevented from piling up together, and at the same time, through the provided dividing plate, the aggregates can be evenly blocked and diverted during the falling process, thereby avoiding the occurrence of uneven aggregate falling. The pre-distribution device for screening sand and gravel aggregates includes a screening box, a plug-in frame is installed on the screening box in an inclined manner, a screening frame is installed on the plug-in frame, a screening net for screening is fixed on the screening frame, the bottom of the screening box is inclined, a feed port is opened at the top of the screening box, an aggregate hopper is symmetrically slidably provided at the feed port, an adjusting rod is symmetrically rotated on the inner side of the feed port, a fixed block is fixed on the outer side of the aggregate hopper, and a dividing plate is provided inside the screening box corresponding to the lower side of the aggregate hopper.

[0004] However, most of the existing sand and gravel aggregate screening is single-stage screening, which has poor screening effect, a lot of dust on the surface and serious pollution; therefore, it does not meet the existing needs. In this regard, we propose a sand and gravel aggregate secondary crushing finished product screening device. Utility Model Content

[0005] The purpose of the utility model is to provide a screening device for finished products of secondary crushing of sand and gravel aggregates, so as to solve the problems in the above background technology that most of the existing sand and gravel aggregate screening are single-stage screening, with poor screening effect, much dust on the surface and serious pollution.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a screening device for secondary crushing of sand and gravel aggregate products, comprising: a screening box, a screening mesh is provided at the upper end of the screening box, a protective edge is provided at the top edge of the screening box, and a discharge port is provided on one side surface of the protective edge, a pushing mechanism is provided at the upper end of the other side of the protective edge, a fan mechanism fixed with threads is provided on one side of the pushing mechanism, and the fan mechanism consists of a fan frame and two fans, a discharge opening is provided on the front surface of the screening box, and a fine material box is movably connected to the inside of the discharge opening.

[0007] Preferably, the pushing mechanism includes a movable frame and a pushing plate, and a movable slot for the pushing plate to move up and down is provided inside the movable frame.

[0008] Preferably, both side surfaces of the push plate are provided with limiting slots, and limiting plug plates are inserted and connected inside the limiting slots.

[0009] Preferably, a limiting plate is provided at the lower end of both sides of the movable frame, a support frame is provided on one side of the limiting plate, and a first rotation groove is provided on the lower surface of both sides of the movable frame and the lower surface of the limiting plate, and the first rotation column is rotatably connected inside the first rotation groove.

[0010] Preferably, dust suction plates are welded on both sides of the movable slot, a dust suction pipe is provided at the upper end of the dust suction plate, and a dust suction opening communicating with the dust suction pipe is provided on the front surface of the dust suction plate.

[0011] Preferably, a second rotating groove is provided on the lower surface of the fine material box, and a second rotating column is rotatably connected inside the second rotating groove.

[0012] Preferably, the upper surface of the push plate and the front surface of the fine material box are both provided with handles.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model provides a pushing mechanism at the upper end of one side of the protective edge, and a fan mechanism is provided on one side of the pushing mechanism to push the pushing mechanism, and relies on the pushing plate to push the sand and gravel aggregate, and performs secondary screening of the sand and gravel aggregate by pushing back and forth. Dust is generated during screening, and the fan mechanism is started. The fan mechanism consists of a fan frame and two fans, and the two fans correspond to the front and rear of the pushing plate respectively, so as to perform blowing operations on the sand and gravel aggregate before and after movement, and blow out the fine dust on the sand and gravel aggregate, so that sand and gravel aggregate with uniform particles can be screened out and discharged from the discharge port of the protective edge. When blowing, the dust suction pipe is externally connected to the dust suction fan to perform dust suction operations on the blown dust, and the dust enters the dust suction plate from the dust suction opening and is discharged from the dust suction pipe, thereby improving the cleanliness of the environment.

[0015] 2. By setting a mobile slot inside the mobile frame, the push plate moves up and down along the mobile slot. The height of the push plate is adjusted according to the stacking height of the sand and gravel aggregates. The limit plug is inserted into the limit slot, and the push plate falls naturally. The limit plug contacts the upper surface of the mobile frame, thereby limiting and fixing the push plate. Through the height adjustment of the push plate, it is suitable for pushing different amounts of sand and gravel aggregates, thereby improving the fineness of sand and gravel aggregate screening and improving flexibility and applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic structural diagram of the pusher mechanism of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the mobile frame of the utility model when viewed from above;

[0019] Figure 4 This is a schematic diagram of the structure of the fine material box of the present utility model when viewed from above;

[0020] In the figure: 1. Screening box; 2. Protective edge; 3. Screening net; 4. Discharge opening; 5. Fine material box; 6. Pushing mechanism; 7. Fan mechanism; 8. Moving frame; 9. Limiting plate; 10. Support frame; 11. Pushing plate; 12. Moving slot; 13. Limiting slot; 14. Limiting plug-in plate; 15. Dust suction plate; 16. Dust suction pipe; 17. Dust suction opening; 18. Handle; 19. First rotating groove; 20. First rotating column; 21. Second rotating groove; 22. Second rotating column. DETAILED DESCRIPTION

[0021] 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 the embodiments.

[0022] See also Figure 1-4 The screen box 1 is provided with a screening device for crushing finished products of sand and gravel aggregates, comprising: a screening box 1, a screening mesh 3 is provided at the upper end of the screening box 1, a protective edge 2 is provided at the top edge of the screening box 1, and a discharge port is provided on one side surface of the protective edge 2, and a pushing mechanism 6 is provided at the upper end of the other side of the protective edge 2. A fan mechanism 7 fixed with a thread is provided on one side of the pushing mechanism 6, and the fan mechanism 7 consists of a fan frame and two fans. The front surface of the screening box 1 is provided with a discharge opening 4, and the discharge opening 4 is movably connected to the fine material box 5. The pushing mechanism 6 includes a movable frame 8 and a pushing plate 11. The interior of the movable frame 8 is provided with a movable slot 12 for the pushing plate 11 to move up and down. Both sides of the pushing plate 11 are provided with limited slots 13, and the limited slots 13 are inserted into the limited inserting plate 14, which is suitable for pushing different amounts of sand and gravel aggregates, thereby improving the fineness of sand and gravel aggregate screening and improving flexibility and applicability.

[0023] The dust collecting plate 15 is then pulled back and forth to remove the dust, which is then removed from the dust collecting plate 15 and then removed from the dust collecting plate 16.

[0024] It is further introduced that a limiting plate 9 is provided at the lower end of both sides of the movable frame 8, a support frame 10 is provided on one side of the limiting plate 9, and a first rotating groove 19 is provided on the lower surface of both sides of the movable frame 8 and the lower surface of the limiting plate 9. The internal rotation of the first rotating groove 19 is connected with a first rotating column 20. The limiting plate 9 is clamped on the protective edge 2, and the first rotating column 20 contacts the upper surface of the protective edge 2, thereby facilitating the movement of the pushing mechanism 6 along the protective edge 2, thereby improving the convenience and smoothness of movement.

[0025] See also Figure 1 、 2 Dust suction plates 15 are welded on both sides of the movable slot 12, and a dust suction pipe 16 is provided at the upper end of the dust suction plate 15. The front surface of the dust suction plate 15 is provided with a dust suction opening 17 which is interconnected with the dust suction pipe 16. When blowing air, the dust suction pipe 16 is externally connected to a dust suction fan to suction the blown dust. The dust enters the dust suction plate 15 from the dust suction opening 17 and is discharged from the dust suction pipe 16, thereby improving the cleanliness of the environment.

[0026] See also Figure 1 、 4 A second rotating groove 21 is provided on the lower surface of the fine material box 5, and the second rotating groove 21 is internally rotatably connected to a second rotating column 22. The upper surface of the pushing plate 11 and the front surface of the fine material box 5 are both provided with handles 18. When the fine material box 5 moves out of the screening box 1, the second rotating column 22 rotates by friction, thereby realizing the movement of the fine material box 5 and improving the convenience and smoothness of movement.

[0027] Working principle: When in use, the limiting plate 9 is stuck in the protective edge 2, and the first rotating column 20 contacts the upper surface of the protective edge 2, so that the pushing mechanism 6 can move along the protective edge 2, which improves the convenience and smoothness of movement. The sand and gravel aggregates to be screened are placed on the screening net 3, and the fine particles are screened by the screening net 3, and then fall into the fine material box 5 for storage. Preliminary screening is performed during practice. According to the stacking height of the sand and gravel aggregate, the height of the pushing plate 11 is adjusted, and the limiting plug 14 is inserted into the limiting slot 13 to limit and fix the pushing plate 11. Then the pushing mechanism 6 is pushed, and the sand and gravel aggregate are pushed by the pushing plate 11. The sand and gravel aggregates are screened for the second time in a pushing manner, and dust is generated during the screening. The fan mechanism 7 is started. The fan mechanism 7 consists of a fan frame and two fans. The two fans correspond to the front and rear of the pushing plate 11 respectively, so that the sand and gravel aggregates before and after the movement are blown, and the fine dust on the sand and gravel aggregates is blown out, so that the sand and gravel aggregates with uniform particles can be screened out and discharged from the discharge port of the protective edge 2. When blowing, the dust suction pipe 16 is externally connected to the dust suction fan to suction the blown dust. The dust enters the dust suction plate 15 from the dust suction opening 17 and is discharged from the dust suction pipe 16, thereby improving the cleanliness of the environment.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A screening device for finished products of secondary crushing of sand and gravel aggregates, comprising a screening box (1), characterized in that: The upper end of the screening box (1) is provided with a screening net (3), the top edge of the screening box (1) is provided with a protective edge (2), and a discharge port is provided on one side surface of the protective edge (2), a pushing mechanism (6) is provided on the upper end of the other side of the protective edge (2), a fan mechanism (7) fixed with threads is provided on one side of the pushing mechanism (6), and the fan mechanism (7) consists of a fan frame and two fans, a discharge opening (4) is provided on the front surface of the screening box (1), and a fine material box (5) is movably connected inside the discharge opening (4).

2. The device for screening finished products of secondary crushing of sand and gravel aggregate according to claim 1, characterized in that: The pushing mechanism (6) comprises a movable frame (8) and a pushing plate (11); a movable slot (12) for the pushing plate (11) to move up and down is provided inside the movable frame (8).

3. The device for screening finished products of secondary crushing of sand and gravel aggregate according to claim 2, characterized in that: Both side surfaces of the push plate (11) are provided with limiting slots (13), and the limiting inserting plates (14) are inserted and connected inside the limiting slots (13).

4. The device for screening finished products of secondary crushing of sand and gravel aggregate according to claim 2, characterized in that: The lower ends of both sides of the movable frame (8) are provided with a limiting plate (9), one side of the limiting plate (9) is provided with a supporting frame (10), the lower surfaces of both sides of the movable frame (8) and the lower surface of the limiting plate (9) are provided with a first rotating groove (19), and the interior of the first rotating groove (19) is rotatably connected to a first rotating column (20).

5. The device for screening finished products of secondary crushing of sand and gravel aggregate according to claim 2, characterized in that: Dust suction plates (15) are welded on both sides of the movable slot (12), a dust suction pipe (16) is provided at the upper end of the dust suction plate (15), and a dust suction opening (17) communicating with the dust suction pipe (16) is provided on the front surface of the dust suction plate (15).

6. The device for screening finished products of secondary crushing of sand and gravel aggregate according to claim 1, characterized in that: A second rotating groove (21) is provided on the lower surface of the fine material box (5), and a second rotating column (22) is rotatably connected inside the second rotating groove (21).

7. The device for screening finished products of secondary crushing of sand and gravel aggregate according to claim 2, characterized in that: The upper surface of the push plate (11) and the front surface of the fine material box (5) are both provided with handles (18).

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