CN219850693U - Coarse sand aggregate vibration screening device - Google Patents

Abstract

The utility model discloses a coarse sand aggregate vibration screening device, belongs to the technical field of sand screening, and aims to solve the problems that in the prior art, coarse sand is in a continuous flowing state, sand exceeding the grain size is easy to dope in the screened sand and synchronously flow out to affect screening quality, screening is needed again when screening is not clean, so that the screening process is prolonged, the working hours are affected, the screening device comprises a screening table, a blanking table, a shielding plate and a blocking mechanism, a screening box is fixed above the screening table, the bottom of the screening box is provided with an opening, a conveying belt is arranged on the upper surface of the screening table corresponding to the opening, and a receiving table which is conveyed in the same direction with the conveying belt is arranged below the screening table; the blocking mechanism is arranged on the side wall of the screening box. This coarse sand aggregate vibration screening device benefits from setting up of shielding plate, push plate, blocking mechanism, can clean the grit of remaining on the mesh plate fast when coarse sand screens, promotes the quality of grit screening.

Description

Coarse sand aggregate vibration screening device

Technical Field

The utility model belongs to the technical field of sand and stone screening, and particularly relates to a coarse sand and stone aggregate vibration screening device.

Background

The sand aggregate is a main building material of structures such as concrete and piled stones in hydraulic engineering, the sand aggregate is divided into coarse sand and fine sand, the aggregate is required to be separated according to different particle sizes for analyzing the particle size distribution of the aggregate, the coarse sand aggregate is larger than the fine sand aggregate in particle size, but the coarse sand aggregate also has particle size limitation, the sand aggregate exceeding the particle size limitation of the coarse sand is required to be screened out and then crushed, so that the subsequent use quality of the sand aggregate is not influenced.

Disclosure of Invention

(1) Technical problem to be solved

Aiming at the defects of the prior art, the utility model aims to provide a coarse sand aggregate vibration screening device, which aims to solve the problems that sand exceeding the grain size is easy to dope in the screened sand and synchronously flow out to influence the screening quality, and when the screening is not clean, the screening is performed again to prolong the screening process and influence the working time in the prior art.

(2) Technical proposal

In order to solve the technical problems, the utility model provides the coarse sand aggregate vibration screening device which comprises a screening table, a blanking table, a shielding plate and a blocking mechanism, wherein a screening box is fixed above the screening table, the bottom of the screening box is provided with an opening, a conveyer belt is arranged at the position, corresponding to the opening, of the upper surface of the screening table, and a receiving table which is conveyed in the same direction with the conveyer belt is arranged below the screening table; the screening device comprises a screening box, a screening mechanism, a blanking table, a screening mechanism and a shielding plate, wherein the screening mechanism is arranged on the side wall of the screening box, the blanking table is obliquely arranged and connected with the screening mechanism, a movable plate is horizontally arranged in the screening box, a grid plate is embedded in the movable plate, and the shielding plate is rotatably arranged on one side above the movable plate; the upper surface laminating of fly leaf is equipped with the push plate, the push plate removes along the upper surface of fly leaf, the below of fly leaf is connected with the vibrator, the inner wall swing joint of fly leaf and screening case. Owing to setting up of shielding plate, push plate, blocking mechanism, can clean the grit of remaining on the gridding plate fast when coarse grit carries out the screening, promote the quality that grit was selected, avoid not conforming to the grit of particle diameter specification to mix in the grit that accords with the specification in flowing.

Preferably, the upper surface fixedly connected with connecting rod of push plate, the vertical setting of connecting rod, and the one end fixedly connected with connector of keeping away from the push plate, be fixed with the guide bar of slip laminating screening case inner wall on the connector.

Preferably, the connector is of a hollow annular structure, the internal threads penetrate through the hollow annular structure and are provided with driving screws, the driving screws are horizontally and rotatably arranged above the inside of the screening box, and a driving motor connected with the driving screws is fixed on the outer wall of the screening box. Thanks to the cooperation of connector and drive screw for the push plate has lateral shifting's power at fly leaf upper surface, thereby can be to the grit of being screened out unified clearance.

Preferably, the inner wall of the screening box is provided with a protruding part, the vibrator is embedded in the protruding part, and the upper surface of the movable plate is obliquely arranged at the position corresponding to the vibrator.

Preferably, the screening box is provided with an inclined surface corresponding to the shielding plate on the inner wall, and the inclined surface descends towards the movable plate.

Preferably, the blocking mechanism comprises a fixed frame, a closed plate, a telescopic cylinder and a connecting frame, wherein the fixed frame is fixedly connected with the side wall of the screening box, a through hole is formed in the screening box corresponding to the fixed frame in a penetrating manner, and the through hole is located above the movable plate.

Preferably, the sealing plate is slidably embedded into the fixing frame, the end part of the sealing plate is fixedly connected with a connecting frame, the other end of the connecting frame is fixedly connected with the telescopic end of the telescopic cylinder, and the telescopic cylinder is horizontally fixed above the fixing frame. Owing to the arrangement of the sealing plate, sand and stone are prevented from flying out in the vibration process.

(3) Compared with the prior art, the utility model has the beneficial effects that:

the utility model benefits from the arrangement of the shielding plate, the pushing plate and the blocking mechanism, can rapidly clean the sand left on the grid plate when coarse sand is screened, improves the sand screening quality, avoids sand which does not accord with the particle size specification from being mixed into sand which accords with the specification in the flowing process, simultaneously avoids the sand from blocking the aperture of the grid plate by the function of timing cleaning, improves the smoothness of sand screening, has compact integral procedure matching, is far away from being succinct and easy to realize, plays the roles of improving the coarse sand screening efficiency and increasing the sand screening smoothness, and can be widely popularized.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the internal structure of the screening box;

FIG. 3 is a schematic view of a blocking mechanism;

fig. 4 is an enlarged schematic view of the structure at a in fig. 2.

The marks in the drawings are: 1. a screening table; 2. a conveyor belt; 3. a blocking mechanism; 4. a screening box; 5. a blanking table; 6. a pushing plate; 7. driving a screw; 8. a shielding plate; 9. a receiving table; 10. a guide rod; 11. a connector; 12. a connecting rod; 13. a grid plate; 14. a vibrator; 16. a movable plate; 17. a connecting frame; 18. a telescopic cylinder; 19. a closing plate; 20. and fixing the frame.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

This concrete embodiment is a coarse sand aggregate vibration screening device, and its structure schematic diagram is as shown in fig. 1, including screening platform 1, unloading platform 5, shielding plate 8 and blocking mechanism 3, the top of screening platform 1 is fixed with screening case 4, and the bottom of screening case 4 is the opening setting, and the upper surface of screening platform 1 corresponds the opening position and is equipped with conveyer belt 2, and the below of screening platform 1 is equipped with the material receiving platform 9 with conveyer belt 2 syntropy conveying. The blocking mechanism 3 is arranged on the side wall of the screening box 4, the blanking table 5 is obliquely arranged and connected with the blocking mechanism 3,

referring to fig. 2 and 4, a movable plate 16 is horizontally arranged in the screening box 4, a grid plate 13 is embedded in the movable plate 16, and a shielding plate 8 is rotatably arranged on one side above the movable plate 16; the upper surface laminating of fly leaf 16 is equipped with push plate 6, and push plate 6 moves along the upper surface of fly leaf 16, and the below of fly leaf 16 is connected with vibrator 14, and fly leaf 16 and the inner wall swing joint of screening case 4. The upper surface fixedly connected with connecting rod 12 of push away from the push away plate 6, the vertical setting of connecting rod 12, and the one end fixedly connected with connector 11 of keeping away from push away plate 6 is fixed with the guide bar 10 of slip laminating screening case 4 inner wall on the connector 11. The connector 11 is hollow annular structure and inside screw thread passes there is drive screw 7, and drive screw 7 level rotation is installed in the inside top of screening case 4, is fixed with the driving motor who connects drive screw 7 on the outer wall of screening case 4. The inner wall of the screening box 4 is provided with a protruding part, the vibrator 14 is embedded in the protruding part, and the upper surface of the movable plate 16 is obliquely arranged at the position corresponding to the vibrator 14. The screening box 4 is provided with an inclined surface at the position corresponding to the shielding plate 8, and the inclined surface descends toward the movable plate 16. Coarse sand enters the screening box 4 and flows onto the grid plate 13 along the inclined surfaces of the screening box 4 and the movable plate 16.

Referring to fig. 3, the blocking mechanism 3 includes a fixed frame 20, a closing plate 19, a telescopic cylinder 18 and a connecting frame 17, the fixed frame 20 is fixedly connected with a side wall of the screening box 4, a through hole is formed in the screening box 4 corresponding to the fixed frame 20, and the through hole is located above the movable plate 16. The inside of closure plate 19 slip embedding fixed frame 20, the tip fixedly connected with link 17 of closure plate 19, the flexible end of the flexible cylinder 18 of the other end fixed connection of link 17, flexible cylinder 18 level is fixed in the top of fixed frame 20. The telescopic cylinder 18 stretches out fast to drive the closing plate 19 to slide, the fixed frame 20 stretches out for sand to flow out, and sand flows out of the screening box 4 along the blanking table 5.

Working principle: when the sand and gravel screening device is used, firstly coarse sand and gravel needing screening is conveyed to the upper portion of the screening box 4 through the feeding crawler, the coarse sand and gravel enters the screening box 4 and flows to the grid plate 13 along the inclined surfaces of the screening box 4 and the movable plate 16, the vibrator 14 is started to enable the movable plate 16 to have vibration force, the coarse sand and gravel on the surface continuously shakes, coarse sand and gravel meeting the particle size limitation flows down through the grid plate 13, flows to the receiving platform 9 through the conveying belt 2, coarse sand and gravel not meeting the particle size requirement is blocked on the grid plate 13, at the moment, the motor on the outer wall of the screening box 4 drives the shielding plate 8 to rotate, the shielding plate 8 seals the flowing position of sand and gravel inside the screening box 4, at the moment, the driving motor drives the driving screw 7 to rotate, the pushing plate 6 at the bottom is driven by the connector 11 in a threaded connection with the driving screw 7 to push the sand and gravel on the surface of the grid plate 13 towards the blocking mechanism 3, at the moment, the telescopic cylinder 18 stretches out and drives the sealing plate 19 to slide, the fixed frame 20 stretches out and the sand and gravel flows out, then the pushing plate 6 returns to the original position, the telescopic cylinder 18 contracts the fixed frame 20 to turn over the fixed frame 20, the shielding plate 8 is turned over, and the coarse gravel can continue to flow into the movable plate 16.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (7)

1. The utility model provides a coarse sand aggregate vibration screening device, includes screening platform (1), unloading platform (5), shielding plate (8) and blocking mechanism (3), the top of screening platform (1) is fixed with screening case (4), the bottom of screening case (4) is the opening setting, the upper surface of screening platform (1) corresponds the opening position and is equipped with conveyer belt (2), the below of screening platform (1) is equipped with material receiving platform (9) with conveyer belt (2) syntropy conveying;

the screening device is characterized in that the blocking mechanism (3) is arranged on the side wall of the screening box (4), the blanking table (5) is obliquely arranged and connected with the blocking mechanism (3), a movable plate (16) is horizontally arranged in the screening box (4), a grid plate (13) is embedded and installed in the movable plate (16), and a shielding plate (8) is rotatably arranged on one side above the movable plate (16);

the upper surface laminating of fly leaf (16) is equipped with push plate (6), push plate (6) remove along the upper surface of fly leaf (16), the below of fly leaf (16) is connected with vibrator (14), the inner wall swing joint of fly leaf (16) and screening case (4).

2. The coarse sand aggregate vibration screening device according to claim 1, wherein a connecting rod (12) is fixedly connected to the upper surface of the pushing plate (6), the connecting rod (12) is vertically arranged, one end, away from the pushing plate (6), of the connecting rod is fixedly connected with a connector (11), and a guide rod (10) which is in sliding fit with the inner wall of the screening box (4) is fixed on the connector (11).

3. The coarse sand aggregate vibration screening device according to claim 2, wherein the connector (11) is of a hollow annular structure, the internal threads penetrate through the driving screw (7), the driving screw (7) is horizontally and rotatably arranged above the inside of the screening box (4), and a driving motor connected with the driving screw (7) is fixed on the outer wall of the screening box (4).

4. The coarse sand aggregate vibration screening device according to claim 1, wherein the inner wall of the screening box (4) is provided with a protruding portion, the vibrator (14) is embedded in the protruding portion, and the upper surface of the movable plate (16) is obliquely arranged corresponding to the vibrator (14).

5. The coarse sand aggregate vibration screening device according to claim 4, wherein the screening box (4) is inclined at a position corresponding to the shielding plate (8), and the inclined surface descends towards the movable plate (16).

6. The coarse sand aggregate vibration screening device according to claim 1, wherein the blocking mechanism (3) comprises a fixed frame (20), a sealing plate (19), a telescopic cylinder (18) and a connecting frame (17), the fixed frame (20) is fixedly connected with the side wall of the screening box (4), a through hole is formed in the screening box (4) corresponding to the fixed frame (20) in a penetrating manner, and the through hole is located above the movable plate (16).

7. The coarse sand aggregate vibration screening device according to claim 6, wherein the sealing plate (19) is slidably embedded into the fixing frame (20), the end part of the sealing plate (19) is fixedly connected with the connecting frame (17), the other end of the connecting frame (17) is fixedly connected with the telescopic end of the telescopic cylinder (18), and the telescopic cylinder (18) is horizontally fixed above the fixing frame (20).