Efficient screening mechanism for concrete aggregate

Abstract

The utility model relates to the technical field of concrete, in particular to an efficient screening mechanism for concrete aggregate. Comprising a screening box, a screening assembly movably connected into the screening box, a cover plate fixedly installed at the top of the screening box, a driving box fixedly installed at the top of the cover plate, a dispersing box fixedly installed at the top of the driving box, a dispersing assembly movably connected into the dispersing box and a supporting assembly fixedly installed at the bottom of the screening box. The screening assembly comprises a plurality of electric telescopic rods fixedly installed on the inner side wall of the screening box. According to the efficient screening mechanism for the concrete aggregate, the driving motor drives the transmission assembly, the transmission assembly outputs power of the driving motor to the stirring assembly, and the stirring assembly continuously stirs the aggregate entering the dispersing box and pushes the aggregate into the coarse material outlet at the same time; and the transmission assembly drives the stirring assembly to preliminarily scatter the coarse materials, large cakes in the coarse materials are avoided, and meanwhile the coarse materials can enter the screening box through the through holes after being preliminarily scattered.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete, in particular to an efficient screening mechanism for concrete aggregates. Background Art

[0002] Concrete is a building material composed of cement, water, aggregates (sand, stone) and other additives. It is widely used in the construction industry for manufacturing various building structures such as walls, floors, bridges, houses, etc. Concrete has many advantages, such as high strength, good durability, low cost, etc., making it an indispensable material in modern architecture.

[0003] Concrete aggregates refer to granular loose materials that play a skeletal or filling role in concrete. Concrete aggregates are generally divided into coarse aggregates and fine aggregates. Coarse aggregates refer to pebbles, crushed stones, etc., and fine aggregates refer to natural sand, artificial sand, etc. It can be considered that aggregates with a particle size greater than 4.75 mm are called coarse aggregates, commonly known as stones, and the commonly used ones are crushed stones and pebbles. Aggregates with a particle size of less than 4.75 mm are called fine aggregates, commonly known as sand. Sand is divided into two categories: natural sand and artificial sand according to its source.

[0004] Chinese Patent CN218133069U discloses a raw material screening device for concrete production. The utility model is provided with a screen, a protective shell is arranged outside the screen, and grooves are opened at positions of the protective shell corresponding to the screen. Clamping blocks are arranged in the grooves. Although the above document can ensure that the screened sand does not contain impurities and further improve the screening quality of the sand, during use, when the screening device screens concrete, since the device screens concrete through a single screen, it is easy for the concrete on the screen to have agglomerates and other substances that cannot be screened, and will then be discharged through the slag discharge pipe together with the large-particle concrete aggregates, resulting in incomplete screening of the concrete aggregates; if a large amount of concrete is poured onto the surface of the screen at one time, it will cause the concrete to accumulate on the surface of the screen. Due to the gravity of the concrete aggregates, the screen cannot screen the concrete aggregates better. Therefore, this utility model is proposed to solve the above problems. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides an efficient screening mechanism for concrete aggregates, which has the advantages of good flexibility, high practicability, etc.

[0006] To achieve the above object, the utility model provides the following technical solutions: A high-efficiency screening mechanism for concrete aggregates, comprising a screening box, a screening assembly movably connected inside the screening box, a cover plate fixedly installed on the top of the screening box, a driving box fixedly installed on the top of the cover plate, a dispersion box fixedly installed on the top of the driving box, a dispersion assembly movably connected inside the dispersion box, and a support assembly fixedly installed at the bottom of the screening box; The screening assembly includes a plurality of electric telescopic rods fixedly installed on the inner side wall of the screening box, a rough screening assembly fixedly installed on the side of the electric telescopic rod, a rotating rod fixedly installed on the inner side wall of the screening box, a fine screening assembly rotatably connected to the outside of the rotating rod, a waste outlet opened on the side wall of the screening box, a feeding pipe fixedly installed on the top of the cover plate, and a fine material outlet opened at the bottom of the screening box.

[0007] By adopting the above technical solutions in this application, the larger concrete aggregates are initially broken up by the dispersion assembly, and then the aggregates are screened by the rough screening assembly and the fine screening assembly in the screening box to obtain the aggregates suitable for use in concrete.

[0008] Further, the dispersion assembly includes a driving motor fixedly installed on the inner top wall of the driving box, a transmission assembly drivingly connected to the driving motor, and a stirring assembly fixedly installed on the top of the transmission assembly.

[0009] The beneficial effect of adopting the above further solution is that the driving motor drives the transmission assembly, and the transmission assembly drives the stirring assembly to initially break up the coarse materials to avoid large lumps in the coarse materials.

[0010] Further, a bayonet is opened at the top of the inner side wall of the screening box, and the bottom side of the cover plate is embedded in the bayonet and fixedly installed with the screening box through a buckle. A through hole penetrating the upper and lower surfaces is opened inside the cover plate, and the through hole is fixedly installed with the bottom of the feeding pipe.

[0011] The beneficial effect of adopting the above further solution is that the cover plate connected by the buckle is convenient for cleaning after use, avoiding affecting the next use. At the same time, the coarsely broken materials can enter the screening box through the through hole.

[0012] Further, the rough screening assembly includes a rough screening plate fixedly installed on the movable rod side of the electric telescopic rod, a plurality of intercepting plates fixedly installed on the top of the rough screening plate, and a blanking port opened at the lower end of the rough screening plate.

[0013] The beneficial effect of adopting the above further solution is that the electric telescopic rod drives the rough screening plate to continuously move horizontally to screen the aggregates falling on the top of the rough screening plate. At the same time, the intercepting plates always intercept the aggregates on the top of the rough screening plate, and the aggregates that cannot be directly screened can reach the fine screening plate through the blanking port.

[0014] Further, a protective cover is threadedly connected to the top of the dispersion box, a coarse material inlet is opened at the top of the protective cover, and a coarse material outlet is opened at the bottom of the dispersion box.

[0015] The beneficial effect of adopting the above further solution is that the protective cover facilitates the cleaning and subsequent maintenance of the dispersion box, and the aggregate can enter the dispersion box through the coarse material inlet and then be further processed through the coarse material outlet.

[0016] Further, the fine division component includes a fine division plate rotatably connected to the side of the rotating rod, a plurality of intercepting plates fixedly installed on the top of the fine division plate, a blocking plate fixedly installed horizontally through the waste outlet of the fine division plate and located at the outer top of the screening box, and a shaking rod rotatably connected to the inner side wall of the screening box. The top of the shaking rod is movably connected to the fine division plate, and a plurality of regular bumps are provided on the surface of the shaking rod.

[0017] The beneficial effect of adopting the above further solution is that the intercepting plates intercept the aggregate on the top of the fine division plate, the blocking plate blocks some of the aggregate that has not passed through the fine division plate from directly sliding out of the screening box, and the continuously rotating shaking rod drives the bumps on its surface to continuously strike the fine division plate, driving the fine division plate to continuously jump to screen the aggregate on the top.

[0018] Further, the transmission component includes a driving gear fixedly installed on the outer side of the output shaft of the driving motor, a driven gear meshing and drivingly connected to the outer side of the driving gear, and a transmission rod fixedly installed on the top of the driven gear. The transmission rod vertically penetrates the top of the driving box and the bottom of the dispersion box and is respectively rotatably connected to the driving box and the dispersion box.

[0019] The beneficial effect of adopting the above further solution is that the transmission component outputs the power of the driving motor to the stirring component. While the stirring component continuously stirs the aggregate entering the interior of the dispersion box, it pushes the aggregate into the coarse material outlet.

[0020] Further, the stirring component includes a mounting seat fixedly installed on the top of the transmission rod and a plurality of stirring blades fixedly installed on the outer side of the mounting seat.

[0021] The beneficial effect of adopting the above further solution is that the stirring component stirs and breaks up the aggregate entering the interior of the dispersion box, facilitating subsequent screening.

[0022] Further, the support component includes a plurality of lifting rods fixedly installed at the bottom of the screening box and a support seat fixedly installed at the bottom of the lifting rods.

[0023] The beneficial effect of adopting the above further solution is that the height of the screening box can be adjusted through the lifting rods to adapt to different working heights, and the support seat enhances the stability of the device during operation.

[0024] Compared with the prior art, the utility model provides an efficient screening mechanism for concrete aggregates, which has the following beneficial effects:

[0025] 1. For this efficient screening mechanism for concrete aggregates, the driving motor drives the transmission component, and the transmission component outputs the power of the driving motor to the stirring component. While the stirring component continuously stirs the aggregates entering the dispersion box, it pushes the aggregates into the coarse material outlet. The transmission component drives the stirring component to conduct preliminary dispersion treatment on the coarse materials, avoiding large lumps in the coarse materials. At the same time, after the preliminary dispersion, the coarse materials can enter the screening box through the through holes.

[0026] 2. For this efficient screening mechanism for concrete aggregates, the electric telescopic rod drives the coarse screening plate to continuously move horizontally to screen the aggregates falling on the top of the coarse screening plate. At the same time, the interception plate always intercepts the aggregates on the top of the coarse screening plate, and the aggregates that cannot be directly screened can reach the fine screening plate through the feeding port. By setting the dispersion component to conduct preliminary dispersion on the larger concrete aggregates, and then screening the aggregates through the coarse screening component and the fine screening component in the screening box, the aggregates suitable for concrete use are obtained, solving the problem of poor screening effect of using a sieve mesh for concrete aggregate screening. Description of the Drawings

[0027] Figure 1 is a three-dimensional view of the structure of the present utility model;

[0028] Figure 2 is a three-dimensional sectional view of the structure of the present utility model;

[0029] Figure 3 is the structure of the present utility model Figure 2 enlarged view of structure A in.

[0030] In the figure: 1. Screening box; 2. Screening component; 21. Electric telescopic rod; 22. Rotating rod; 23. Waste material outlet; 24. Feed pipe; 25. Fine material outlet; 3. Cover plate; 4. Driving box; 5. Dispersion box; 51. Protection cover; 52. Coarse material inlet; 53. Coarse material outlet; 6. Dispersion component; 61. Driving motor; 7. Coarse screening component; 71. Coarse screening plate; 72. Interception plate; 8. Fine screening component; 81. Fine screening plate; 82. Blocking plate; 83. Jitter rod; 9. Transmission component; 91. Driving gear; 92. Driven gear; 93. Transmission rod; 10. Stirring component; 101. Mounting seat; 102. Stirring blade; 11. Support component; 111. Lifting rod; 112. Support seat. Detailed Embodiments

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0032] Please refer to Figures 1-3 , a high-efficiency screening mechanism for concrete aggregates in this embodiment includes a screening box 1, a screening component 2 movably connected inside the screening box 1, a cover plate 3 fixedly installed on the top of the screening box 1, a driving box 4 fixedly installed on the top of the cover plate 3, a dispersion box 5 fixedly installed on the top of the driving box 4, a dispersion component 6 movably connected inside the dispersion box 5, and a support component 11 fixedly installed at the bottom of the screening box 1; the screening component 2 includes a plurality of electric telescopic rods 21 fixedly installed on the inner side wall of the screening box 1, a coarse screening component 7 fixedly installed on the side of the electric telescopic rod 21, a rotating rod 22 fixedly installed on the inner side wall of the screening box 1, a fine screening component 8 rotatably connected to the outside of the rotating rod 22, a waste outlet 23 opened on the side wall of the screening box 1, a feeding pipe 24 fixedly installed on the top of the cover plate 3, and a fine material outlet 25 opened at the bottom of the screening box 1.

[0033] By setting the driving motor 61 to cooperate with the transmission component 9 to transmit power to the stirring component 10, the stirring component 10 performs a preliminary dispersing and stirring on the aggregates entering the inside of the dispersion box 5, and then the coarse screening component 7 cooperates with the fine screening component 8 to screen out the inappropriate aggregates, which are shaken off to the outside of the screening box 1 through the vibrating fine screening plate 81. The appropriate aggregates fall through the fine screening plate 81 and are collected in cooperation with other instruments, and appropriate aggregates can be obtained.

[0034] Please refer to Figure 2 , Figure 3 , in this embodiment, the dispersion component 6 includes a driving motor 61 fixedly installed on the inner top wall of the driving box 4, a transmission component 9 drivingly connected to the driving motor 61, and a stirring component 10 fixedly installed on the top of the transmission component 9.

[0035] The driving motor 61 inside the driving box 4 outputs power, and the transmission component 9 transmits the power to the stirring component 10 to stir and disperse the aggregates inside the dispersion box 5.

[0036] Please refer to Figure 2 , in this embodiment, a bayonet is opened at the top of the inner side wall of the screening box 1, the bottom side of the cover plate 3 is embedded in the bayonet and fixedly installed with the screening box 1 through a buckle. A through hole penetrating the upper and lower surfaces is opened inside the cover plate 3, and the through hole is fixedly installed with the bottom of the feeding pipe 24.

[0037] The screening box 1 and the cover plate 3 are fixedly installed by setting a bayonet, which is convenient for the later cleaning and maintenance of the screening box 1. After passing through the feed pipe 24, the aggregate enters the inside of the screening box 1 through the through hole for screening.

[0038] Please refer to Figure 1 、 Figure 2 In this embodiment, the rough screening component 7 includes a rough screening plate 71 fixedly installed on the side of the movable rod of the electric telescopic rod 21, and a plurality of intercepting plates 72 are fixedly installed on the top of the rough screening plate 71. A material discharge port is opened at the lower end of the rough screening plate 71.

[0039] By setting the electric telescopic rod 21 to drive the rough screening plate 71 to vibrate repeatedly in the horizontal direction, the falling aggregate is continuously screened. Unsuitable aggregate cannot pass through the holes of the rough screening plate 71 and can only reach the top of the fine screening plate 81 through the material discharge port.

[0040] Please refer to Figure 1 、 Figure 3 In this embodiment, a protective cover 51 is provided at the top of the dispersion box 5 in a threaded connection, a coarse material inlet 52 is opened at the top of the protective cover 51, and a coarse material outlet 53 is opened at the bottom of the dispersion box 5.

[0041] By setting the threaded connection between the dispersion box 5 and the protective cover 51, it is convenient for the later cleaning and maintenance of the dispersion box 5. The aggregate enters the dispersion box 5 through the coarse material inlet 52. At the same time, under the stirring operation of the stirring component 10, the aggregate passes through the coarse material outlet 53 for the next screening.

[0042] Please refer to Figure 2 In this embodiment, the fine screening component 8 includes a fine screening plate 81 rotatably connected to the side of the rotating rod 22, a plurality of intercepting plates 72 fixedly installed on the top of the fine screening plate 81, a blocking plate 82 fixedly installed horizontally through the waste outlet 23 and located at the top outside the screening box 1, and a shaking rod 83 rotatably connected to the inner side wall of the screening box 1. The top of the shaking rod 83 is movably connected to the fine screening plate 81, and a plurality of regular convex blocks are provided on the surface of the shaking rod 83.

[0043] By setting the intercepting plates 72 on the top of the fine screening plate 81, the aggregate is always intercepted on the top of the fine screening plate 81 to prevent the aggregate from falling through the side seams. At the same time, the blocking plate 82 can prevent the suitable aggregate from being directly spilled out of the screening box 1 through the fine screening plate 81. At the same time, the rotation of the shaking rod 83 drives the fine screening plate 81 to continuously jump, and the aggregate on the top of the fine screening plate 81 is continuously hit up for screening. At the same time, the unsuitable aggregate is bounced out of the outside of the fine screening plate 81 under the jumping of the fine screening plate 81 when it reaches the end of the fine screening plate 81.

[0044] It should be noted that a driving device is driven inside the shaking rod 83, and it can rotate without external driving.

[0045] Please refer to Figure 2 and Figure 3 In this embodiment, the transmission assembly 9 includes a driving gear 91 fixedly installed on the outer side of the output shaft of the driving motor 61, a driven gear 92 meshed and drivingly connected to the outer side of the driving gear 91, and a transmission rod 93 fixedly installed on the top of the driven gear 92. The transmission rod 93 vertically penetrates the top of the driving box 4 and the bottom of the dispersion box 5 and is rotatably connected to the driving box 4 and the dispersion box 5 respectively.

[0046] By setting the transmission assembly 9, the power output of the driving motor 61 is transmitted to the stirring assembly 10, and then the stirring assembly 10 is driven to stir and disperse the aggregate entering the interior of the dispersion box 5.

[0047] Please refer to Figure 2 and Figure 3 In this embodiment, the stirring assembly 10 includes a mounting seat 101 fixedly installed on the top of the transmission rod 93 and a plurality of stirring blades 102 fixedly installed on the outer side of the mounting seat 101.

[0048] By setting the mounting seat 101, the power of the transmission assembly 9 is transmitted to the stirring blades 102, and the stirring blades 102 then stir and disperse the aggregate, facilitating subsequent further screening operations.

[0049] Please refer to Figure 1 In this embodiment, the support assembly 11 includes a plurality of lifting rods 111 fixedly installed on the bottom of the screening box 1 and a support seat 112 fixedly installed on the bottom of the lifting rods 111.

[0050] By setting the support assembly 11, the height of the screening box 1 can be adjusted in real time to cooperate with different instruments in different scenarios to collect the aggregate after screening.

[0051] It should be noted that the driving motor 61 is a prior art, and its specific structure and working principle will not be elaborated in this text.

[0052] The working principle of the above embodiment is as follows:

[0053] The aggregate is poured into the dispersion box 5 from the coarse material inlet 52. The drive motor 61 is started. The output shaft of the drive motor 61 drives the rotation of the drive gear 91. The drive gear 91 drives the rotation of the driven gear 92, which in turn drives the rotation of the transmission rod 93. The rotation of the transmission rod 93 drives the rotation of the mounting seat 101. While the rotation of the mounting seat 101 drives the stirring blades 102 to stir the aggregate in the dispersion box 5, the aggregate is pushed into the coarse material outlet 53. After passing through the coarse material outlet 53, the aggregate falls into the interior of the feed pipe 24 and reaches the top of the coarse separation plate 71. The electric telescopic rod 21 drives the coarse separation plate 71 to vibrate continuously. Suitable aggregate passes through the interior of the coarse separation plate 71, and unsuitable aggregate falls through the discharge opening of the coarse separation plate 71 to reach the top of the fine separation plate 81. The rotation of the shaking rod 83 continuously drives the convex block to strike the fine separation plate 81. The aggregate jumps continuously on the fine separation plate 81. Suitable aggregate falls through the holes of the fine separation plate 81 and is collected. Unsuitable aggregate is broken under continuous action. Aggregate that cannot be broken reaches the edge of the fine separation plate 81 under the action of gravity and is ejected from the interior of the screening box 1 during repeated knocking-off actions.

[0054] The electrical components mentioned in the text are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer for control, and the existing publicly disclosed electrical connection technology is not elaborated in the text.

Claims

1. An efficient screening mechanism for concrete aggregates, characterized in that, It includes a screening box (1), a screening component (2) movably connected inside the screening box (1), a cover plate (3) fixedly installed on the top of the screening box (1), a drive box (4) fixedly installed on the top of the cover plate (3), a dispersion box (5) fixedly installed on the top of the drive box (4), a dispersion component (6) movably connected inside the dispersion box (5), and a support component (11) fixedly installed at the bottom of the screening box (1); The screening component (2) includes a number of electric telescopic rods (21) fixedly installed on the inner side wall of the screening box (1), a coarse screening component (7) fixedly installed on the side of the electric telescopic rod (21), a rotating rod (22) fixedly installed on the inner side wall of the screening box (1), a fine screening component (8) rotatably connected to the outside of the rotating rod (22), a waste outlet (23) opened on the side wall of the screening box (1), a feeding pipe (24) fixedly installed on the top of the cover plate (3), and a fine material outlet (25) opened at the bottom of the screening box (1).

2. The high-efficiency screening mechanism for concrete aggregates according to claim 1, wherein: The dispersion component (6) includes a drive motor (61) fixedly installed on the inner top wall of the drive box (4), a transmission component (9) drivingly connected to the drive motor (61), and a stirring component (10) fixedly installed on the top of the transmission component (9).

3. The high-efficiency screening mechanism for concrete aggregates according to claim 1, characterized in that: A bayonet is opened at the top of the inner side wall of the screening box (1). The bottom of the side surface of the cover plate (3) is embedded in the bayonet and fixedly installed with the screening box (1) through a buckle. A through hole penetrating the upper and lower surfaces is opened inside the cover plate (3), and the through hole is fixedly installed with the bottom of the feeding pipe (24).

4. An efficient screening mechanism for concrete aggregates according to claim 1, characterized in that: The coarse screening component (7) includes a coarse screening plate (71) fixedly installed on the side of the movable rod of the electric telescopic rod (21), a number of intercepting plates (72) fixedly installed on the top of the coarse screening plate (71), and a feeding port is opened at the lower end of the coarse screening plate (71).

5. The high-efficiency screening mechanism for concrete aggregates according to claim 1, wherein: The top of the dispersion box (5) is provided with a protective cover (51) connected by threads, a coarse material inlet (52) opened on the top of the protective cover (51), and a coarse material outlet (53) opened at the bottom of the dispersion box (5).

6. The high-efficiency screening mechanism for concrete aggregates according to claim 1, characterized in that: The fine screening component (8) includes a fine screening plate (81) rotatably connected to the side of the rotating rod (22), a number of intercepting plates (72) fixedly installed on the top of the fine screening plate (81), a blocking plate (82) fixedly installed on the fine screening plate (81) horizontally penetrating the waste outlet (23) and located at the top outside the screening box (1), and a shaking rod (83) rotatably connected to the inner side wall of the screening box (1). The top of the shaking rod (83) is movably connected to the fine screening plate (81), and a number of regular convex blocks are provided on the surface of the shaking rod (83).

7. The high-efficiency screening mechanism for concrete aggregates according to claim 2, wherein: The transmission component (9) includes a driving gear (91) fixedly installed on the outside of the output shaft of the drive motor (61), a driven gear (92) meshing and drivingly connected to the outside of the driving gear (91), and a transmission rod (93) fixedly installed on the top of the driven gear (92). The transmission rod (93) vertically penetrates the top of the drive box (4) and the bottom of the dispersion box (5) and is respectively rotatably connected to the drive box (4) and the dispersion box (5).

8. The high-efficiency screening mechanism for concrete aggregates according to claim 2, wherein: The stirring assembly (10) includes a mounting seat (101) fixedly installed at the top of the transmission rod (93), and a plurality of stirring blades (102) fixedly installed on the outer side of the mounting seat (101).

9. The high-efficiency screening mechanism for concrete aggregates according to claim 1, characterized in that: The support assembly (11) includes a plurality of lifting rods (111) fixedly installed at the bottom of the screening box (1), and a support seat (112) fixedly installed at the bottom of the lifting rods (111).

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