Aggregate multi-stage screening device

Abstract

The utility model provides an aggregate multi-stage screening device which comprises a box body, two connecting plates which are symmetrical front and back and can rotate are arranged in the box body, a motor used for driving the two connecting plates is arranged on the box body, a first screening plate which is arranged in an inclined mode is fixed between the two connecting plates, and a second screening plate which is arranged in an inclined mode is arranged between the first screening plate and the second screening plate. A discharging pipe used for discharging materials to the first screening plate penetrates through the box body. A connecting frame is fixed to the face, away from the discharging pipe, of the first screening plate, a second screening plate which is obliquely arranged is fixed in the connecting frame, the inner diameter of screening holes in the second screening plate is smaller than that of screening holes in the first screening plate, a fixing rod is fixed between the second screening plate and the first screening plate, and a first vibrator capable of making contact with the fixing rod is arranged in the box body. According to the aggregate cleaning device, aggregate accumulated on the sieve plate can be effectively and automatically cleaned, the cleaning process is simple and rapid, the situation that follow-up aggregate screening efficiency is affected after the aggregate is accumulated is avoided, and the labor burden of workers is relieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to screening device technical field especially relates to a kind of aggregate multistage screening device. BACKGROUND

[0002] Aggregate is the granular material in concrete and mortar and plays the role of framework and filling, and there are fine aggregate and coarse aggregate; the diameter of fine aggregate particle is between 0.16-5mm, and natural sand, such as river sand, sea sand and valley sand, is generally used; the diameter of coarse aggregate particle is greater than 5mm, and gravel and pebble are commonly used, and the strength of gravel concrete is higher than that of pebble concrete under the same conditions; after drying cylinder drying and heating, different specifications of aggregate need to be separated according to particle size by screening device, and different specifications of aggregate are stored in storage compartment of storage box, so as to accurately measure and grade according to the requirements of formula before stirring; due to the irregular shape of aggregate, a layer of aggregate cannot fall on the screening plate after long-term use of screening device, and the aggregate accumulated on the screening plate will affect the normal screening and screening efficiency of subsequent aggregate, so the staff need to clean the screening plate manually in time, which increases the labor burden of staff. SUMMARY

[0003] The utility model discloses an aggregate multistage screening device, which solves the problem that a layer of aggregate cannot fall on the screening plate, affecting the normal screening and screening efficiency of subsequent aggregate.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] An aggregate multistage screening device includes a box body, two front and rear symmetrical and rotatable connecting plates are arranged in the box body, a motor for driving the two connecting plates is arranged on the box body, a first screen plate is fixed between the two connecting plates and arranged obliquely, a discharge pipe for discharging material to the first screen plate is arranged through the box body; a connecting frame is fixed to one side of the first screen plate away from the discharge pipe, a second screen plate is fixed in the connecting frame and arranged obliquely, the inner diameter of the screen hole of the second screen plate is smaller than that of the first screen plate, a fixing rod is fixed between the second screen plate and the first screen plate, a first vibrator is arranged in the box body and can contact the fixing rod, and an electric telescopic rod for driving the first vibrator to move is fixed in the box body.

[0006] Compared with the prior art, the utility model has the following beneficial effects:

[0007] The aggregate is discharged through the discharge pipe between the two connecting plates, and then falls on the first sieve plate to be sieved, the large aggregate slides off the first sieve plate to complete the sieving, the medium and small aggregate falls through the sieve holes of the first sieve plate to the second sieve plate, the medium aggregate slides off the second sieve plate to complete the sieving, and the small aggregate falls through the sieve holes of the second sieve plate to complete the sieving; when the aggregate is sieved, the motor drives the two connecting plates to rotate, the top surface of the first sieve plate and the second sieve plate is downward, the aggregate accumulated on the first sieve plate and the second sieve plate falls to complete the cleaning, and the electric telescopic rod drives the first vibrator to move to be in contact with the fixed rod, the first vibrator is started to drive the fixed rod to vibrate the first sieve plate and the second sieve plate, and the aggregate on the first sieve plate and the second sieve plate is vibrated to fall; the aggregate accumulated on the sieve plate can be automatically cleaned, the cleaning process is simple and fast, the sieving efficiency of the subsequent aggregate is not affected after the aggregate is accumulated, and the labor burden of workers is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 It is a structure schematic view of a front view and a section of the utility model;

[0009] Figure 2 It is a structure schematic view of a connecting frame section of the utility model.

[0010] In the figure: 1, box body; 2, connecting plate; 21, motor; 22, connecting rod; 23, reinforcing block; 3, first sieve plate; 4, discharge pipe; 41, U-shaped rod; 42, cylinder; 5, connecting frame; 51, second sieve plate; 52, discharge pipe; 53, guide plate; 54, baffle; 55, L-shaped plate; 56, inclined block; 6, fixed rod; 7, first vibrator; 71, electric telescopic rod; 72, moving plate; 73, fixed plate; 8, vertical plate; 81, guide plate; 9, second vibrator. DETAILED DESCRIPTION

[0011] The specific content of the utility model will be described in detail in combination with the drawings and examples.

[0012] As Figure 1 And Figure 2The utility model provides a kind of aggregate multistage screening device, including box 1, two inside box 1 are present and can be rotated connecting plate 2, box 1 is equipped with the motor 21 for driving two connecting plate 2, between two connecting plate 2, it is fixed with the obliquely arranged No. 1 sieve plate 3, box 1 is penetrated with the discharge pipe 4 for discharging to No. 1 sieve plate 3;No. 1 sieve plate 3 is fixed with connecting frame 5 away from discharge pipe 4 side, connecting frame 5 is fixed with the obliquely arranged No. 2 sieve plate 51, the inner diameter of sieve hole on No. 2 sieve plate 51 is less than the inner diameter of sieve hole on No. 1 sieve plate 3, between No. 2 sieve plate 51 and No. 1 sieve plate 3, it is fixed with fixed rod 6, box 1 is equipped with No. 1 vibrator 7 that can be contacted with fixed rod 6, box 1 is fixed with the electric telescopic rod 71 for driving No. 1 vibrator 7 movement.By discharge pipe 4, aggregate is transported to No. 1 sieve plate 3, and aggregate is slid away from the side of No. 1 sieve plate 3 connecting plate 2 from discharge pipe 4, and medium particle and small particle aggregate are dropped downwards through the sieve hole on No. 1 sieve plate 3, and large particle aggregate is dropped downwards from the lower side of No. 1 sieve plate 3, and the screening of large particle aggregate is completed;After medium particle aggregate and small particle aggregate fall on No. 2 sieve plate 51, small particle fixed beam is dropped downwards through the sieve hole on No. 2 sieve plate 51, and the screening of small particle aggregate is completed, and the medium particle aggregate is dropped downwards through the lower side of No. 2 sieve plate 51, and the screening of small particle aggregate is completed;When aggregate screening is completed, motor 21 can be started to drive two connecting plate 2 to drive No. 1 sieve plate 3 and No. 2 sieve plate 51 rotate 180 °, so that the side (top surface) of No. 1 sieve plate 3 and No. 2 sieve plate 51 before carrying aggregate faces downward, and the aggregate accumulated on No. 1 sieve plate 3 and No. 2 sieve plate 51 can drop downwards, and the cleaning of aggregate is completed;Meanwhile, electric telescopic rod 71 can be started to drive No. 1 vibrator 7 to move, after the vibration end of No. 1 vibrator 7 is contacted with fixed rod 6, No. 1 vibrator 7 is started to make fixed rod 6 drive No. 1 sieve plate 3 and No. 2 sieve plate 51 vibrate, so as to further vibrate the aggregate accumulated on No. 1 sieve plate 3 and No. 2 sieve plate 51.

[0013] As Figure 1 And Figure 2As shown, the connecting frame 5 is fixed with the L-shaped plate 55 between the second sieve plate 51 and the first sieve plate 3, the horizontal part of the L-shaped plate 55 is arranged in an inclined manner and the inclination direction is the same as that of the first sieve plate 3, and the L-shaped plate 55 is fixed with the first sieve plate 3; the side of the connecting frame 5 close to the discharge pipe 4 is arranged in an open manner, and the side of the L-shaped plate 55 away from the open side of the connecting frame 5 has a gap with the inner wall of the connecting frame 5, and the side of the L-shaped plate 55 away from the first sieve plate 3 is fixed with the inclined block 56, and the inclination direction of the inclined block 56 is the same as that of the second sieve plate 51. The end of the L-shaped plate 55 close to the discharge pipe 4 is fixed with the first sieve plate 3, and when the medium and small particle aggregates fall downward through the sieve holes on the first sieve plate 3, the L-shaped plate 55 can carry the aggregates, and then makes the aggregates slide to the higher side of the second sieve plate 51, so that the aggregates pass through the gap between the L-shaped plate 55 and the inner wall of the connecting frame 5 and fall on the second sieve plate 51, so that the aggregates can fully roll on the second sieve plate 51, so as to effectively screen the medium and small particle aggregates; after the medium particle aggregates slide off the second sieve plate 51, they can be discharged through the open side of the connecting frame 5, which is opposite to the discharge direction of the large particle aggregates, so as to avoid mixing with the large particle aggregates again.

[0014] As shown in Figure 1 and Figure 2 As shown, the connecting frame 5 is fixed with the L-shaped plate 55 between the second sieve plate 51 and the first sieve plate 3, the horizontal part of the L-shaped plate 55 is arranged in an inclined manner and the inclination direction is the same as that of the first sieve plate 3, and the L-shaped plate 55 is fixed with the first sieve plate 3; the side of the connecting frame 5 close to the discharge pipe 4 is arranged in an open manner, and the side of the L-shaped plate 55 away from the open side of the connecting frame 5 has a gap with the inner wall of the connecting frame 5, and the side of the L-shaped plate 55 away from the first sieve plate 3 is fixed with the inclined block 56, and the inclination direction of the inclined block 56 is the same as that of the second sieve plate 51. The end of the L-shaped plate 55 close to the discharge pipe 4 is fixed with the first sieve plate 3, and when the medium and small particle aggregates fall downward through the sieve holes on the first sieve plate 3, the L-shaped plate 55 can carry the aggregates, and then makes the aggregates slide to the higher side of the second sieve plate 51, so that the aggregates pass through the gap between the L-shaped plate 55 and the inner wall of the connecting frame 5 and fall on the second sieve plate 51, so that the aggregates can fully roll on the second sieve plate 51, so as to effectively screen the medium and small particle aggregates; after the medium particle aggregates slide off the second sieve plate 51, they can be discharged through the open side of the connecting frame 5, which is opposite to the discharge direction of the large particle aggregates, so as to avoid mixing with the large particle aggregates again.

[0015] As shown in Figure 1 As shown, the bottom and two sides of the box body 1 are respectively provided with discharge openings, the bottom of the box body 1 is fixed with two vertically symmetrical vertical plates 8, the discharge pipe 52 is located between the two vertical plates 8, and the two sides of the vertical plate 8 are respectively fixed with inclined flow plates 81; the opening of the bottom of the box body 1 is located between the two flow plates 81 opposite to the two vertical plates 8, and the bottom of the box body 1 is fixed with two second vibrators 9, and the vibration ends of the second vibrators 9 are respectively connected with the flow plates 81 on the two vertical plates 8. After the large particle aggregates slide off the first sieve plate 3, they fall on the flow plate 81 located at the rightmost side in the box body 1, and then pass through the right side of the box body 1 (with the discharge pipe 52 as the boundary) and are discharged through the discharge pipe 52, so as to avoid mixing with the medium and small particle aggregates. Figure 1The medium-sized aggregate is discharged from the discharge port of the second sieve plate 51; the small aggregate falling through the discharge pipe 52 is discharged from the discharge port at the bottom of the box 1. The second vibrator 9 is started to vibrate the guide plate 81 to facilitate the aggregate on the guide plate 81 to slide down. Figure 1 The medium-sized aggregate is discharged from the discharge port of the second sieve plate 51; the small aggregate falling through the discharge pipe 52 is discharged from the discharge port at the bottom of the box 1. The second vibrator 9 is started to vibrate the guide plate 81 to facilitate the aggregate on the guide plate 81 to slide down.

[0016] As shown in Figure 1 The moving plate 72 connected with the first vibrator 7 is fixed at the telescopic end of the electric telescopic rod 71, and the fixed plate 73 is connected with the vibrating end of the first vibrator 7. The electric telescopic rod 71 is started to move the first vibrator 7 transversely through the moving plate 72, and the first vibrator 7 moves the fixed plate 73. The number of the fixed rods 6 is at least two. When the fixed plate 73 is in contact with the fixed rods 6 after the first vibrator 7 is started to vibrate the fixed plate 73, the fixed rods 6 vibrate the first sieve plate 3 and the second sieve plate 51.

[0017] As shown in Figure 1 and Figure 2 The main body of the motor 21 is fixed in the box 1 through the bearing block, the connecting rod 22 in T shape is fixed on the rotating shaft of the motor 21, and the connecting rod 22 is fixed with the inner walls of the two connecting plates 2. The motor 21 is started to rotate the two connecting plates 2 through the connecting rod 22.

[0018] As shown in Figure 1 and Figure 2 The discharge end of the discharge pipe 4 is fixed with the U-shaped rod 41 between the two connecting plates 2, the other end of the U-shaped rod 41 is fixed with the cylinder 42, and the reinforcing block 23 is fixed between the two connecting plates 2 and is rotatably connected with the cylinder 42. When the two connecting plates 2 are rotated, the reinforcing block 23 rotates with the rotation, and the cylinder 42 can increase the stability of the two connecting plates 2.

[0019] As shown in Figure 2As shown, the number of the first screen plates 3 is two, and the two first screen plates 3 are distributed oppositely. When one first screen plate 3 is used for a long time, the two connecting plates 2 are rotated to exchange the positions of the two first screen plates 3, the aggregate accumulated on the previous first screen plate 3 (the lower first screen plate 3) falls down to the lower first screen plate 3, and the aggregate can be continuously screened, so that the aggregate accumulated on the first screen plate 3 can be cleaned without stopping; when the first screen plate 3 and the second screen plate 51 are rotated by 180°, the aggregate accumulated on the second screen plate 51 falls on the inclined block 56, and the aggregate can slide away from the side of the connecting frame 5 far from the discharge pipe 4, so that the aggregate passes through the screen holes of the upper first screen plate 3 and falls on the lower first screen plate 3, and the aggregate can be continuously screened, so that the aggregate accumulated on the second screen plate 51 can be cleaned without stopping.

[0020] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. A multi-stage aggregate screening apparatus comprising a housing (1), characterised in that: The box (1) is provided with two front and back symmetrical and rotatable connecting plates (2), the box (1) is provided with a motor (21) for driving the two connecting plates (2), the two connecting plates (2) are fixed with an inclined first sieve plate (3) between them, the box (1) is provided with a discharge pipe (4) for discharging materials to the first sieve plate (3); the side of the first sieve plate (3) away from the discharge pipe (4) is fixed with a connecting frame (5), the connecting frame (5) is fixed with an inclined second sieve plate (51) inside, the inner diameter of the sieve hole of the second sieve plate (51) is smaller than that of the first sieve plate (3), the second sieve plate (51) and the first sieve plate (3) are fixed with a fixed rod (6) between them, the box (1) is provided with a first vibrator (7) which can contact with the fixed rod (6), the box (1) is fixed with an electric telescopic rod (71) for driving the first vibrator (7) to move.

2. The aggregate multi-stage screening apparatus of claim 1, wherein: The connecting frame (5) is fixed with an L-shaped plate (55) between the second sieve plate (51) and the first sieve plate (3), the horizontal part of the L-shaped plate (55) is inclined and the inclination direction is the same as that of the first sieve plate (3), the L-shaped plate (55) is fixed with the first sieve plate (3); the side of the connecting frame (5) close to the discharge pipe (4) is open, there is a gap between the side of the L-shaped plate (55) away from the open side of the connecting frame (5) and the inner wall of the connecting frame (5), the side of the L-shaped plate (55) away from the first sieve plate (3) is fixed with an inclined block (56), the inclination direction of the inclined block (56) is the same as that of the second sieve plate (51).

3. The aggregate multi-stage sizing device of claim 1, wherein: The connecting frame (5) is fixed with a material guide plate (53) which has the same inclination direction as the second sieve plate (51), the material guide plate (53) is located on the side of the second sieve plate (51) away from the first sieve plate (3), the side of the connecting frame (5) away from the first sieve plate (3) is communicated with a discharging pipe (52), one side of the material guide plate (53) is provided with a baffle (54) fixed with the second sieve plate (51), the discharging pipe (52) is located between the second sieve plate (51) and the baffle (54).

4. The aggregate multi-stage sizing device of claim 3, wherein: The bottom and two sides of the box (1) are respectively provided with discharge openings, the bottom of the box (1) is fixed with two vertically symmetrical vertical plates (8), the discharging pipe (52) is located between the two vertical plates (8), the two sides of the vertical plate (8) are respectively fixed with an inclined flow guide plate (81); the opening of the bottom of the box (1) is located between the two flow guide plates (81) on the opposite sides of the two vertical plates (8), the bottom of the box (1) is fixed with two second vibrators (9), the vibration end of the second vibrator (9) is connected with one flow guide plate (81) on the two vertical plates (8).

5. The aggregate multi-stage sizing device of claim 1, wherein: The telescopic end of the electric telescopic rod (71) is fixed with a moving plate (72) connected with the first vibrator (7), the vibration end of the first vibrator (7) is connected with a fixed plate (73).

6. The aggregate multi-stage sizing device of claim 1, wherein: The main body of the motor (21) is fixed in the box (1) through a bearing block, a T-shaped connecting rod (22) is fixed on the rotating shaft of the motor (21), the connecting rod (22) is fixed with the inner wall of the two connecting plates (2) respectively.

7. The aggregate multi-stage sizing device of claim 1, wherein: The discharge end of the discharge pipe (4) is fixed with a U-shaped rod (41) between the two connecting plates (2), the other end of the U-shaped rod (41) is fixed with a cylinder (42), the two connecting plates (2) are fixed with a reinforcing block (23) rotatably connected with the cylinder (42).

8. The aggregate multi-stage sizing device of claim 1, wherein: The number of the first sieve plates (3) is two, and the two first sieve plates (3) are oppositely distributed.

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