Modular multi-stage screening equipment for concrete recycled aggregate

Abstract

The utility model relates to the technical field of concrete regeneration, and discloses concrete recycled aggregate modularized multi-stage screening equipment which comprises a base and a sorting box detachably arranged above the base. The supporting assembly is arranged between the lug plate and the base and used for achieving elastic connection of the sorting box, the supporting assembly comprises a guide rod, a second gasket, a third gasket, an anti-disengaging piece and a clamping groove, the guide rod is fixedly connected with the base and penetrates through the lug plate, and the second gasket and the third gasket are both in sliding connection with the guide rod; the second gasket and the third gasket are located below and above the lug plate respectively, a clamping groove is formed in the side wall of the guide rod, the two anti-disengaging pieces are clamped in the clamping groove, and the anti-disengaging pieces limit the end of the guide rod through extrusion force applied to the anti-disengaging pieces by the end plate, so that the lug plate cannot disengage from the guide rod, locking is not needed through a nut, and the anti-seismic effect is good; and meanwhile, vibration screening of the sorting box cannot be affected, dismounting and mounting are convenient, and assembling is convenient.

Description

Technical Field

[0001] This utility model relates to the field of concrete recycling technology, and in particular to a modular multi-stage screening equipment for recycled concrete aggregates. Background Technology

[0002] With the rapid development of the construction industry, the use of concrete is constantly increasing, and a large amount of waste concrete is generated. These waste concretes are recycled and reused to produce recycled aggregates.

[0003] The prior art discloses a modular multi-stage screening structure for recycled concrete aggregate (publication number: CN118831820A), including a frame. Two screen plate structures are bolted to the inside of the frame and are stacked inside the frame. A bracket is bolted to the rear side of the top of the frame, and a screw is threaded through the internal thread of the bracket. An adjusting plate is rotatably connected to the bottom of the screw and is slidably connected inside the frame. Two striking components are bolted to both sides of the inner wall of the frame and are located between the two screen plate structures on opposite sides and are used in conjunction with the screen plate structures.

[0004] In the existing technology, the bracket and the base are mainly connected by screws and nuts. However, the bracket will vibrate at high frequency due to the vibration motor during sorting. The nut is used to lock and limit the position. When the vibration motor is working, the nut is easy to loosen, which will cause the bracket and the base to fall off. While welding the nut directly can prevent it from falling off, it will make it impossible to disassemble the bracket and the base, which is inconvenient for later inspection, maintenance and transportation.

[0005] Therefore, we propose a modular multi-stage screening equipment for recycled concrete aggregates. Utility Model Content

[0006] This utility model mainly solves the technical problem that the above-mentioned bracket and base are easily detached due to vibration when connected by bolts and nuts, and provides a modular multi-stage screening equipment for recycled concrete aggregate.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a modular multi-stage screening equipment for recycled concrete aggregates, comprising:

[0008] A base and a sorting box detachably mounted on top of the base, wherein a sieve plate is provided inside the cavity of the sorting box, and an ear plate is fixedly installed on the outer wall of the base;

[0009] A support assembly is disposed between the ear plate and the base to achieve an elastic connection of the sorting box. The support assembly includes a guide rod, a second gasket, a third gasket, an anti-detachment plate, and a slot. The guide rod is fixedly connected to the base and passes through the ear plate. The second and third gaskets are slidably connected to the guide rod and are located below and above the ear plate, respectively. A slot is opened on the side wall of the guide rod, and two anti-detachment plates are engaged in the slot. A second reset spring can push the anti-detachment plates.

[0010] In a preferred embodiment of the present invention, the support assembly further includes an end plate and a limiting groove. The end plate is slidably connected to the guide rod, and a limiting groove is provided on the top of the end plate for limiting the two anti-detachment pieces, which can fall into the limiting groove.

[0011] In a preferred embodiment of this utility model, the guide rod forms a cylindrical structure, the lower end of the guide rod is fixedly connected to the top surface of the base, and the slot is formed on the circumferential surface of the guide rod near the top of the guide rod, and the slot is an annular groove.

[0012] In a preferred embodiment of this utility model, the anti-detachment piece is a half-ring, and the two anti-detachment pieces together form a closed ring. The inner diameter of the ring is equal to the diameter of the slot, and the outer diameter of the ring is greater than the diameter of the guide rod.

[0013] In a preferred embodiment of this utility model, the end plate is a ring, the central hole of the end plate is adapted to the guide rod, and the end plate is positioned below the anti-detachment piece.

[0014] In a preferred embodiment of the present invention, the support assembly further includes a first reset spring and a second reset spring, both of which are sleeved on the guide rod. The first reset spring is located below the second washer, and the second reset spring is located between the third washer and the end plate.

[0015] In a preferred embodiment of the present invention, the support assembly further includes a first washer, which is slidably connected to the guide rod, the first washer being located below the second washer, and the first return spring being located between the first washer and the second washer.

[0016] In a preferred embodiment of the present invention, the sorting box forms a box body with an opening at the top and one side, and a groove for discharging material is provided at the bottom of the sorting box. At least two sieve plates with different mesh sizes are provided inside the cavity of the sorting box.

[0017] Beneficial effects

[0018] This utility model provides a modular multi-stage screening equipment for recycled concrete aggregates. It has the following beneficial effects:

[0019] 1. This modular multi-stage screening equipment for recycled concrete aggregates involves placing two anti-detachment plates into the slots, releasing the end plate, and causing the end plate to move upwards. The lower ends of the two anti-detachment plates fall into the limiting grooves. Simultaneously, the upper ends of the anti-detachment plates abut against the inner top surface of the guide rod located in the slot. The sorting box is elastically connected through the first and second return springs. When the sorting box vibrates, the ear plate pushes the second and third pads to displace and squeeze the first or second return spring. The pressure exerted on the anti-detachment plates by the end plate causes the anti-detachment plates to form a limit at the end of the guide rod, preventing the ear plate from falling off the guide rod. No nuts are required for tightening, resulting in good vibration resistance. It also does not affect the vibration screening of the sorting box, and is easy to disassemble and assemble.

[0020] 2. This modular multi-stage screening equipment for recycled concrete aggregates can also use the same support components to flexibly connect the screen plates to the sorting boxes. When using support components to install the screen plates and sorting boxes, it is convenient to install screen plates with different mesh sizes according to needs, control the screening size, and make the equipment more flexible to use.

[0021] 3. This modular multi-stage screening equipment for recycled concrete aggregates allows for the detachable connection of the sorting box and the base, enabling a modular design for the entire device and facilitating transportation and transfer. Attached Figure Description

[0022] Figure 1 This is one of the overall perspective views of this utility model;

[0023] Figure 2 This is the second overall perspective view of the present utility model;

[0024] Figure 3 This is a perspective view of the base of this utility model;

[0025] Figure 4 This is a schematic diagram of the installation of the sorting box and support components of this utility model;

[0026] Figure 5 This is an exploded view of the support component of this utility model.

[0027] Legend: 10. Base; 11. Sorting box; 12. Screen plate; 13. Ear plate; 20. Guide rod; 21. First gasket; 22. Second gasket; 23. Third gasket; 24. First return spring; 25. Second return spring; 26. End plate; 27. Anti-detachment plate; 28. Slot; 29. ​​Limiting slot. Detailed Implementation

[0028] Modular multi-stage screening equipment for recycled concrete aggregates, such as Figure 1 and Figure 2 As shown, it includes:

[0029] The base 10 and the sorting box 11 are detachably mounted on the base 10. The sorting box 11 has a sieve plate 12 inside its cavity. The outer wall of the base 10 is fixedly installed with an ear plate 13. Specifically, the base 10 forms an I-beam structure. By installing the sorting box 11 on the top of the base 10 and installing a vibration motor on the outer wall of the sorting box 11, the crushed aggregate falling is screened by the vibration of the sorting box 11 and the sieve plate 12. The sorting box 11 can be detached and connected to the base 10, which realizes the modular design of the whole device and facilitates transportation and transfer.

[0030] like Figure 4 As shown, the sorting box 11 forms a box with an opening at the top and one side. The bottom of the sorting box 11 is provided with a trough for discharging materials. At least two screen plates 12 with different mesh sizes are provided inside the cavity of the sorting box 11. The screen plates 12 with different mesh sizes are used to achieve the grading and screening of aggregates. The screened powder falls from the trough into the container below the sorting box 11, and the pebble is discharged to one side of the sorting box 11.

[0031] like Figure 2 , Figure 4 and Figure 5 As shown, a support assembly is disposed between the ear plate 13 and the base 10 to achieve an elastic connection of the sorting box 11. The support assembly includes a guide rod 20, a second gasket 22, a third gasket 23, anti-detachment pieces 27, and a slot 28. The guide rod 20 is fixedly connected to the base 10 and passes through the ear plate 13. The second gasket 22 and the third gasket 23 are both slidably connected to the guide rod 20. The second gasket 22 and the third gasket 23 are located below and above the ear plate 13, respectively. A slot 28 is opened on the side wall of the guide rod 20, and two anti-detachment pieces 27 are engaged in the slot 28. A second return spring 25 can push the anti-detachment pieces 27. The support assembly also includes an end plate 26 and a limiting groove 29. The end plate 26 is slidably connected to the guide rod 20. A limiting groove 29 is opened on the top of the end plate 26 to limit the two anti-detachment pieces 27. The anti-detachment piece 27 can fall into the limiting groove 29. The bottom of the anti-detachment piece 27 can be chamfered to form a slope. The inner bottom surface of the limiting groove 29 can be chamfered to form a slope that matches the bottom of the anti-detachment piece 27. When the end plate 26 abuts against the two anti-detachment pieces, it can generate a centripetal force towards the guide rod 20, so that the two anti-detachment pieces 27 close. The guide rod 20 forms a cylindrical structure. The lower end of the guide rod 20 is fixedly connected to the top surface of the base 10. The slot 28 is opened on the circumferential surface of the guide rod 20 near the top of the guide rod 20. The slot 28 is an annular slot. The anti-detachment piece 27 is a half-ring. The two anti-detachment pieces 27 together form a closed ring. The inner diameter of the ring is equal to the diameter of the slot 28. The outer diameter of the ring is greater than the diameter of the guide rod 20. The end plate 26 is a ring. The center hole of the end plate 26 matches the guide rod 20. The end plate 26 is set below the anti-detachment piece 27.

[0032] In this design, considering that the sorting box 11 is vibrating when screening materials on the base 10, locking the sorting box 11 and the base 10 with bolts and nuts could easily cause the bolts and nuts to loosen, leading to the sorting box 11 falling off. To ensure the stability of the sorting box 11 under vibration, when assembling the sorting box 11 and the base 10, the first shim 21 is first placed on the guide rod 20, and the first shim 21 is lowered to the top surface of the base 10. Then, the first return spring 24 is placed on top, followed by the second shim 22. The mounting hole on the ear plate 13 is aligned with the guide rod 20 and lowered. Then, the third shim 23 is placed on top, and the second return spring 25 is placed on the third shim 23. The end plate 26 is then placed on the guide rod 20 and pressed down, causing the second return spring 25 to be compressed. At this time, the end plate 26 is located... Below the slot 28, two anti-detachment pieces 27 are placed into the slot 28 and the end plate 26 is released. The end plate 26 moves upward, and the lower ends of the two anti-detachment pieces 27 fall into the limiting groove 29. At the same time, the upper ends of the anti-detachment pieces 27 abut against the inner top surface of the guide rod 20 located in the slot 28. The sorting box 11 is elastically connected through the first reset spring 24 and the second reset spring 25. When the sorting box 11 vibrates, the ear plate 13 can push the second pad 22 and the third pad 23 to displace and squeeze the first reset spring 24 or the second reset spring 25. The end plate 26 applies a squeezing force to the anti-detachment pieces 27, and the anti-detachment pieces 27 form a limit at the end of the guide rod 20, so that the ear plate 13 will not fall off the guide rod 20. No nuts are needed for tightening, the vibration effect is good, and it will not affect the vibration screening of the sorting box 11. It is easy to disassemble and assemble.

[0033] like Figure 5 As shown, the support assembly also includes a first reset spring 24 and a second reset spring 25. Both the first reset spring 24 and the second reset spring 25 are sleeved on the guide rod 20. The first reset spring 24 is located below the second pad 22, and the second reset spring 25 is located between the third pad 23 and the end plate 26. The support assembly also includes a first pad 21, which is slidably connected to the guide rod 20. The first pad 21 is located below the second pad 22, and the first reset spring 24 is located between the first pad 21 and the second pad 22. The first reset spring 24 and the second reset spring 25 can be springs with different K values. The specific values ​​are not limited here. The sorting box 11 can be made to float up and down by using the first reset spring 24 and the second reset spring 25 with different K values.

[0034] The sieve plate 12 can be directly fixed inside the base 10. The sieve plate 12 can also be elastically connected to the sorting box 11 using the same support component. When the sieve plate 12 and the sorting box 11 are installed using the support component, it is convenient to install sieve plates 12 with different mesh sizes according to the needs, control the screening size, and make the use more flexible.

[0035] It should be noted that the aggregate screened in this scheme is already crushed, and the waste concrete is treated using a "low-temperature heating and particle shaping" process.

[0036] 1. The "low-temperature heating and particle shaping" concrete pretreatment method was adopted, which proved that low-temperature treatment has little impact on aggregate crushing index, thus ensuring that the separated recycled aggregate has good quality.

[0037] 2. This study first proposed and verified the feasibility of using finely ground powder separated by superposition effect as cement admixture.

[0038] The working principle of this utility model is as follows: First, the first pad 21 is put on the guide rod 20 and falls to the top surface of the base 10. Then, the first return spring 24 is placed on it, and then the second pad 22 is put on. The mounting hole on the ear plate 13 is aligned with the guide rod 20 and then it is lowered. Then, the third pad 23 is placed on it, and then the second return spring 25 is placed on the third pad 23. The end plate 26 is put on the guide rod 20 and the end plate 26 is pressed down. The second return spring 25 is squeezed. At this time, the end plate 26 is located below the slot 28. The two anti-detachment pieces 27 are put into the slot 28 and the end plate 26 is released. The end plate 26 moves up and the lower ends of the two anti-detachment pieces 27 fall into the limiting groove 29. At the same time, the upper end of the anti-detachment piece 27 abuts against the inner top surface of the guide rod 20 located in the slot 28, thereby limiting the ear plate 13. The ear plate 13 can be provided with two sets of support components. Two ear plates 13 are symmetrically arranged on both sides of the sorting box 11.

[0039] The sorting box 11 and the screen plate 12 are vibrated by a vibrating motor to screen the aggregate. At least two screen plates 12 with different mesh sizes are set in the cavity of the sorting box 11. The screen plates 12 with different mesh sizes are used to classify and screen the aggregate. The screened powder falls from the trough into the container below the sorting box 11, and the pebble is discharged to one side of the sorting box 11.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A modular multi-stage screening plant for concrete recycled aggregates, characterized by, include: The base (10) and the sorting box (11) detachably disposed above the base (10) are provided with a sieve plate (12) inside the cavity of the sorting box (11) and an ear plate (13) is fixedly installed on the outer wall of the base (10). A support assembly is provided between the ear plate (13) and the base (10) to achieve an elastic connection of the sorting box (11). The support assembly includes a guide rod (20), a second gasket (22), a third gasket (23), an anti-detachment piece (27), and a slot (28). The guide rod (20) is fixedly connected to the base (10). The guide rod (20) passes through the ear plate (13). The second gasket (22) and the third gasket (23) are slidably connected to the guide rod (20). The second gasket (22) and the third gasket (23) are located below and above the ear plate (13), respectively. A slot (28) is provided on the side wall of the guide rod (20). Two anti-detachment pieces (27) are engaged in the slot (28). The second reset spring (25) can push the anti-detachment pieces (27).

2. The modular multi-stage concrete aggregate recycling plant of claim 1, wherein: The support assembly also includes an end plate (26) and a limiting groove (29). The end plate (26) is slidably connected to the guide rod (20). The top of the end plate (26) is provided with a limiting groove (29) for limiting two anti-detachment pieces (27). The anti-detachment pieces (27) can fall into the limiting groove (29).

3. The modular multi-stage concrete aggregate recycling plant of claim 1, wherein: The guide rod (20) forms a cylindrical structure. The lower end of the guide rod (20) is fixedly connected to the top surface of the base (10). The slot (28) is opened on the circumferential surface of the guide rod (20) near the top of the guide rod (20). The slot (28) is an annular groove.

4. The modular multi-stage concrete aggregate recycling plant of claim 1, wherein: The anti-detachment piece (27) is a half-ring. The two anti-detachment pieces (27) together form a closed ring. The inner diameter of the ring is equal to the diameter of the slot (28), and the outer diameter of the ring is greater than the diameter of the guide rod (20).

5. The modular multi-stage concrete aggregate recycling plant of claim 2, wherein: The end plate (26) is a ring, and the center hole of the end plate (26) is adapted to the guide rod (20). The end plate (26) is located below the anti-detachment piece (27).

6. The modular multi-stage concrete aggregate recycling plant of claim 1, wherein: The support assembly also includes a first reset spring (24) and a second reset spring (25). The first reset spring (24) and the second reset spring (25) are both sleeved on the guide rod (20). The first reset spring (24) is located below the second pad (22), and the second reset spring (25) is located between the third pad (23) and the end plate (26).

7. The modular multi-stage concrete aggregate recycling plant of claim 6, wherein: The support assembly also includes a first pad (21), which is slidably connected to the guide rod (20). The first pad (21) is located below the second pad (22), and the first reset spring (24) is located between the first pad (21) and the second pad (22).

8. The modular multi-stage concrete aggregate recycling plant of claim 1, wherein: The sorting box (11) forms a box with an opening at the top and one side. The bottom of the sorting box (11) is provided with a slot for discharging materials. At least two sieve plates (12) with different mesh sizes are provided inside the cavity of the sorting box (11).

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