Recycled aggregate concrete screening device
By introducing a rocking breaking mechanism and a barbed structure into the vibrating screening device, the problem of difficult to break agglomerate materials is solved, and efficient aggregate screening and recycling are achieved.
Patent Information
- Application Number
- CN202422212350.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-10
AI Technical Summary
In the prior art, the vibration screening method is difficult to effectively crush the agglomerated materials in construction waste, resulting in low quality of aggregates and requires multiple screening treatments.
The recycled aggregate concrete screening device including a rocking cracking mechanism is adopted. Through the cooperation of the barbed structure in the frame and the reinforcement spring, the crushing and screening of materials are achieved, thereby increasing the cracking effect and screening efficiency.
It improves the recycling rate of recyclable gravel and sand in construction waste, reduces the need for multiple screenings, and improves the quality of aggregates.
Smart Images
Figure CN223128594U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of recycled aggregate concrete processing, in particular to a recycled aggregate concrete screening device. Background Art
[0002] Recycled aggregate concrete is made from construction waste such as old buildings, bridges, roads, etc. that are demolished by blasting. After sorting, the materials that can be used as concrete aggregates are recycled and then mixed with concrete slurry to form aggregate concrete that can be used as building structure aggregates.
[0003] Specifically, with the development of urban construction, a large number of obsolete and old building structures including houses, bridges, and roads need to be demolished and rebuilt, and the demolition of building structures will inevitably generate a large amount of construction waste. Since construction waste is solid waste, it is more difficult to deal with it in an environmentally friendly way. In addition, construction waste accounts for a large proportion of urban waste. Therefore, facing the huge amount of construction waste, how to deal with it in an environmentally friendly and harmless way has become a difficulty in urban development.
[0004] At present, the more environmentally friendly approach is to recycle and reprocess construction waste to form usable building materials such as concrete aggregates. In the recycling process, it is necessary to screen the construction waste, and the aggregate (including gravel, sand) is separated from the debris after screening. Because most of the construction waste is blocky, it is necessary to pre-crush it into small pieces during the sorting process. The small pieces still contain a large amount of agglomerated materials and powder materials, including concrete sand, and the agglomerated materials contain a large amount of sand and gravel. Therefore, during the work process, the agglomerated materials need to be crushed and the mixed soil layer including sand and gravel is removed. At present, the more conventional approach is to remove the encapsulation layer of the agglomerated material under vibration and sieve it by vibrating screening. However, during the processing, due to the large hardness of a large amount of agglomerated materials, it is difficult to crush and remove the encapsulation layer (concrete) during the vibrating screening process, resulting in the low quality of the aggregate sorted (insufficient removal of the encapsulation layer), and it is often necessary to perform secondary screening or even multiple screening processes. Utility Model Content
[0005] Based on the above background, the purpose of the utility model is to provide a recycled aggregate concrete screening device.
[0006] In order to achieve the above objectives, the utility model adopts the following technical solutions:
[0007] A recycled aggregate concrete screening device comprises a vibrating screen mechanism, wherein the vibrating screen mechanism comprises a vibrating screen frame, wherein a screen bar component located at the lower end is fixedly connected to the vibrating screen frame, and the screen bar component is used to screen materials; the recycled aggregate concrete screening device also comprises a swing material breaking mechanism installed in the vibrating screen frame;
[0008] The swing material breaking mechanism includes a swing frame, and a number of strengthening springs are fixedly connected to the front and rear side walls of the swing frame, and the strengthening springs are fixedly connected to the inner side walls of the vibrating screen frame;
[0009] A number of breaking structures arranged in parallel are fixedly connected inside the swing frame. The breaking structure includes a rectangular steel plate part, and a number of barbed structures are integrally formed on the top of the rectangular steel plate part. The barbed structure includes a main barb part arranged obliquely upward and a blocking barb part arranged at an angle with the main barb part;
[0010] During the material breaking process, the material is broken by the main barb part and the blocking barb part, and after being broken, it enters the sieve rod component for sieving.
[0011] Preferably, the sieve rod component includes a frame fixedly connected inside the vibrating screen frame, and a number of sieve rods are fixedly connected inside the frame.
[0012] Preferably, a V-shaped material retention structure is formed between the main barb part and the blocking barb part. The broken concrete blocks are retained on the V-shaped material retention structure and are broken by the contacting main barb part and blocking barb part.
[0013] Preferably, two sliding rolling parts arranged at intervals in the front and rear are respectively fixedly connected to the left and right side walls of the swing frame, and long sliding openings for slidingly connecting the sliding rolling parts are respectively opened on the left and right side walls of the vibrating screen frame.
[0014] Preferably, the sliding rolling part includes a long sliding seat penetrating through the long sliding opening.
[0015] Preferably, the sliding rolling part further includes a number of rollers fixedly connected to the top and bottom positions of the long sliding seat, and the rollers are in contact with and roll on the top and bottom positions inside the long sliding opening;
[0016] The roller includes a wheel frame fixedly installed on the long sliding seat and a wheel body rotatably connected to the wheel frame.
[0017] Preferably, anti-derailment grooves for limiting the wheel body are respectively opened at the top and bottom inside the long sliding opening, and the wheel body is limited to roll inside the anti-derailment grooves.
[0018] Preferably, the vibrating screen mechanism further includes a number of vibrating girders fixedly connected to the bottom position of the vibrating screen frame, and vibrating motors are installed on the vibrating girders.
[0019] Preferably, two spring frames arranged at intervals in the left and right are respectively fixedly connected to the front and rear side walls of the vibrating screen frame;
[0020] The spring frame includes a spring seat welded and fixed to the vibrating screen frame. A support and strengthening spring is fixedly connected to the bottom of the spring seat. A spring base is fixedly connected to the bottom of the support and strengthening spring. A support frame is fixedly connected to the bottom of the spring base;
[0021] Limit spring columns sleeved inside the support and strengthening spring are respectively fixedly connected to the bottom of the spring seat and the top of the spring base.
[0022] The utility model has the following beneficial effects:
[0023] 1. During the working process, when the whole device vibrates, at this time, due to the certain amplitude of the vibrating screen frame, under the action of the strengthening spring, the swing frame also vibrates and has a weak front-back swinging amplitude, thereby realizing an increase in the material breaking effect during the material breaking process and an increase in the effect of the broken material passing through the gaps between the material breaking structures in the swing frame.
[0024] 2. During the working process, the materials are poured into the swing frame in batches. At this time, a large number of caked materials are resisted against the main thorn part and the blocking thorn part for breaking under the action of the V-shaped material retention structure. During the vibrating and sieving process, the vibration and weak swing of the swing frame promote the main thorn part and the blocking thorn part to break the materials. During the breaking process, the concrete coating layer on the outer layer of stones and sand and gravel is more easily peeled off under the breaking of the main thorn part and the blocking thorn part, realizing the recycling treatment of recyclable crushed stones, sand and gravel and other mineral materials.
[0025] 3. The sliding rolling member includes a long sliding seat penetrating through the long sliding opening. The sliding rolling member further includes a plurality of rollers fixedly connected to the top and bottom positions of the long sliding seat, and the rollers are in contact with and roll on the top and bottom positions inside the long sliding opening; the roller includes a wheel frame fixedly installed on the long sliding seat and a wheel body rotatably connected to the wheel frame. It is realized that during the swinging process of the swing frame through the strengthening spring, the rollers increase the flexibility of the swing in a contact-rolling manner, and under the support of the rollers, the load force of the strengthening spring is greatly reduced, promoting the balance during the telescopic process of the strengthening spring, improving the swinging stability and flexibility of the swing frame, and further promoting the crushing of mineral materials. Description of the Drawings
[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to the structures shown in these drawings.
[0027] Figure 1 It is the overall structure schematic diagram in the embodiment of the present utility model;
[0028] Figure 2 It is a schematic structural diagram of the swing material breaking mechanism in the embodiment of the present utility model;
[0029] Figure 3 It is a schematic structural diagram of the barbed structure in the embodiment of the present utility model;
[0030] Figure 4 It is a schematic structural diagram of the roller rolling in the long sliding opening in the embodiment of the present utility model;
[0031] Figure 5 For the embodiment of the present utility model Figure 1 It is a schematic structural diagram from another perspective;
[0032] Figure 6 For the embodiment of the present utility model Figure 1 It is a top view;
[0033] Figure 7 It is a schematic structural diagram of the swing material breaking mechanism installed on the vibrating screen frame in the embodiment of the present utility model.
[0034] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments
[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0036] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.
[0037] In addition, the descriptions such as "first" and "second" in the present utility model are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
[0038] Example 1
[0039] As Figure 1-7 shown, a screening device for recycled aggregate concrete includes a vibrating screen mechanism. The main structure of the vibrating screen mechanism is the same as that of the existing vibrating screen. Specifically, the vibrating screen mechanism includes a vibrating screen frame 1, which vibrates in the same way as the existing vibrating screen. Additionally, the vibrating screen mechanism further includes a number of vibrating girders 4 fixedly connected to the bottom of the vibrating screen frame 1, and a vibrating motor 41 is installed on the vibrating girder 4. During operation, the vibrating motor 41 - vibrating girder 4 generates vibration, causing the vibrating screen frame 1 to vibrate.
[0040] Meanwhile, similar to the existing vibrating screen, two spring frames 2 are respectively and fixedly connected to the front and rear side walls of the vibrating screen frame 1 at left - right intervals; the spring frame 2 includes a spring seat welded and fixed to the vibrating screen frame 1. A support and strengthening spring is fixedly connected to the bottom of the spring seat, a spring base is fixedly connected to the bottom of the support and strengthening spring, and a support frame is fixedly connected to the bottom of the spring base; a limit spring column sleeved inside the support and strengthening spring is respectively fixedly connected to the bottom of the spring seat and the top of the spring base (the limit spring column is used to increase the stability of the screen frame vibration during the vibrating screening process).
[0041] A larger amplitude is formed during the vibration through the spring frame structure, thereby improving the screening effect.
[0042] Similar to the existing vibrating screen, a screen rod component is fixedly connected inside the vibrating screen frame 1 at the lower end position, and the screen rod component is used for screening materials. Specifically, the screen rod component includes a frame 5 fixedly connected inside the vibrating screen frame 1, and a number of screen rods 51 are fixedly connected inside the frame 5 (for convenient discharging, a matching guide plate 11 is fixedly connected to the right end of the vibrating screen frame 1). Fine particles generated during screening, such as sand and concrete powder, pass through the gaps between the screen rods 51, while larger particle blocks, such as small stones, are intercepted by the screen rods and discharged, achieving separation.
[0043] Example 2
[0044] As Figure 1-7 shown, on the basis of the structure of Example 1, in order to fully crush the pre - crushed concrete blocks and break and peel off the concrete outer layer wrapping the aggregate to facilitate the separation of the aggregate (such as crushed stone, sand and gravel), the screening device for recycled aggregate concrete further includes a swinging material - breaking mechanism 3 installed inside the vibrating screen frame 1.
[0045] Specifically, the swinging material - breaking mechanism 3 includes a swing frame 31. A number of strengthening springs 33 (the strengthening springs 33 are springs with a thicker diameter) are fixedly connected to the front and rear side walls of the swing frame 31, and the strengthening springs 33 are fixedly connected to the inner side wall of the vibrating screen frame 1.
[0046] During the working process, when the entire device vibrates, at this time, due to the certain amplitude of the vibrating screen frame 1, under the action of the reinforcing spring 33, the swing frame 31 also vibrates and has a weak swinging amplitude back and forth, thereby realizing the effect of increasing the material breaking effect during the material breaking process and increasing the passing of the broken material through the gaps between the material breaking structures in the swing frame 31. With the cooperation of multiple reinforcing springs 33, the ore load is realized. During the actual working process, in order to increase the stability of the swing, in accordance with the existing conventional method of increasing the stability of spring expansion and contraction, guide columns are welded on the side walls of the swing frame 31 and the vibrating screen frame 1 and sleeved into the cavities of the reinforcing springs 33. The guide columns support the reinforcing springs 33 on the one hand, and on the other hand, during the expansion and contraction process of the reinforcing springs 33, the stability of the expansion and contraction of the reinforcing springs 33 is increased, and the stability of the swing of the swing frame 31 is maintained.
[0047] Specifically, several parallel arranged material breaking structures 32 (there are gaps between adjacent material breaking structures 32, and the material breaking structures 32 are arranged in a front-back parallel manner) are fixedly connected inside the swing frame 31 (a frame structure formed by welding steel frames, having a gap with the side wall of the vibrating screen frame 1), and the material breaking structure 32 includes a rectangular steel plate part 321 (the rectangular steel plate part 321 is fixed on both sides inside the swing frame 31 by welding).
[0048] At the same time, several barbed structures 322 are integrally formed on the top of the rectangular steel plate part 321, and the barbed structure 322 includes a main barb part 3221 arranged obliquely upward and a blocking barb part 3222 arranged at an angle with the main barb part 3221. During the material breaking process, the material is broken by the main barb part 3221 and the blocking barb part 3222, and after being broken, it enters the sieve rod component for sieving.
[0049] Specifically, a V-shaped material retention structure A is formed between the main barb part 3221 and the blocking barb part 3222, and the broken concrete blocks are retained on the V-shaped material retention structure A and are broken by the contacting main barb part 3221 and blocking barb part 3222.
[0050] During the working process, the material is poured into the swing frame 31 in batches. At this time, a large number of agglomerated materials are broken by the main barb part 3221 and the blocking barb part 3222 under the action of the V-shaped material retention structure A. During the vibrating sieving process, the vibration and weak swing of the swing frame 31 promote the main barb part 3221 and the blocking barb part 3222 to break the material. During the breaking process, the concrete coating layer on the outer layer of the stones and sand is more easily peeled off under the breaking of the main barb part 3221 and the blocking barb part 3222, realizing the recycling of the recoverable crushed stones, sand and other ore materials.
[0051] Example 3
[0052] Such as Figure 1-7As shown in the figure, on the basis of the structure of Embodiment 2, in order to increase the swing amplitude of the swing frame 31, two sliding members arranged at intervals before and after are fixedly connected to the left and right side walls of the swing frame 31 respectively, and long sliding openings 12 for slidingly connecting the sliding members are respectively formed on the left and right side walls of the vibrating screen frame 1.
[0053] Specifically, the sliding member includes a long sliding seat 34 penetrating through the long sliding opening 12. The sliding member further includes a plurality of rollers fixedly connected to the top and bottom positions of the long sliding seat 34, and the rollers are in contact with and roll on the top and bottom positions in the long sliding opening 12; the roller includes a wheel frame 351 fixedly installed on the long sliding seat 34 and a wheel body 35 rotatably connected to the wheel frame 351.
[0054] During the swinging process of the swing frame 31 through the strengthening spring 33, the rollers increase the flexibility of the swing in a way of contacting and rolling, and with the support of the rollers, the load force of the strengthening spring 33 is greatly reduced, promoting the balance during the telescopic process of the strengthening spring 33, improving the swinging stability and flexibility of the swing frame 31, and further promoting the crushing of ore materials.
[0055] In order to prevent the wheel body 35 from derailing (detaching from the long sliding opening 12), according to the existing limited-position rolling mode of the rollers, anti-derailing grooves for limiting the wheel body 35 are respectively formed at the top and bottom in the long sliding opening 12, and the wheel body 35 is limited to roll in the anti-derailing grooves (not shown in the figure).
[0056] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the substantial scope of the present invention should also fall within the protection scope of the present invention.
Claims
1. A screening device for recycled aggregate concrete, comprising a vibrating screen mechanism. The vibrating screen mechanism includes a vibrating screen frame, and a screen rod component fixedly connected inside the vibrating screen frame at a lower position. The screen rod component is used for screening materials; it is characterized in that, The regenerated aggregate concrete screening device further includes a swing material breaking mechanism installed inside the vibrating screen frame; The swing material breaking mechanism includes a swing frame, and a plurality of reinforcing springs are fixedly connected to the front and rear side walls of the swing frame, and the reinforcing springs are fixedly connected to the inner side walls of the vibrating screen frame; A plurality of parallelly arranged material breaking structures are fixedly connected inside the swing frame. The material breaking structure includes a rectangular steel plate part, and a plurality of barbed structures are integrally formed at the top of the rectangular steel plate part. The barbed structure includes a main barb part arranged obliquely upward and a barb blocking part arranged at an angle with the main barb part; During the material breaking process, the material is broken by the main barb part and the barb blocking part, and after being broken, it enters the sieve rod component for sieving.
2. The screening device for recycled aggregate concrete according to claim 1, characterized in that The sieve rod component includes a frame fixedly connected inside the vibrating screen frame, and a plurality of sieve rods are fixedly connected inside the frame.
3. The regenerated aggregate concrete screening device according to claim 1, characterized in that, A V-shaped material retention structure is formed between the main barb part and the barb blocking part. The broken concrete blocks are retained on the V-shaped material retention structure and are broken by the contacting main barb part and barb blocking part.
4. The screening device for recycled aggregate concrete according to claim 1, characterized in that, Two sliding rollers arranged at intervals in the front and rear are respectively fixedly connected to the left and right side walls of the swing frame, and long sliding openings for slidably connecting the sliding rollers are respectively formed in the left and right side walls of the vibrating screen frame.
5. The screening device for recycled aggregate concrete according to claim 4, characterized in that, The sliding roller includes a long sliding seat penetrating through the long sliding opening.
6. The screening device for recycled aggregate concrete according to claim 5, characterized in that, The sliding roller further includes a plurality of rollers fixedly connected to the top and bottom positions of the long sliding seat, and the rollers abut and roll on the top and bottom positions inside the long sliding opening; The roller includes a wheel frame fixedly installed on the long sliding seat and a wheel body rotatably connected to the wheel frame.
7. The recycled aggregate concrete screening device according to claim 6, characterized in that, Anti-derailment grooves for limiting the wheel body are respectively formed at the top and bottom inside the long sliding opening, and the wheel body is limited to roll inside the anti-derailment grooves.
8. The screening device for recycled aggregate concrete according to claim 1, characterized in that, The vibrating screen mechanism further includes a plurality of vibrating girders fixedly connected to the bottom position of the vibrating screen frame, and vibrating motors are installed on the vibrating girders.
9. The screening device for recycled aggregate concrete according to claim 1, wherein Two spring frames arranged at intervals in the left and right are respectively fixedly connected to the front and rear side walls of the vibrating screen frame; The spring frame includes a spring seat welded and fixed to the vibrating screen frame. A supporting reinforcing spring is fixedly connected to the bottom of the spring seat, a spring base is fixedly connected to the bottom of the supporting reinforcing spring, and a support frame is fixedly connected to the bottom of the spring base; Limiting spring columns sleeved inside the supporting reinforcing spring are respectively fixedly connected to the bottom of the spring seat and the top of the spring base.