Construction waste recycling gravel processing and crushing device

Abstract

The utility model discloses a building waste regeneration gravel processing crushing device, including feed cavity and the crushing chamber, still including multilayer broken block cavity, a pair of broken block roller is rotatably installed in multilayer broken block cavity, multilayer broken block cavity sets gradually from top to bottom, and the interval between a pair of broken block roller in each layer broken block cavity gradually reduces, feed cavity is installed in the upper end of the broken block cavity of the most upper layer, and the crushing chamber is installed in the lower end of the broken block cavity of the most lower layer. The utility model discloses through setting multilayer broken block cavity and the broken block roller of gradually reducing interval, realizes gradient crushing system, avoids the jamming phenomenon caused by the big piece waste directly entering small gap crushing mechanism, through setting dustproof curtain at the feed port, and the material is automatically turned over when passing, and closes after passing, blocks the dust overflow of feed port, and the connecting part of feed cavity, broken block cavity and crushing chamber passes the sealing, can effectively reduce the dust emission of crushing process, both protects the health of operator, and reduces the erosion of dust to motor, gear and other components.

Description

Technical Field

[0001] This utility model relates to the field of construction waste crushing technology, specifically a crushing device for recycling construction waste into sand and gravel. Background Technology

[0002] Construction waste recycling refers to the process of transforming waste building materials into recycled aggregates that meet the standards for construction sand and gravel through sorting, crushing, screening, and impurity removal. These recycled aggregates can replace natural sand and gravel in engineering fields such as concrete preparation and road base paving. This not only realizes the resource recycling of construction waste and reduces environmental pollution, but also alleviates the pressure of natural sand and gravel resource shortages and reduces engineering construction costs. However, construction waste has a complex composition and large particle size differences, so it needs to be crushed to refine it to meet the particle size requirements for subsequent screening, processing, and engineering use. Therefore, crushing equipment is required to process construction waste.

[0003] In the prior art, utility model patent application number CN202321983190.4 discloses a crushing equipment for construction waste, including a crusher body, a crushing mechanism installed on the inner side of the crusher body, and a screening component arranged on the inner side of the crusher body. This construction waste crushing equipment, by setting up a screening component and a screening box, allows the crushed material to enter the screening box. When the motor is started, it drives the transmission shaft to rotate, synchronously driving the cam. Under the push of the cam, the abutment moves the movable column. With the cooperation of the spring, the screening box vibrates, allowing the material inside the screening box to be vibrated and screened through the screening mesh. Larger fragments remain in the screening box for secondary screening. The electromagnet is energized, attracting a magnetic block, which in turn moves the locking column upwards, separating the locking column from the locking groove, thus allowing the screening box to be disassembled.

[0004] In actual operation, construction waste has a large particle size difference. Construction waste not only contains small pieces of brick slag but also a large number of large pieces of brick slag. The crushing equipment provided by the above-mentioned patent crushes it through a single crushing mechanism, which is easily jammed by large pieces of brick slag. In fact, large pieces of brick slag may even slip on the crushing mechanism, making it impossible to effectively enter the crushing area to complete the crushing operation, thus causing the crushing operation to be interrupted and seriously affecting the overall efficiency of construction waste recycling. Utility Model Content

[0005] The purpose of this utility model is to provide a crushing device for recycling construction waste into sand and gravel, which aims to improve the existing construction waste crushing devices. Due to the use of a single crushing mechanism, the devices are prone to being jammed by large pieces of brick and slag when processing construction waste with large particle size differences. Large pieces of brick and slag are also prone to slipping on the crushing mechanism and cannot be effectively crushed, which leads to the interruption of crushing operations and low overall efficiency of construction waste recycling.

[0006] This utility model is implemented as follows: A crushing and processing device for recycled sand and gravel from construction waste includes a feeding chamber and a crushing chamber, as well as multiple crushing chambers. Each of the multiple crushing chambers has a pair of crushing rollers rotatably installed. The multiple crushing chambers are arranged sequentially from top to bottom, and the distance between the pair of crushing rollers in each crushing chamber gradually decreases. The feeding chamber is installed at the upper end of the uppermost crushing chamber, and the crushing chamber is installed at the lower end of the lowermost crushing chamber.

[0007] Preferably, it also includes a dust curtain, the feeding chamber includes a feeding port, and the dust curtain is installed on the feeding port and covers the entire feeding port.

[0008] Preferably, the feeding chamber includes a first guide plate, and a pair of first guide plates are inclinedly arranged at the lower port of the feeding chamber. The pair of first guide plates are located above a pair of crushing rollers in the uppermost crushing chamber, and a space for material feeding is left between the pair of first guide plates.

[0009] Preferably, each of the multiple fragmentation chambers includes a second guide plate, and a pair of second guide plates are inclinedly arranged at the lower end of each fragmentation chamber. The pair of second guide plates of the upper fragmentation chamber are located above a pair of fragmentation rollers in the lower fragmentation chamber, and a space for material feeding is left between the pair of second guide plates.

[0010] Preferably, a pair of crushing rollers are rotatably arranged in the crushing chamber, and a pair of second guide plates in the lowest crushing chamber are located above the pair of crushing rollers; a pair of third guide plates are arranged in the crushing chamber below the pair of crushing rollers, and a space for material feeding is left between the pair of third guide plates.

[0011] Preferably, a pair of crushing rollers includes a first spur gear and a first motor. The same end of the pair of crushing rollers extends through the housing of the crushing cavity to the outside and is provided with a first spur gear, and the pair of first spur gears mesh with each other; one end of one of the crushing rollers extends through the housing of the crushing cavity to the outside and is connected to the first motor.

[0012] Preferably, a pair of crushing rollers includes a second spur gear and a second motor. The same end of the pair of crushing rollers extends through the housing of the crushing chamber to the outside and is provided with a second spur gear, and the pair of second spur gears mesh with each other; one end of one of the crushing rollers extends through the housing of the crushing chamber to the outside and is connected to the second motor.

[0013] Preferably, it also includes a protective cover, which covers the first spur gear and the second spur gear.

[0014] Preferably, it also includes sealing gaskets and mounting bolts. The connection between the upper and lower layers of the feeding chamber, the multi-layer crushing chamber and the crushing chamber is provided with sealing gaskets and is fixedly connected by mounting bolts.

[0015] Preferably, the crushing chamber further includes a support leg, and the lower end of the crushing chamber is provided with a support leg for support.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model achieves a gradient crushing system by setting up multi-layer crushing chambers and crushing rollers with gradually decreasing spacing, thus avoiding the jamming phenomenon caused by large pieces of waste directly entering the small-gap crushing mechanism.

[0017] 2. This utility model, by setting a dustproof curtain at the feed inlet, automatically opens when the material passes through and closes afterward, preventing dust from overflowing from the feed inlet. The connection between the feed chamber, the crushing chamber and the grinding chamber is sealed, which can effectively reduce the amount of dust emitted during the crushing process. This not only protects the health of the operators, but also reduces the corrosion of components such as motors and gears by dust, thereby extending the equipment maintenance cycle and reducing operation and maintenance costs. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention without a dustproof curtain and a protective cover. Figure 2 This is a three-dimensional structural diagram of the present invention, which includes a dustproof curtain and a protective cover. Figure 3 This is a cross-sectional view of the overall structure of this utility model; Figure 4 This is a schematic diagram of the fragmentation chamber of this utility model; Figure 5 This is a schematic diagram of the pulverizing chamber of this utility model; Figure 6 This is a utility model Figure 1 A schematic diagram of the structure at point A in the middle.

[0019] In the diagram: 1. Feed chamber; 101. Feed inlet; 102. First guide plate; 2. Crushing chamber; 201. Second guide plate; 3. Crushing chamber; 301. Third guide plate; 302. Support leg; 4. Crushing roller; 401. First spur gear; 402. First motor; 5. Dustproof curtain; 6. Protective cover; 7. Crushing roller; 701. Second spur gear; 702. Second motor; 8. Sealing gasket; 9. Mounting bolt. Detailed Implementation

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details: Example 1 like Figures 1-3 and Figure 6As shown, a crushing and processing device for recycled sand and gravel from construction waste includes a feeding chamber 1, a crushing chamber 3, a multi-layer crushing chamber 2, a sealing gasket 8, mounting bolts 9, and a dust curtain 5. Each of the multi-layer crushing chambers 2 has a pair of crushing rollers 4 rotatably installed. The multi-layer crushing chambers 2 are arranged sequentially from top to bottom. In this embodiment, the crushing chamber 2 has two layers, and the distance between the pair of crushing rollers 4 in each layer gradually decreases. This allows for the gradual crushing of larger pieces of brick slag waste, avoiding jamming or slippage on the crushing mechanism. This ensures that all brick slag waste falling into the crushing chamber 3 is in small pieces, guaranteeing the crushing effect of the crushing chamber 3. The gap between the upper crushing rollers 4 is 5-8 cm, which can crush large pieces of brick slag with a diameter of 10-20 cm into medium-sized pieces with a diameter of 5-8 cm. The gap between the lower crushing rollers 4 is 3-5 cm, further crushing the medium-sized pieces into small pieces with a diameter of 3-5 cm. This gradient crushing method avoids the roller jamming caused by excessive force when large pieces of material directly enter the small-gap crushing roller. Simultaneously, by gradually reducing the crushing gap, the particle size of the crushed material is made more uniform, reducing slippage on the surface of the crushing roller (if large pieces of material are crushed directly, the material easily slides on the roller surface and cannot effectively bear force). The feeding chamber 1 is installed at the upper end of the uppermost crushing chamber 2, and the crushing chamber 3 is installed at the lower end of the lowermost crushing chamber 2. The feeding chamber 1 includes a feed inlet 101, and a dust curtain 5 is installed on the feed inlet 101, covering the entire feed inlet 101. The dust curtain 5 is made of flexible, wear-resistant rubber and consists of multiple rubber strips, each 5-8 cm wide, arranged side-by-side. The upper ends of the rubber strips are fixed to the inner side of the upper edge of the feed inlet 101 by bolts, and the lower ends hang naturally and overlap each other, completely covering the feed inlet 101. When construction waste (such as brick slag) is fed into the inlet, the weight of the material pushes the rubber strip into the feed chamber 1, forming a feeding channel. After the material passes through, the rubber strip returns to its hanging state under its own elasticity, closing the feed inlet again. This effectively prevents dust generated during the crushing process from overflowing from the feed inlet and also prevents external debris from entering the device. The crushing chamber 3 also includes support legs 302, with support legs 302 provided at the lower end of the crushing chamber 3 for support. Sealing gaskets 8 are provided at the connection points between the upper and lower layers of the feed chamber 1, the multi-layer crushing chamber 2, and the crushing chamber 3, and they are fixedly connected by mounting bolts 9. The lower end face of the feed chamber 1, the upper and lower end faces of the crushing chamber 2, and the upper end face of the crushing chamber 3 are all provided with mounting edges. When the feed chamber 1, the multi-layer crushing chamber 2, and the crushing chamber 3 are installed sequentially from top to bottom, sealing gaskets 8 are placed between adjacent mounting edges to ensure the sealing effect of the installation gaps.

[0022] like Figures 1-3As shown, the feeding chamber 1 includes a first guide ramp 102. A pair of first guide ramps 102 are inclinedly arranged at the lower end of the feeding chamber 1. The pair of first guide ramps 102 are located above a pair of crushing rollers 4 in the uppermost crushing chamber 2. A space for material discharge is left between the pair of first guide ramps 102. The pair of first guide ramps 102 are inclined relative to each other, so that the space reserved between the pair of first guide ramps 102 is a downward inclined space for material discharge. This space can not only receive the brick slag waste falling from the upper layer, but also guide it to flow accurately into the next layer of crushing chamber 2. Multiple crushing chambers 2 each include a second guide ramp 201. A pair of second guide ramps 201 are inclinedly arranged at the lower end of each layer of crushing chamber 2. The pair of second guide ramps 201 of the upper layer of crushing chamber 2 are located above a pair of crushing rollers 4 in the lower layer of crushing chamber 2. A space for material discharge is left between the pair of second guide ramps 201. A pair of crushing rollers 7 are rotatably mounted in the crushing chamber 3. A pair of second guide plates 201 in the lowest crushing chamber 2 are positioned above the pair of crushing rollers 7. A pair of third guide plates 301 are positioned below the pair of crushing rollers 7 in the crushing chamber 3, with space between the two third guide plates 301 for material feeding. The second and third guide plates 201 operate on the same principle. The crushing rollers 7 are also made of high-chromium alloy, but their surface is designed with fine, serrated protrusions (tooth height 1-2cm, tooth spacing 1-2cm). The roller diameter is 12-15cm, and its length matches the width of the inner cavity of the crushing chamber 3 (60-80cm). Unlike the coarse crushing function of the crushing roller 4, the crushing roller 7 mainly achieves fine crushing. When the 3-5cm small pieces of material after being crushed in the lower crushing chamber are guided to the pair of crushing rollers 7 by the second guide plate of the lowest crushing chamber, the fine serrated protrusions can grind and squeeze the small pieces of material, further crushing them into recycled sand and gravel particles with a particle size of 0.5-2cm (meeting the particle size requirements of sand and gravel for construction).

[0023] like Figure 1 and Figures 4-6As shown, a pair of crushing rollers 4 includes a first spur gear 401 and a first motor 402. The same end of each crushing roller 4 extends through the housing of the crushing chamber 2 and is equipped with a first spur gear 401, which meshes with each other. One end of one crushing roller 4 extends through the housing of the crushing chamber 2 and is connected to the first motor 402. A pair of crushing rollers 7 includes a second spur gear 701 and a second motor 702. The same end of each crushing roller 7 extends through the housing of the crushing chamber 2 and is equipped with a second spur gear 701, which meshes with each other. One end of one crushing roller 7 extends through the housing of the crushing chamber 3 and is connected to the second motor 702. A protective cover 6 is also included, covering the first spur gear 401 and the second spur gear 701. By providing the protective cover 6 to shield and protect the first spur gear 401 and the second spur gear 701, dust can be prevented from entering between the gears, and personnel can be prevented from accidentally touching the gears and causing injury.

[0024] Example 2 like Figures 1-3 and Figure 6 As shown, a crushing and processing device for recycled sand and gravel from construction waste includes a feeding chamber 1, a crushing chamber 3, a multi-layer crushing chamber 2, sealing gaskets 8, mounting bolts 9, and a dust curtain 5. Each of the multi-layer crushing chambers 2 has a pair of crushing rollers 4 rotatably mounted on it. The multi-layer crushing chambers 2 are arranged sequentially from top to bottom, with the spacing between the pairs of crushing rollers 4 in each layer gradually decreasing. The feeding chamber 1 is installed at the upper end of the uppermost crushing chamber 2, and the crushing chamber 3 is installed at the lower end of the lowermost crushing chamber 2. The feeding chamber 1 includes a feed inlet 101, and the dust curtain 5 is installed on the feed inlet 101, covering the entire feed inlet 101. The crushing chamber 3 also includes support legs 302, with support legs 302 provided at the lower end of the crushing chamber 3 for support. Sealing gaskets 8 are provided at the connection points between the upper and lower layers of the feeding chamber 1, the multi-layer crushing chamber 2, and the crushing chamber 3, and they are fixedly connected by mounting bolts 9.

[0025] like Figures 1-3As shown, the feeding chamber 1 includes a first guide ramp 102. A pair of first guide ramps 102 are inclinedly arranged at the lower end of the feeding chamber 1. The pair of first guide ramps 102 are located above a pair of crushing rollers 4 in the uppermost crushing chamber 2, and a space for material discharge is left between the pair of first guide ramps 102. Multiple crushing chambers 2 each include a second guide ramp 201. A pair of second guide ramps 201 are inclinedly arranged at the lower end of each crushing chamber 2. The pair of second guide ramps 201 in the upper crushing chamber 2 are located above a pair of crushing rollers 4 in the lower crushing chamber 2, and a space for material discharge is left between the pair of second guide ramps 201. A pair of crushing rollers 7 are rotatably arranged in the crushing chamber 3. The pair of second guide ramps 201 in the lowermost crushing chamber 2 are located above a pair of crushing rollers 7. A pair of third guide ramps 301 are arranged in the crushing chamber 3 below a pair of crushing rollers 7, and a space for material discharge is left between the pair of third guide ramps 301.

[0026] like Figure 1 and Figures 4-6 As shown, a pair of crushing rollers 4 includes a first spur gear 401 and a first motor 402. The same end of each crushing roller 4 extends through the housing of the crushing chamber 2 to the outside and is equipped with a first spur gear 401, which meshes with each other. One end of one crushing roller 4 extends through the housing of the crushing chamber 2 and is connected to the first motor 402. A pair of crushing rollers 7 includes a second spur gear 701 and a second motor 702. The same end of each crushing roller 7 extends through the housing of the crushing chamber 2 and is equipped with a second spur gear 701, which meshes with each other. One end of one crushing roller 7 extends through the housing of the crushing chamber 3 and is connected to the second motor 702. A protective cover 6 is also included, which covers the first spur gear 401 and the second spur gear 701.

[0027] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A crushing and processing device for recycled sand and gravel from construction waste, comprising a feeding chamber (1) and a crushing chamber (3), characterized in that, It also includes multiple fragmentation chambers (2), each of which is rotatably equipped with a pair of fragmentation rollers (4). The multiple fragmentation chambers (2) are arranged sequentially from top to bottom, and the distance between the pair of fragmentation rollers (4) in each fragmentation chamber (2) gradually decreases. The feeding chamber (1) is installed at the upper end of the uppermost fragmentation chamber (2), and the crushing chamber (3) is installed at the lower end of the lowermost fragmentation chamber (2).

2. The construction waste recycling and crushing device according to claim 1, characterized in that, It also includes a dust curtain (5), the feeding chamber (1) includes a feeding port (101), the dust curtain (5) is installed on the feeding port (101) and covers the entire feeding port (101).

3. The construction waste recycling and crushing device according to claim 1, characterized in that, The feeding chamber (1) includes a first guide plate (102). A pair of first guide plates (102) are inclinedly arranged at the lower port of the feeding chamber (1). The pair of first guide plates (102) are located above a pair of crushing rollers (4) in the uppermost crushing chamber (2). There is a space for material feeding between the pair of first guide plates (102).

4. The construction waste recycling and crushing device according to claim 1, characterized in that, Each of the multiple fragmentation chambers (2) includes a second guide plate (201). Each layer of the fragmentation chamber (2) has a pair of second guide plates (201) at its lower end. The pair of second guide plates (201) of the upper fragmentation chamber (2) is located above a pair of fragmentation rollers (4) in the lower fragmentation chamber (2). There is a space for material feeding between the pair of second guide plates (201).

5. The construction waste recycling and crushing device according to claim 4, characterized in that, A pair of crushing rollers (7) are rotatably arranged in the crushing chamber (3), and a pair of second guide plates (201) in the lowest crushing chamber (2) are located above the pair of crushing rollers (7); a pair of third guide plates (301) are arranged in the crushing chamber (3) below the pair of crushing rollers (7), and a space for material feeding is left between the pair of third guide plates (301).

6. The construction waste recycling and crushing device according to claim 5, characterized in that, A pair of the crushing rollers (4) includes a first spur gear (401) and a first motor (402). The same end of the pair of crushing rollers (4) extends through the housing of the crushing cavity (2) to the outside and is provided with a first spur gear (401). The pair of first spur gears (401) mesh with each other. One end of one of the crushing rollers (4) extends through the housing of the crushing cavity (2) to the outside and is connected to the first motor (402).

7. The construction waste recycling and crushing device according to claim 6, characterized in that, A pair of crushing rollers (7) includes a second spur gear (701) and a second motor (702). The same end of the pair of crushing rollers (7) extends through the housing of the crushing chamber (2) to the outside and is provided with a second spur gear (701). The pair of second spur gears (701) mesh with each other. One end of one of the crushing rollers (7) extends through the housing of the crushing chamber (3) to the outside and is connected to the second motor (702).

8. The construction waste recycling and crushing device according to claim 7, characterized in that, It also includes a protective cover (6) which covers the first spur gear (401) and the second spur gear (701).

9. The construction waste recycling and crushing device according to claim 1, characterized in that, In addition, it also includes a sealing gasket (8) and a mounting bolt (9). The connection between the upper and lower layers of the feeding chamber (1), the multi-layer crushing chamber (2) and the crushing chamber (3) is provided with a sealing gasket (8) and is fixedly connected by a mounting bolt (9).

10. The construction waste recycling and crushing device according to claim 1, characterized in that, The crushing chamber (3) also includes a support leg (302), and the lower end of the crushing chamber (3) is provided with a support leg (302) for support.

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