Efficient crushing device for resourceful treatment of construction waste

Abstract

The utility model provides an efficient crushing device for resourceful treatment of construction waste. The efficient crushing device comprises a shell, a feeding port is formed in the top of the shell, a first discharging port is formed in the bottom of the front end of the shell, and a second discharging port is formed in the bottom of the rear end of the shell; the material screening and conveying system is arranged at the front end in the shell and comprises a first motor and a roller body set driven by the first motor, the roller body set is located below the feeding port and inclines downwards from the feeding port side to the inner side of the shell, the roller body set is composed of a plurality of roller bodies arranged in parallel, and a material falling gap is formed between every two adjacent roller bodies; the small-particle-size material conveying system is located below the material screening and conveying system and comprises a second motor and a belt conveyor driven by the second motor, the belt conveyor inclines downwards from the inner side of the shell to the first discharging opening, and the conveying direction of the belt conveyor is opposite to the conveying direction of the roller body set; and the large-particle-size material crushing system comprises a third motor, a rotor, a plate hammer and an impact plate.

Description

Technical Field

[0001] The utility model relates to the technical field of construction waste treatment, in particular to a high-efficiency crushing device for resource treatment of construction waste. Background Art

[0002] Construction waste is a multi-component mixture, primarily composed of concrete, bricks, and soil, with smaller amounts of metal, wood, and waste plastic. Recycling construction waste not only addresses the environmental pollution caused by its accumulation, but also produces recycled building materials for urban development, reducing the need for sand and stone mining.

[0003] Crushing is a core technology for producing recycled aggregate from construction waste. Crushing technology not only impacts production capacity and energy consumption, but also the particle shape and size distribution of recycled aggregate, directly impacting the quality and economic benefits of the recycled aggregate product. Construction waste is medium to soft in strength and prone to cracks. Crushing methods primarily include impact crushing and extrusion crushing. Impact crushers are a highly efficient method used in resource recovery production lines.

[0004] The impact crusher utilizes impact to crush material. Material entering the crusher is impacted by the impact plate within the rotor's rotating zone and flung at high speed toward the impact plate, breaking it into pieces. Its advantages include high crushing efficiency, good product shape, reduced number of crushing stages, and simplified production processes. However, its disadvantages are also significant: due to the high speed and regular rotation of the crushing rotor, material resides in the crushing chamber for an extended period of time, resulting in high rotor wear. Traditionally, the feed is fed from the side, with the feed opening angled to allow for gravity-driven sliding feed. In practice, moist soil particles in the crushed material adhere to the bottom and side walls of the feed opening. Due to the vibration of the crushing equipment, the soil accumulates and compacts at the bottom, causing blockage and requiring machine shutdown for cleaning. Increasing the feed opening angle fails to buffer the feed volume, preventing the problem of instantaneous high feed volumes into the impact crusher chamber. Furthermore, excessively large inclinations prevent the material from providing a suitable initial angle of impact with the impact plate, significantly reducing crushing efficiency. Utility Model Content

[0005] In order to solve the above problems, the utility model aims to provide a high-efficiency crushing device for resource processing of construction waste.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] The utility model provides a high-efficiency crushing device for resource processing of construction waste, which is characterized by comprising: a shell, a material screening and conveying system, a small-size material conveying system and a large-size material crushing system, wherein a feed port is provided on the top of the shell, a first discharge port is provided on the front bottom of the shell, and a second discharge port is provided on the rear bottom of the shell; the material screening and conveying system is arranged at the front end inside the shell, and comprises a first motor and a roller group driven by the first motor, the roller group is located below the feed port, and is inclined downward from the feed port side to the inner side of the shell, and the roller group is composed of a plurality of rollers arranged in parallel , a gap for material falling is formed between adjacent rollers; the small-size material conveying system is located below the material screening and conveying system, and includes a second motor and a belt conveyor driven by the second motor. The belt conveyor is downwardly inclined from the inside of the shell to the first discharge port, and the conveying direction of the belt conveyor is opposite to the conveying direction of the roller group; the large-size material crushing system includes a third motor, a rotor, a plate hammer, and an impact plate; the rotor is driven by the third motor, is located at the rear end of the shell and above the second discharge port; several plate hammers are distributed and fixed on the side of the rotor; the impact plate is fixed on the shell and is located on the periphery of the rotor.

[0008] Furthermore, in the high-efficiency crushing device for resource processing of construction waste provided by the present invention, it can also have the following characteristics: wherein, the axial cross-section of the rotor is elliptical, and the rotation center of the rotor is the center of the ellipse.

[0009] Furthermore, the high-efficiency crushing device for resource processing of construction waste provided by the present invention may also have the following features: the number of plate hammers is six, and the plate hammers have inclined surfaces.

[0010] Furthermore, in the high-efficiency crushing device for resource processing of construction waste provided by the present invention, it can also have the following characteristics: wherein the impact plate includes a top impact plate arranged on the top of the shell and a side impact plate arranged on the side of the shell.

[0011] Furthermore, the high-efficiency crushing device for resource processing of construction waste provided by the present invention may also have the following feature: a plurality of staggered rectangular protrusions are provided on the circumferential surface of the roller body.

[0012] Furthermore, in the high-efficiency crushing device for resource processing of construction waste provided by the utility model, it can also have the following characteristics: wherein, the first motor is connected to the roller body located at the top, the roller body is the active roller, and the remaining roller bodies are driven rollers, the active roller and the adjacent driven rollers are connected by a transmission wheel and a transmission belt, and the two adjacent driven rollers are connected by a transmission wheel and a transmission belt.

[0013] Furthermore, in the high-efficiency crushing device for resource processing of construction waste provided by the present invention, there may also be such a feature: wherein, the belt surface of the belt conveyor is provided with raised textures.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The efficient crushing device for recycling construction waste provided by this utility model optimizes the position of the discharge port to ensure smooth entry of raw materials while further screening the raw materials. Small-sized raw materials are directly discharged, improving crushing efficiency. Large-sized raw materials enter the crushing area and form uneven, multi-track collisions without dead angles. This greatly improves crushing efficiency, extends the service life of the crushing rotor, and greatly reduces equipment feed blockage, overcoming the shortcomings of existing technologies. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a high-efficiency crushing device for resource processing of construction waste in an embodiment of the present utility model;

[0017] Figure 2 It is a top view of the material screening and conveying system in an embodiment of the present utility model;

[0018] Figure 3 It is a top view of the belt conveyor in the embodiment of the present utility model.

[0019] Markings in the figure: shell 1; feed port 11; first discharge port 12; second discharge port 13; material screening and conveying system 2; roller 21; rectangular protrusion 21a; first motor 22; transmission wheel 23; transmission belt 24; bearing 25; small particle size material conveying system 3; belt conveyor 31; raised texture 31a; large particle size material crushing system 4; third motor 41; rotor 42; top impact plate 43; side impact plate 44; hammer 45. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the following embodiments are combined with the accompanying drawings to specifically illustrate the technical solutions of the present invention.

[0021] <Example>

[0022] like Figure 1 As shown, the embodiment of the present invention provides a high-efficiency crushing device for resource processing of construction waste. The device comprises: a housing 1, a material screening and conveying system 2, a small-particle material conveying system 3, and a large-particle material crushing system 4.

[0023] The top of the housing 1 is provided with a feed port 11, the bottom of the front end of the housing 1 is provided with a first discharge port 12, and the bottom of the rear end of the housing 1 is provided with a second discharge port 12. The bottom surface of the front end portion of the housing 1 is higher than the bottom surface of the rear end portion of the housing 1, and the height dimension of the front end portion is smaller than the height dimension of the rear end portion.

[0024] The material screening and conveying system 2 is used to screen out the raw materials with small particle size. Figure 1 and Figure 2 The material screening and conveying system 2 is arranged at the front end inside the shell 1, and includes a first motor 22 and a roller group driven by the first motor 22. The roller group is located below the feed port 11, and is inclined downward from the side of the feed port 11 to the inside of the shell 1. The roller group is composed of a number of parallel rollers. A material drop gap is formed between adjacent rollers 21, and raw materials with small particle size will fall from the gap. The material drop gap between the rollers 21 can be adjusted according to the crushing needs. Adjusting the gap can adjust the particle size of the material coming out of the first discharge port 12. Furthermore, a number of staggered rectangular protrusions are provided on the circumferential surface of the roller 21. On the one hand, the feeding speed becomes stable, and on the other hand, the rotation process of the roller causes the raw materials to vibrate, so that small-sized construction waste materials in the raw materials fall from the gap.

[0025] The drive mode of the roller group is shown in Figure 2 , the first motor 22 is connected to the roller 21 at the top position ( Figure 2 The rightmost roller (see Figure 2) is the active roller, while the remaining rollers 21 are driven rollers. A drive pulley 23 and a drive belt 24 connect the active roller to the adjacent driven roller, and a drive pulley 23 and a drive belt 24 connect the adjacent driven rollers. The drive pulley 23 can be a gear, and the corresponding drive belt 24 a synchronous belt. Alternatively, the drive pulley 23 can be a pulley, and the corresponding drive belt 24 a belt. Both ends of the roller 21 are mounted in bearing blocks 25, which are equipped with bearings and fixed to the side walls of the housing.

[0026] The small particle size material conveying system 3 is located below the material screening and conveying system 2. It is used to convey the small particle size undersize materials falling from the gap to the first discharge port 12 to improve the crushing efficiency. Figure 1 and Figure 3 The small particle size material conveying system 3 includes a second motor (not shown) and a belt conveyor 31 driven by the second motor. The belt conveyor 31 is inclined downward from the inner side of the housing 1 to the first discharge port 12. The conveying direction of the belt conveyor 31 is opposite to the conveying direction of the roller group. Figure 3 As shown, the belt surface of the belt conveyor 31 is provided with raised textures, which increase the friction and stabilize the material transmission speed.

[0027] See Figure 1 The large-size material crushing system 4 includes a third motor 41, a rotor 42, a hammer 45, and an impact plate.

[0028] The rotor 42 is driven by a third motor 41 and is located at the rear end of the housing 1, above the second discharge port 12. A motor-end drive pulley is mounted on the motor shaft of the third motor 41. The axial cross-section of the rotor 42 is elliptical, with the center of rotation of the rotor 42 being the center of the ellipse. The rotor 42 is mounted on a rotating shaft, to which the rotor-end drive pulley is also mounted. The motor-end drive pulley and the rotor-end drive pulley are connected by a transmission belt. The third motor 41 drives the motor-end drive pulley to rotate, thereby rotating the transmission belt, which in turn drives the rotor-end drive pulley, causing the rotating shaft to rotate, driving the rotor 42.

[0029] Several plate hammers 45 are distributed and fixed on the side of the rotor 42. The number of plate hammers 45 is six, and the plate hammers 45 have inclined surfaces, such as Figure 1 Surface A is shown. The impact plates are fixed to the housing 1 and are located outside the rotor 42. They include a top impact plate 43 mounted on the top of the housing 1 and side impact plates 44 mounted on the sides of the housing 1. During high-speed rotation of the rotor, the hammers cause the material to collide within the crushing chamber, crushing it upon impact with the impact plates.

[0030] The working process of the efficient crushing device for resource processing of construction waste in the embodiment of the utility model is as follows:

[0031] The construction waste raw materials are fed into the interior of the shell 1 through the feed port 11. The raw materials will first fall into the material screening and conveying system 2, and the small-sized materials formed by the vibration will fall from the material dropping gap between the rollers 21 and fall into the small-sized material conveying system 3. The small-sized materials are transported to the first discharge port 12 for discharge via the belt conveyor 3. The large-sized materials are further transported by the roller group and enter the large-sized material crushing system 4. The elliptical rotor 42 rotates at a high speed, and the plate hammer 45 causes the materials to form uneven multi-track collisions without dead angles in the crushing chamber. On the basis of the impact crushing of the impact plate, the materials intensify the collisions with each other, and the crushed materials are discharged from the second discharge port 13 below.

[0032] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to fall within the scope of protection of the present invention.

Claims

1. An efficient crushing device for resource processing of construction waste, characterized in that: include: Shell, material screening and conveying system, small particle size material conveying system and large particle size material crushing system, The top of the shell is provided with a feed port, the front bottom of the shell is provided with a first discharge port, and the rear bottom of the shell is provided with a second discharge port; The material screening and conveying system is arranged at the front end of the interior of the shell, and includes a first motor and a roller group driven by the first motor. The roller group is located below the feed port and is inclined downward from the feed port side to the inside of the shell. The roller group is composed of a plurality of rollers arranged in parallel, and a gap for material falling is formed between adjacent rollers. The small particle size material conveying system is located below the material screening and conveying system, and includes a second motor and a belt conveyor driven by the second motor. The belt conveyor is inclined downward from the inner side of the shell to the first discharge port, and the conveying direction of the belt conveyor is opposite to the conveying direction of the roller group. The large-particle material crushing system includes a third motor, a rotor, a blow hammer, and an impact plate; The rotor is driven by the third motor and is located at the rear end of the housing and above the second discharge port; A plurality of plate hammers are distributed and fixed on the side of the rotor; The impact plate is fixed on the shell and is located on the periphery of the rotor.

2. The high-efficiency crushing device for resource processing of construction waste according to claim 1 is characterized in that: in, The axial cross-section of the rotor is elliptical, and the rotation center of the rotor is the center of the ellipse.

3. The high-efficiency crushing device for resource processing of construction waste according to claim 1 is characterized in that: in, The number of the blow bars is six, and the blow bars have inclined surfaces.

4. The high-efficiency crushing device for resource processing of construction waste according to claim 1 is characterized in that: in, The impact plates include a top impact plate arranged on the top of the shell and a side impact plate arranged on the side of the shell.

5. The high-efficiency crushing device for resource processing of construction waste according to claim 1 is characterized in that: in, A plurality of rectangular parallelepiped protrusions are arranged on the circumferential surface of the roller body in staggered distribution.

6. The high-efficiency crushing device for resource processing of construction waste according to claim 1 is characterized in that: in, The first motor is connected to the roller at the top, which is the active roller, and the other rollers are driven rollers. The active roller is connected to the adjacent driven rollers through a transmission wheel and a transmission belt, and the two adjacent driven rollers are connected through a transmission wheel and a transmission belt.

7. The high-efficiency crushing device for resource processing of construction waste according to claim 1 is characterized in that: in, The belt surface of the belt conveyor is provided with raised textures.

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