Waste concrete crushing, screening and utilizing device

Abstract

The utility model relates to the field of engineering construction, in particular to a waste concrete crushing, screening and utilizing device which comprises a base, a screening device and a crushing device. After waste concrete is smashed, under the action of a guide plate, the smashed concrete can fall to the high position of a fixing plate, under the action of an inclined face of the fixing plate, the smashed concrete can flow downwards in an inclined mode to be discharged, and under the action that the transmission direction of a conveying belt is opposite to the flowing direction of the concrete, the concrete can be discharged more stably. The adsorption duration of a first magnet to flowing materials on a fixing plate is prolonged, in the process that crushed concrete obliquely flows downwards, metal materials such as steel bars and iron materials flowing on the fixing plate are adsorbed under the mutual action of a conveying belt and the first magnet, and the crushing efficiency is improved. And steel bars, iron and other metal materials in the waste concrete can be separated from other materials, the steel bars, the iron and other metal materials are prevented from being smashed again, and therefore the later smashing effect of the waste concrete is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of engineering construction, in particular to a device for crushing, screening and utilizing waste concrete. Background Art

[0002] Waste concrete refers to concrete materials that are no longer used or need to be processed, including abandoned concrete building structures, concrete bricks, concrete gravel, etc. Waste concrete can be recycled through proper treatment and processing. For example, after crushing and screening, the aggregate, cement, sand and other components can be separated and recycled for the manufacture of new building materials or other uses in engineering construction.

[0003] The Chinese patent "A device for crushing and recycling waste concrete" authorization announcement number "CN214487100U" is equipped with a motor to drive the rotating shaft and the crushing roller to crush the waste concrete, so as to make rational use of resources and save energy. A screw conveyor is set to filter out the materials that do not meet the size requirements from the first screen and transport them to the crushing device again, thus saving manpower and material resources and improving the crushing efficiency.

[0004] However, waste concrete contains metal materials such as steel bars and iron, and these metal materials have a certain hardness and are not easy to be crushed. When the materials that do not meet the requirements are repeatedly crushed in the above scheme, the steel bars, iron and other metal materials will be continuously crushed in a cycle, resulting in the gradual increase in the aggregation of metal materials such as steel bars and iron, affecting the subsequent crushing effect.

[0005] Therefore, a waste concrete crushing, screening and utilization device is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a device for crushing, screening and utilizing waste concrete in order to solve the above-mentioned problem, thereby improving the problem that waste concrete contains metal materials such as steel bars and iron, and metal materials such as steel bars and iron have a certain hardness and are not easy to be crushed. When the materials that do not meet the requirements are repeatedly crushed in the above-mentioned scheme, the metal materials such as steel bars and iron will be continuously crushed in a cycle, thereby causing the accumulation of metal materials such as steel bars and iron to gradually increase, affecting the later crushing effect.

[0007] The utility model achieves the above-mentioned purpose through the following technical scheme: a device for crushing, screening and utilizing waste concrete, comprising: a base, a screening box is fixedly connected to the top of the base, two crushing rollers are rotatably connected to the upper end of the inner wall of the screening box, a screening plate is fixedly connected to the lower end of the inner wall of the screening box, a recycling frame is fixedly connected to one side of the screening box, and a screw conveyor is arranged at the front end of the recycling frame; a separation mechanism, the separation mechanism for separating steel bars and ferrous metal materials in the waste concrete is arranged inside the screening box; wherein the separation mechanism comprises a guide plate hinged to one side of the inner wall of the screening box, a fixing plate is fixedly connected to the other side of the inner wall of the screening box, and a separation component is arranged inside the screening box.

[0008] Preferably, the separation component includes two rotating shafts rotatably connected to the inner wall of the screening box, the front end of the screening box is fixedly connected to the first motor, one end of one of the rotating shafts passes through the screening box and is fixedly connected to the output shaft of the first motor, a conveyor belt is transmission-connected between the two rotating shafts, and the inner wall of the conveyor belt is embedded with first magnets distributed in equal rows. The transmission direction of the conveyor belt is opposite to the direction of concrete flow, which is beneficial to increase the adsorption time of the first magnet on the flowing material on the fixed plate, thereby improving the separation effect of the first magnet on metal materials such as steel bars and iron from other materials. In the process of the crushed concrete flowing obliquely downward, under the mutual action of the conveyor belt and the first magnet, the metal materials such as steel bars and iron flowing on the fixed plate are adsorbed, which is beneficial to separate the metal materials such as steel bars and iron in the waste concrete from other materials, avoid re-crushing of metal materials such as steel bars and iron, thereby ensuring the later crushing effect of the waste concrete.

[0009] Preferably, the inner wall of the screening box is fixedly connected with a feeding frame, one side of the bottom end of the fixing plate is fixedly connected with the top end of the feeding frame, two connecting rods are fixedly connected with the inner wall of the feeding frame, the bottom end of the connecting rod is fixedly connected with a mounting plate, the bottom end of the mounting plate is fixedly connected with a connecting plate, and the inner wall of the connecting plate is embedded with a second magnet. Under the action of the connecting rod, it is helpful to separate the feeding frame into multiple feeding ports to avoid accumulation during feeding, and under the action of the connecting plate and the second magnet, it is helpful to separate the separated materials again, ensuring the separation effect of metal materials such as steel bars and iron from other materials after concrete crushing.

[0010] Preferably, a discharge trough is provided on the other side of the screening box, and a scraper is fixedly connected to the inner wall of the discharge trough, and one end of the scraper is in contact with the surface of the conveyor belt, which is beneficial for cleaning the steel bars, iron and other metal materials adsorbed on the surface of the conveyor belt, avoiding the accumulation of steel bars, iron and other metal materials on the conveyor belt, and ensuring the adsorption effect of the first magnet on steel bars, iron and other metal materials.

[0011] Preferably, a spring is fixedly connected to one side of the bottom end of the guide plate, and the other end of the spring is fixedly connected to the inner wall of the screening box. Under the action of the spring, the guide plate is driven to reciprocate when the crushed concrete is discharged, which helps to make the material on the guide plate fall more evenly on the fixed plate, avoiding accumulation of the material on the guide plate when it falls.

[0012] Preferably, a collecting frame is fixedly connected to the other side of the screening box, and the other end of the scraper extends to the inside of the collecting frame, which is conducive to collecting the separated steel bars, iron and other metal materials.

[0013] Preferably, the angle between the bottom end of the fixed plate and the horizontal plane is less than 45 degrees, and the inclination angle of the conveyor belt is the same as that of the fixed plate. This is conducive to the flow of crushed concrete under the action of the inclined surface of the fixed plate, and under the action of the same inclination angle of the conveyor belt and the fixed plate, it is conducive to the first magnet to better adsorb metal materials such as steel bars and iron on the fixed plate.

[0014] Preferably, the angle between the bottom end of the connecting plate and the horizontal plane is greater than 90 degrees, which is conducive to better contact between the material and the surface of the connecting plate when it falls.

[0015] The beneficial effects of the utility model are:

[0016] 1. After the waste concrete is crushed, the guide plate helps the crushed concrete fall to a higher place on the fixed plate, and the inclined surface of the fixed plate helps the crushed concrete to flow downward for discharge. The transmission direction of the conveyor belt is opposite to the flow direction of the concrete, which helps to increase the adsorption time of the first magnet on the flowing material on the fixed plate. In the process of the crushed concrete flowing downward, the conveyor belt and the first magnet adsorb the steel bars, iron and other metal materials flowing on the fixed plate, which is conducive to separating the steel bars, iron and other metal materials in the waste concrete from other materials, avoiding the re-crushing of the steel bars, iron and other metal materials, thereby ensuring the later crushing effect of the waste concrete;

[0017] 2. Under the action of the connecting rod, the material discharging frame is divided into multiple material discharging ports to avoid accumulation during material discharging. Under the action of the connecting plate and the second magnet, the separated materials can be separated again, ensuring the separation effect of metal materials such as steel bars and iron from other materials after concrete crushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2It is a cross-sectional view of the screening box of the utility model;

[0020] Figure 3 This is a schematic diagram of the separation mechanism structure of the utility model;

[0021] Figure 4 The schematic diagram of the conveyor belt structure of the utility model is as follows

[0022] Figure 5 It is a schematic diagram of the blanking frame structure of the utility model.

[0023] In the figure: 1. base; 2. screening box; 3. crushing roller; 4. screen plate; 5. recovery frame; 6. screw conveyor; 7. separation mechanism; 701. guide plate; 702. fixing plate; 703. separation assembly; 7031. rotating shaft; 7032. first motor; 7033. conveyor belt; 7034. first magnet; 7035. discharge chute; 7036. scraper; 7037. discharge frame; 7038. connecting rod; 7039. mounting plate; 70310. connecting plate; 70311. second magnet; 704. spring; 705. collection frame. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] When implementing: Figure 1-5 As shown, a waste concrete crushing, screening and utilization device comprises: a base 1, a screening box 2 is fixedly connected to the top of the base 1, two crushing rollers 3 are rotatably connected to the upper end of the inner wall of the screening box 2, a screen plate 4 is fixedly connected to the lower end of the inner wall of the screening box 2, a recycling frame 5 is fixedly connected to one side of the screening box 2, and a screw conveyor 6 is arranged at the front end of the recycling frame 5; a separation mechanism 7, the separation mechanism 7 for separating steel bars and ferrous metal materials in the waste concrete is arranged inside the screening box 2; wherein the separation mechanism 7 comprises a guide plate 701 hinged to one side of the inner wall of the screening box 2, a fixed plate 702 is fixedly connected to the other side of the inner wall of the screening box 2, and a separation assembly 703 is arranged inside the screening box 2.

[0026] One end of the two crushing rollers 3 passes through the screening box 2 and is fixedly connected to a gear. The two gears are meshed. A second motor is provided at the upper end of one side of the screening box 2. The other end of one of the gears is fixedly connected to the output shaft of the second motor. A feed port is provided at the top of the screening box 2. The waste concrete blocks are put into the feed port at the top of the screening box 2, and the second motor is started to drive the two crushing rollers 3 to rotate in opposite directions to crush the waste concrete blocks.

[0027] The guide plate 701 is arranged above the fixed plate 702. The crushed concrete will cause the guide plate 701 to tilt, and the concrete will be guided to the fixed plate 702 under the action of the inclined surface of the guide plate 701. At this time, the separation component 703 is driven to operate to separate the steel bars, iron and other metal materials in the crushed concrete.

[0028] like Figure 2 , Figure 3 and Figure 4 As shown, the separation assembly 703 includes two rotating shafts 7031 rotatably connected to the inner wall of the screening box 2, the front end of the screening box 2 is fixedly connected to the first motor 7032, one end of one of the rotating shafts 7031 passes through the screening box 2 and is fixedly connected to the output shaft of the first motor 7032, a conveyor belt 7033 is transmission-connected between the two rotating shafts 7031, and the inner wall of the conveyor belt 7033 is embedded with first magnets 7034 distributed in equal rows. A discharge trough 7035 is provided on the other side of the screening box 2, and a scraper 7036 is fixedly connected to the inner wall of the discharge trough 7035, and one end of the scraper 7036 is fitted with the surface of the conveyor belt 7033. The angle between the bottom end of the fixed plate 702 and the horizontal plane is less than forty-five degrees, and the inclination angle of the conveyor belt 7033 is the same as the inclination angle of the fixed plate 702.

[0029] When the crushed concrete falls on the fixed plate 702, under the action of the inclined surface of the fixed plate 702, the crushed concrete will flow downward along the inclined surface of the fixed plate 702. At this time, the first motor 7032 is driven to make the output shaft of the first motor 7032 drive one of the rotating shafts 7031 to rotate counterclockwise, thereby driving the conveyor belt 7033 to drive counterclockwise. At this time, the other rotating shaft 7031 will rotate synchronously. When the conveyor belt 7033 drives counterclockwise, it is opposite to the flow direction when the concrete falls. During the conveying process of the conveyor belt 7033, under the action of the first magnet 7034, the concrete on the fixed plate 702 will be crushed. The flowing steel bars, iron and other metal materials are adsorbed on the surface of the conveyor belt 7033. The principle of the magnet adsorbing the steel bars and iron metals is to utilize the interaction between the magnetism of the steel bars themselves and the magnetic field generated by the magnet, thereby generating a magnetic attraction force, so that the steel bars can be adsorbed by the magnet. When the steel bars, iron and other metal materials adsorbed on the surface of the conveyor belt 7033 pass through the scraper 7036 during the transmission process, the scraper 7036 will scrape off the steel bars, iron and other metal materials on the surface of the conveyor belt 7033. The scraper 7036 is arranged at an angle. Under the action of the inclined surface of the scraper 7036, the scraped steel bars, iron and other metal materials are guided out of the screening box 2.

[0030] like Figure 2 , Figure 3 and Figure 5 As shown, the inner wall of the screening box 2 is fixedly connected with a feeding frame 7037, one side of the bottom end of the fixed plate 702 is fixedly connected with the top of the feeding frame 7037, two connecting rods 7038 are fixedly connected to the inner wall of the feeding frame 7037, the bottom end of the connecting rod 7038 is fixedly connected with a mounting plate 7039, the bottom end of the mounting plate 7039 is fixedly connected with a connecting plate 70310, and the inner wall of the connecting plate 70310 is embedded with a second magnet 70311. The angle between the bottom end of the connecting plate 70310 and the horizontal plane is greater than ninety degrees.

[0031] The lower end of the fixed plate 702 is fixedly connected to the top of the feed frame 7037. Under the action of two connecting rods 7038, the feed frame 7037 is divided into three feed slots. After the first magnet 7034 separates the steel bars, iron and other metal materials in the crushed concrete, other materials will fall onto the feed frame 7037 under the action of the inclined surface of the fixed plate 702, and fall onto the screen plate 4 through multiple feed slots. During the falling process, the materials will contact the connecting plate 70310. At this time, the smaller remaining iron and other metal materials will be adsorbed under the action of the second magnet 70311.

[0032] A material receiving frame is provided at the bottom end of the screening box 2. When the material falls on the screen plate 4, the qualified material will fall to the bottom of the screen plate 4 and enter the material receiving frame. The unqualified material will remain on the screen plate 4 and enter the recovery frame 5 under the action of the inclined surface of the screen plate 4. The screw conveyor 6 is used to make the material enter the screening box 2 again from the feed port at the top of the screening box 2 for re-crushing. The screw conveyor 6 includes a cylinder, a third motor and an auger. When no qualified material enters the recovery frame 5, the third motor is started and the auger is operated to transport the material upward, and the material enters the screening box 2 through the discharge pipe at the upper end of the cylinder surface.

[0033] like Figure 3 As shown, a spring 704 is fixedly connected to one side of the bottom end of the guide plate 701 , and the other end of the spring 704 is fixedly connected to the inner wall of the screening box 2 .

[0034] When the waste concrete falls after being crushed, it will hit the guide plate 701 and squeeze the spring 704. Under the action of the spring 704, the guide plate 701 will swing in a small range during the process of guiding the material.

[0035] like Figure 2 As shown, a collecting frame 705 is fixedly connected to the other side of the screening box 2 , and the other end of the scraper 7036 extends to the inside of the collecting frame 705 .

[0036] When the scraper 7036 scrapes the steel bars, iron and other metal materials on the conveyor belt 7033, the steel bars, iron and other metal materials will enter the collection frame 705 under the action of the inclined surface of the scraper 7036, thereby completing the collection of the steel bars, iron and other metal materials.

[0037] When the utility model is in use, when it is necessary to crush and screen the waste concrete blocks, the waste concrete blocks are placed in the screening box 2, and the two crushing rollers 3 are driven to rotate to crush the waste concrete. The crushed concrete falls on the higher end of the fixed plate 702 under the action of the guide plate 701, and flows downward along the inclined surface of the fixed plate 702, driving the first motor 7032 to drive one of the rotating shafts 7031 to rotate counterclockwise, thereby driving the conveyor belt 7033 to drive counterclockwise, which is opposite to the flow direction when the concrete falls. During the conveying process of the conveyor belt 7033, under the action of the first magnet 7034, the steel bars and iron flowing on the fixed plate 702 are The steel bars, iron and other metal materials are adsorbed on the surface of the conveyor belt 7033, and during the transmission of the conveyor belt 7033, the scraper 7036 will scrape off the steel bars, iron and other metal materials on the surface of the conveyor belt 7033, and the scraped steel bars, iron and other metal materials will enter the collection frame 705. At the same time, other materials will fall onto the sieve plate 4 through the multiple feeding slots on the feeding frame 7037. The materials will contact the connecting plate 70310 during the falling process. At this time, the second magnet 70311 will adsorb the smaller remaining iron and other metal materials, thereby completing the complete separation of the steel bars, iron and other metal materials after the waste concrete is crushed.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A waste concrete crushing and screening utilization device, characterized in that: include: A base (1), the top of the base (1) is fixedly connected to a screening box (2), the upper end of the inner wall of the screening box (2) is rotatably connected to two crushing rollers (3), the lower end of the inner wall of the screening box (2) is fixedly connected to a screening plate (4), one side of the screening box (2) is fixedly connected to a recovery frame (5), and the front end of the recovery frame (5) is provided with a screw conveyor (6); A separation mechanism (7) for separating steel bars and iron metal materials from waste concrete, the separation mechanism (7) being arranged inside the screening box (2); The separation mechanism (7) comprises a guide plate (701) hinged to one side of the inner wall of the screening box (2), a fixing plate (702) is fixedly connected to the other side of the inner wall of the screening box (2), and a separation assembly (703) is arranged inside the screening box (2).

2. The device for crushing, screening and utilizing waste concrete according to claim 1, characterized in that: The separation assembly (703) comprises two rotating shafts (7031) rotatably connected to the inner wall of the screening box (2); a first motor (7032) is fixedly connected to the front end of the screening box (2); one end of one of the rotating shafts (7031) passes through the screening box (2) and is fixedly connected to the output shaft of the first motor (7032); a conveyor belt (7033) is transmission-connected between the two rotating shafts (7031); and first magnets (7034) distributed in equal rows are embedded and installed on the inner wall of the conveyor belt (7033).

3. The device for crushing, screening and utilizing waste concrete according to claim 1 is characterized in that: The inner wall of the screening box (2) is fixedly connected to a feeding frame (7037), one side of the bottom end of the fixed plate (702) is fixedly connected to the top of the feeding frame (7037), the inner wall of the feeding frame (7037) is fixedly connected to two connecting rods (7038), the bottom end of the connecting rods (7038) is fixedly connected to a mounting plate (7039), the bottom end of the mounting plate (7039) is fixedly connected to a connecting plate (70310), and the inner wall of the connecting plate (70310) is embedded with a second magnet (70311).

4. The device for crushing, screening and utilizing waste concrete according to claim 1, characterized in that: A discharge trough (7035) is provided on the other side of the screening box (2), and a scraper (7036) is fixedly connected to the inner wall of the discharge trough (7035), and one end of the scraper (7036) is in contact with the surface of the conveyor belt (7033).

5. The device for crushing, screening and utilizing waste concrete according to claim 1 is characterized in that: A spring (704) is fixedly connected to one side of the bottom end of the guide plate (701), and the other end of the spring (704) is fixedly connected to the inner wall of the screening box (2).

6. The device for crushing, screening and utilizing waste concrete according to claim 4 is characterized in that: A collecting frame (705) is fixedly connected to the other side of the screening box (2), and the other end of the scraper (7036) extends to the interior of the collecting frame (705).

7. The device for crushing, screening and utilizing waste concrete according to claim 2 is characterized in that: The angle between the bottom end of the fixed plate (702) and the horizontal plane is less than forty-five degrees, and the inclination angle of the conveyor belt (7033) is the same as the inclination angle of the fixed plate (702).

8. The device for crushing, screening and utilizing waste concrete according to claim 3 is characterized by: The angle between the bottom end of the connecting plate (70310) and the horizontal plane is greater than ninety degrees.

Images