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CN-121972277-A - Construction waste crushing and screening and recycled aggregate grading device

CN121972277ACN 121972277 ACN121972277 ACN 121972277ACN-121972277-A

Abstract

The application relates to the field of construction waste recycling treatment equipment and discloses a construction waste crushing screening and recycled aggregate grading device which comprises a bracket, a discharging pipe arranged at the discharging hole of the bracket, a first-stage box body arranged at the bottom of the bracket, two second-stage box bodies arranged at two sides of the first-stage box body, screening frame bodies arranged at the bottom of the crusher, two screening cavities arranged in the screening frame bodies, and screening screens arranged in the screening cavities.

Inventors

  • WANG XIAOQIANG
  • JIANG LIHUA
  • ZHANG MEI
  • YIN XINBIN
  • LIU FEI

Assignees

  • 山东宣泰建设工程有限公司

Dates

Publication Date
20260505
Application Date
20260408

Claims (10)

  1. 1. The construction waste crushing and screening and recycled aggregate grading device is characterized by comprising a support (100), a crusher (101) arranged at the top of the support (100), a discharging pipe (102) arranged at a discharging hole of the crusher (101), primary boxes (103) arranged at the bottom of the support (100), two secondary boxes (104) arranged on two sides of each primary box (103), a screening frame (105) arranged at the bottom of the crusher (101), two screening cavities (106) arranged in the screening frame (105), screens (107) arranged in the screening cavities (106) and a switching part arranged between the support (100) and the screening frame (105) and used for driving the screening frame (105) to move alternately to a position corresponding to the discharging pipe (102) and alternately receiving aggregates discharged by the discharging pipe (102), and a part arranged on the screening frame (105) and used for applying vibration to the screening frame (105).
  2. 2. The construction waste crushing and screening and recycled aggregate classifying device according to claim 1, wherein the vibrating member comprises a vibration exciter (108) arranged at the bottom of the screening frame (105).
  3. 3. The device for classifying the construction waste crushing and the recycled aggregate according to claim 1, wherein the switching component comprises a screw rod (200) rotatably connected to the bracket (100), a sliding block (201) in threaded fit with the screw rod (200) is slidably connected to the bracket (100), and the screening frame body (105) is arranged on the sliding block (201).
  4. 4. A construction waste crushing and screening and recycled aggregate grading device according to claim 3, characterized in that the bracket (100) is provided with a motor (202), and an output shaft of the motor (202) is in transmission connection with the screw rod (200).
  5. 5. A construction waste crushing and screening and recycled aggregate grading device according to claim 3, characterized in that the screening frame (105) is connected with a connecting strip (203), the connecting strip (203) is slidingly connected to the sliding block (201), and a spring (204) is connected between the connecting strip and the sliding block (201).
  6. 6. The construction waste crushing and screening and recycled aggregate classifying device according to claim 1, wherein the two screening cavities (106) are alternately in a receiving and screening state and a stopping and screening state, the screening cavity (106) in the receiving and screening state is used for receiving and screening aggregate, the screening cavity (106) in the stopping and screening state is used for continuing screening for a preset time after stopping receiving aggregate, and is switched to a discharging and discharging state after the preset time, small-particle aggregate falls into the first-stage box (103), and large-particle aggregate is discharged into the second-stage box (104) on the corresponding side.
  7. 7. The construction waste crushing and screening and recycled aggregate grading device according to claim 6, wherein a first rotating shaft (300) is rotatably connected to the top of the screening frame (105), a baffle (301) is connected to the first rotating shaft (300), the baffle (301) extends into the screening cavity (106), a second rotating shaft (302) is rotatably connected to the end of the screening frame (105), and the screen (107) is fixed to the second rotating shaft (302).
  8. 8. The device for classifying the construction waste crushing and screening and the recycled aggregate according to claim 7, wherein a push rod (303) is arranged on the second rotating shaft (302), an oil cylinder (304) is rotatably connected to the screening frame (105), and a telescopic shaft of the oil cylinder (304) is rotatably connected with the push rod (303).
  9. 9. The device for classifying construction waste crushing and screening and recycled aggregate according to claim 8, wherein a gear (305) is connected to an end of the first rotating shaft (300), and a rack (306) meshed with the gear (305) is arranged on the top of the screening frame (105).
  10. 10. The construction waste crushing and screening and recycled aggregate grading device according to claim 9, wherein a connecting ring (400) is fixed on the outer wall of the second rotating shaft (302), a limit groove (401) is formed in the outer wall of the connecting ring (400), the push rod (303) is in running fit with the connecting ring (400), a limiting block (402) in sliding fit with the limit groove (401) is fixed on the inner wall of the push rod (303), a connecting rod (403) is connected to the push rod (303), and the other end of the connecting rod (403) is connected with the rack (306).

Description

Construction waste crushing and screening and recycled aggregate grading device Technical Field The invention relates to the technical field of construction waste recycling treatment equipment, in particular to a construction waste crushing screening and recycled aggregate grading device. Background In the recycling treatment process of construction waste, solid waste such as concrete blocks, bricks and the like is generally required to be crushed, and then materials are separated according to particle sizes through a screening mechanism, so that recycled aggregate with different specifications is obtained. In the existing construction waste treatment equipment, a common arrangement mode is that a screening mechanism is arranged below a discharge end of a crusher, so that crushed materials directly fall into the screening mechanism to be classified. Most of the existing screening modes are single-group screening mechanisms for continuously receiving materials discharged by the crusher and completing screening operation in a continuous feeding process. Because the crusher discharging has continuity, the screening mechanism is in a continuous receiving state, a thicker material layer is easy to form on the screen surface, large particles on the screen are not easy to discharge in time, and the material residence time of a part of the large particles close to the particle size of the screen holes is insufficient, so that the screening sufficiency and the grading effect of the recycled aggregate are influenced. Under the structure, if the screening mechanism is suspended for discharging large particles on the screen to receive materials or stop for cleaning, the continuous connection of crushing and screening operation can be affected, the treatment efficiency is reduced, and if the large particles on the screen are not cleaned in time, shielding and stacking interference can be caused for the screening of subsequent materials. Therefore, the existing construction waste crushing and screening device still has the problems that the screening is insufficient under the continuous feeding condition, and the discharge of large particles on the screen and the continuous operation are difficult to be compatible. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a construction waste crushing and screening and recycled aggregate grading device, which aims to at least alleviate the problems to a certain extent. The technical aim of the invention is realized by the following technical scheme: a construction waste crushing and screening and recycled aggregate grading device, comprising: The top of the bracket is provided with a crusher; the discharging pipe is arranged at the discharging hole of the crusher; The first-stage box body is arranged at the bottom of the bracket, and two sides of the first-stage box body are respectively provided with a second-stage box body; The screening frame body is arranged at the bottom of the crusher, two screening cavities are formed in the screening frame body, and a screen is arranged in each screening cavity; the switching component is arranged between the bracket and the screening frame body and is used for driving the screening frame body to displace so as to enable the two screening cavities to alternately move to the position corresponding to the discharging pipe and alternately receive aggregate discharged by the discharging pipe; and the vibration component is arranged on the screening frame body and is used for applying vibration to the screening frame body. Preferably, the vibration component comprises a vibration exciter arranged at the bottom of the screening frame body. Preferably, the switching component comprises a screw rod rotatably connected to the support, a sliding block in threaded fit with the screw rod is slidably connected to the support, and the screening frame body is arranged on the sliding block. Preferably, a motor is arranged on the bracket, and an output shaft of the motor is in transmission connection with the screw rod. Preferably, the screening frame body is connected with a connecting strip, the connecting strip is connected to the sliding block in a sliding manner, and a spring is connected between the connecting strip and the sliding block. Preferably, the two screening cavities are alternately in a receiving screening state and a stopping screening state, the screening cavity in the receiving screening state is used for receiving aggregate and screening, the screening cavity in the stopping screening state is used for continuing screening for a preset time after stopping receiving aggregate, the screening cavity is switched to a discharging and discharging state after the preset time, the small-particle aggregate falls into the first-stage box, and the large-particle aggregate is discharged to the second-stage box at the corresponding side. Preferably, the top of screening framework rotates and is connected with