A kind of civil engineering construction material recycling pretreatment device

Abstract

The invention discloses a pre-treatment device for recycling construction materials for civil engineering, which relates to the field of recycling construction material waste, and comprises a mounting frame and a mounting platform, wherein a second crushing box and a preliminary crushing mechanism are fixedly connected to the mounting platform, and the preliminary crushing mechanism is used for preliminary crushing of construction materials; the pre-treatment device for recycling construction materials for civil engineering, passes construction waste into the first crushing box, then crushes the construction waste into the second crushing box through the preliminary crushing mechanism, then the crushing and screening mechanism in the second crushing box performs collision-type crushing on the crushed material, so that iron mixed in the waste is knocked out of the waste, and the crushed iron material is adsorbed and screened out at the same time, the screened metal material is automatically discharged, and then the crushed waste is crushed, thereby achieving full crushing and screening of the construction waste, and facilitating the subsequent use of the treated construction materials.

Description

Technical Field

[0001] The invention relates to a construction material waste recycling technology, and in particular to a civil engineering construction material recycling pretreatment device. Background Art

[0002] Building materials, materials used in buildings are collectively referred to as building materials. In the process of construction projects, a certain amount of waste building materials are often generated. These waste building materials need to be recycled to reduce the cost of construction. However, when recycling waste building materials, they need to be crushed by corresponding recycling processing equipment to facilitate the secondary use of materials.

[0003] Existing construction material recycling pretreatment devices usually put some concrete waste mixed with steel bars into the crusher for crushing, which cannot fully crush the construction materials, resulting in poor crushing effect, affecting the subsequent use of construction waste. At the same time, the iron materials in the construction materials cannot be screened out during the crushing process, resulting in some iron materials mixed in the construction waste, affecting subsequent use. At the same time, the iron materials in the waste cannot be pre-processed in advance during the crushing process, resulting in serious wear of the crushing roller during the ultra-fine particle crushing process, affecting the service life of the processing device. Summary of the invention

[0004] The purpose of the present invention is to provide a civil engineering construction material recycling pretreatment device to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a civil engineering construction material recycling pretreatment device, comprising a mounting frame and a mounting platform, the mounting frame is fixedly connected to a first crushing box, and the mounting platform is fixedly connected to a second crushing box;

[0006] A preliminary crushing mechanism, which is arranged on the mounting frame and the first crushing box, and is used for preliminary crushing of the building materials;

[0007] The crushing and screening mechanism is arranged on the second crushing box, and is used for re-crushing and screening the building materials after preliminary crushing.

[0008] Further, the crushing and screening mechanism includes a crushing cover fixedly connected to the second crushing box, the bottom of the second crushing box is fixedly connected to the first motor, the output end of the first motor is fixedly connected to the first rotating shaft through a coupling, the outer surface of the first rotating shaft is connected to a transmission tube rotatably connected to the second crushing box through a transmission wheel and a transmission belt, a first electric telescopic rod is fixedly connected in the transmission tube, the top of the first electric telescopic rod is fixedly connected to a mounting column slidably connected to the transmission tube, the top of the mounting column is fixedly connected to a connecting plate, the top of the connecting plate is fixedly connected to a filter screen plate, the top of the mounting column is fixedly connected to a mounting shaft, the top of the mounting shaft is fixedly connected to a material receiving funnel, and the outer surface of the mounting shaft is fixedly connected to a material receiving tray;

[0009] The second crushing box is provided with a crushing mechanism connected to the transmission pipe, and the crushing mechanism is used to crush the incoming building materials. The outer surface of the transmission pipe is connected to a grinding mechanism connected to the second crushing box, and the grinding mechanism is used to fully crush the building materials.

[0010] Furthermore, the crushing mechanism includes a second electric telescopic rod fixedly connected to the second crushing box, the top of the second electric telescopic rod is fixedly connected to a mounting frame, the top and bottom of the mounting frame are rotatably connected to multiple first connecting shafts, a crushing shaft is fixedly connected between two of the first connecting shafts, a crushing shaft is fixedly connected to the outer surface of the crushing shaft with a crushing cone, a mounting cavity is provided on the crushing cone, an electromagnet block is fixedly connected in the mounting cavity, the outer surface of the first connecting shaft is connected to a transmission mechanism that is transmission-connected to a transmission pipe, and the transmission mechanism is used to drive the first connecting shaft to rotate.

[0011] Further, the transmission mechanism includes a first transmission shaft rotatably connected to the second crushing box, two first transmission gears are fixedly sleeved on the outer surface of the first transmission shaft, the outer surface of the first transmission gear is meshedly connected with a first transmission gear ring, the bottom of the first transmission gear ring is fixedly connected with a transmission ring rotatably connected to the second crushing box, a plurality of transmission columns are slidably connected to the transmission ring, the outer surface of the transmission column is fixedly sleeved with a spring fixedly connected to the transmission ring, the top and bottom of the mounting frame are rotatably connected with the second transmission gear ring, the inner surface of the second transmission gear ring is meshedly connected with the second transmission gear fixedly sleeved on the first connecting shaft, and a transmission groove slidably connected to the transmission column is provided on the side of the second transmission gear ring away from the first transmission gear ring.

[0012] Furthermore, a cleaning door is rotatably connected to the outer surface of the second crushing box.

[0013] Furthermore, the grinding mechanism includes a first grinding roller rotatably connected to the connecting plate, a first gear is fixedly sleeved on the outer surface of the transmission tube, a second gear is meshingly connected to the outer surface of the first gear, and a second grinding roller rotatably connected to the second crushing box is fixedly sleeved in the middle of the second gear.

[0014] Furthermore, a discharge pipe is fixedly connected to the bottom of the second crushing box, and an electromagnetic valve is provided on the discharge pipe.

[0015] Furthermore, the preliminary crushing mechanism includes a driving motor fixedly connected to the mounting frame, the output end of the driving motor is connected to the reducer fixedly connected to the mounting frame through a transmission wheel and a transmission belt, the output end of the reducer is fixedly connected to the first crushing roller rotatably connected to the first crushing box through a coupling, one end of the first crushing roller is fixedly sleeved with a third gear, the outer surface of the third gear is meshingly connected with a fourth gear, and the middle of the fourth gear is fixedly sleeved with a second crushing roller rotatably connected to the first crushing box.

[0016] Compared with the prior art, the civil engineering construction material recycling pretreatment device provided by the present invention has the following beneficial effects:

[0017] (1) The construction waste is introduced into a first crushing box, and then the construction waste is initially crushed by a preliminary crushing mechanism and introduced into a second crushing box. Then, the crushing and screening mechanism in the second crushing box performs collision crushing on the crushed material, so that the iron mixed in the waste is knocked out of the waste, and the crushed iron material is adsorbed and screened out at the same time. The screened metal material is automatically discharged, and then the crushed waste is crushed, thereby achieving sufficient crushing and screening of the construction waste, which is convenient for the subsequent use of the treated construction materials.

[0018] (2) The crushed materials entering the second crushing box are driven by the receiving funnel and the receiving plate on the mounting shaft to rotate, so that the waste entering the second crushing box hits the crushing cone on the crushing shaft under the action of centrifugal force to be crushed, and at the same time, the crushing cone is driven to rotate by the crushing shaft to crush the waste again. At the same time, the mounting shaft drives the receiving funnel and the receiving plate to rotate and move up and down, so that the crushed waste moves up and down to hit the crushing cone for crushing, thereby achieving full crushing of the construction waste, so that the iron materials in the construction waste are crushed and decomposed, and the crushing effect of the construction waste is greatly improved.

[0019] (3) During the impact crushing process, the electromagnet block inside the crushing shaft is energized, and the electromagnet block adsorbs the iron materials decomposed after crushing, and then automatically discharges the adsorbed iron materials, further improving the iron removal effect of construction waste, while avoiding the influence of iron materials on subsequent crushing.

[0020] (4) The construction materials filtered through the filter screen enter the first grinding roller and the second grinding roller. At this time, the transmission tube drives the second grinding roller to rotate through the first gear and the second gear. At the same time, the transmission tube drives the connecting plate to rotate through the mounting column. The connecting plate drives the first grinding roller to rotate. At the same time, the first electric telescopic rod drives the mounting column to move up and down reciprocatingly, so that the first grinding roller rotates and moves up and down reciprocatingly in the second crushing box, and cooperates with the rotation of the second grinding roller, so as to achieve full crushing of the crushed waste, which greatly improves the crushing effect of the construction waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 is an external first stereoscopic view of the present invention;

[0023] Figure 2 is an external second stereoscopic view of the present invention;

[0024] Figure 3 It is a first stereoscopic diagram of the internal structure of the present invention;

[0025] Figure 4 is a second stereoscopic diagram of the internal structure of the present invention;

[0026] Figure 5 This is a front view of the internal structure of the crushing shaft of the present invention;

[0027] Figure 6 For the present invention Figure 3 A magnified view of middle;

[0028] Figure 7 For the present invention Figure 4 Enlarged view of B.

[0029] Description of reference numerals:

[0030] 1. Mounting frame; 2. Mounting table; 3. First crushing box; 4. Second crushing box; 11. Crushing cover; 12. First motor; 13. First rotating shaft; 14. Transmission pipe; 15. First electric telescopic rod; 16. Mounting column; 17. Connecting plate; 18. Filter screen; 19. Mounting shaft; 190. Receiving funnel; 191. Receiving tray; 21. Second electric telescopic rod; 22. Mounting frame; 23. First connecting shaft; 24. Crushing shaft; 25. Crushing cone; 26. Mounting cavity; 27. Electromagnet block; 3 1. First transmission shaft; 32. First transmission gear; 33. First transmission gear ring; 34. Transmission ring; 35. Transmission column; 36. Spring; 37. Second transmission gear ring; 38. Second transmission gear; 39. Transmission slot; 390. Cleaning door; 41. First grinding roller; 42. First gear; 43. Second gear; 44. Second grinding roller; 45. Discharge pipe; 51. Drive motor; 52. Reducer; 53. First crushing roller; 54. Third gear; 55. Fourth gear; 56. Second crushing roller. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Embodiment 1

[0033] See also Figure 1-Figure 7 A device for recycling and preprocessing building materials for civil engineering, comprising a mounting frame 1 and a mounting platform 2, wherein a first crushing box 3 is fixedly connected to the mounting frame 1, a second crushing box 4 is fixedly connected to the mounting platform 2, a preliminary crushing mechanism, wherein the preliminary crushing mechanism is arranged on the mounting frame 1 and the first crushing box 3, and the preliminary crushing mechanism is used to perform preliminary crushing on the building materials, a crushing and screening mechanism, wherein the crushing and screening mechanism is arranged on the second crushing box 4, and the crushing and screening mechanism is used to crush and screen the preliminary crushed building materials again, and the preliminary crushing mechanism comprises a driving motor 51 fixedly connected to the mounting frame 1, and a driving motor 52 is provided on the second crushing box 4. The driving motor 51 is controlled by a PLC programming program, which can control the driving motor 51 to rotate forward and backward and the rotation angle. The output end of the driving motor 51 is connected to a reducer 52 fixedly connected to the mounting frame 1 through a transmission wheel and a transmission belt. The output end of the reducer 52 is fixedly connected to a first crushing roller 53 rotatably connected to the first crushing box 3 through a coupling. One end of the first crushing roller 53 is fixedly sleeved with a third gear 54, and the outer surface of the third gear 54 is meshed with a fourth gear 55. The middle of the fourth gear 55 is fixedly sleeved with a second crushing roller 56 rotatably connected to the first crushing box 3.

[0034] By putting the construction waste into the first crushing box 3, and then driving the motor 51 to rotate the first crushing roller 53 through the reducer 52, the first crushing roller 53 drives the second crushing roller 56 to rotate through the third gear 54 and the fourth gear 55, the first crushing roller 53 and the second crushing roller 56 fully crush the construction waste, and the crushed waste enters the second crushing box 4, the crushing and screening mechanism in the second crushing box 4 performs collision crushing on the crushed waste, so that the iron mixed in the waste is knocked out of the waste, and the crushed iron material is adsorbed and screened out at the same time, the screened metal material is automatically discharged, and then the crushed waste is crushed, thereby achieving sufficient crushing and screening of the construction waste, facilitating the subsequent use of the treated construction materials.

[0035] Embodiment 2

[0036] Based on Example 1, please refer to Figure 2-Figure 7 As shown, the crushing and screening mechanism includes a crushing cover 11 fixedly connected to the second crushing box 4, a first motor 12 is fixedly connected to the bottom of the second crushing box 4, the first motor 12 is controlled by a PLC programming program, and can control the first motor 12 to rotate forward and backward and rotate at an angle, the output end of the first motor 12 is fixedly connected to a first rotating shaft 13 through a coupling, the outer surface of the first rotating shaft 13 is connected to a transmission pipe 14 rotatably connected to the second crushing box 4 through a transmission wheel and a transmission belt, a first electric telescopic rod 15 is fixedly connected inside the transmission pipe 14, the top of the first electric telescopic rod 15 is fixedly connected to a mounting column 16 slidably connected to the transmission pipe 14, the top of the mounting column 16 is fixedly connected to a connecting plate 17, the top of the connecting plate 17 is fixedly connected to a filter screen plate 18, the top of the mounting column 16 is fixedly connected to a mounting shaft 19, the top of the mounting shaft 19 is fixedly connected to a material receiving funnel 190, and the outer surface of the mounting shaft 19 is fixedly connected to a material receiving tray 191;

[0037] The second crushing box 4 is provided with a crushing mechanism connected to the transmission pipe 14, and the crushing mechanism is used to crush the incoming building materials. The outer surface of the transmission pipe 14 is connected to a grinding mechanism connected to the second crushing box 4, and the grinding mechanism is used to fully crush the building materials.

[0038] The crushing mechanism includes a second electric telescopic rod 21 fixedly connected to the second crushing box 4, a mounting frame 22 is fixedly connected to the top of the second electric telescopic rod 21, a plurality of first connecting shafts 23 are rotatably connected to the top and bottom of the mounting frame 22, a crushing shaft 24 is fixedly connected between the two first connecting shafts 23, a crushing cone 25 is fixedly connected to the outer surface of the crushing shaft 24, a mounting cavity 26 is provided on the crushing cone 25, an electromagnet block 27 is fixedly connected in the mounting cavity 26, a transmission mechanism connected to the transmission tube 14 is connected to the outer surface of the first connecting shaft 23, the transmission mechanism is used to drive the first connecting shaft 23 to rotate, and the transmission mechanism includes a first transmission shaft 31 rotatably connected to the second crushing box 4, and two first transmission shafts 31 are fixedly sleeved on the outer surface A first transmission gear 32, the outer surface of the first transmission gear 32 is meshedly connected with a first transmission ring gear 33, the bottom of the first transmission ring gear 33 is fixedly connected with a transmission ring 34 rotatably connected to the second crushing box 4, a plurality of transmission columns 35 are slidably connected to the transmission ring 34, the outer surface of the transmission column 35 is fixedly sleeved with a spring 36 fixedly connected to the transmission ring 34, the top and bottom of the mounting frame 22 are both rotatably connected with a second transmission ring gear 37, the inner surface of the second transmission ring gear 37 is meshedly connected with a second transmission gear 38 fixedly sleeved with the first connecting shaft 23, a transmission groove 39 slidably connected to the transmission column 35 is provided on the side of the second transmission ring gear 37 away from the first transmission ring gear 33, and a cleaning door 390 is rotatably connected to the outer surface of the second crushing box 4.

[0039] The second electric telescopic rod 21 drives the installation frame 22 to move upward, so that the second transmission gear ring 37 at the top of the installation frame 22 abuts against the transmission column 35 at the bottom of the transmission ring 34. At this time, the first motor 12 drives the first rotating shaft 13 to rotate, and the first rotating shaft 13 drives the transmission tube 14 to rotate through the transmission wheel and the transmission belt. At the same time, the transmission tube 14 drives the first transmission shaft 31 to rotate through the transmission wheel and the transmission belt. The first transmission shaft 31 drives the first transmission gear ring 33 to rotate through the first transmission gear 32, and the first transmission gear ring 33 drives the transmission The ring 34 rotates, and the transmission column 35 enters the transmission groove 39 on the second transmission gear ring 37 under the elastic force of the spring 36, and then drives the second transmission gear ring 37 to rotate, and the second transmission gear ring 37 drives the second transmission gear 38 to rotate, and the second transmission gear 38 drives the first connecting shaft 23 to rotate, and the first connecting shaft 23 drives the crushing shaft 24 and the crushing cone 25 to rotate, and at the same time, the transmission pipe 14 drives the installation column 16 to rotate, the installation column 16 drives the connecting plate 17 to rotate, and the connecting plate 17 drives the filter screen The plate 18 rotates, and at the same time, the mounting column 16 drives the mounting shaft 19 to rotate, and the mounting shaft 19 drives the receiving funnel 190 and the receiving plate 191 to rotate. The waste that first enters the receiving funnel 190 is thrown out under the action of centrifugal force, so that it hits the crushing cone 25 on the crushing shaft 24 to be crushed. At the same time, the crushing shaft 24 drives the crushing cone 25 to rotate at a high speed, so that the waste is crushed again. At the same time, during the crushing process, the first electric telescopic rod 15 in the transmission tube 14 drives the mounting column 16 to move up and down, and the mounting column 16 carries The movable installation shaft 19 moves up and down, and the installation shaft 19 drives the receiving funnel 190 and the receiving tray 191 to move up and down, thereby driving the waste to move up and down. At the same time, some crushed materials enter the receiving funnel 190 and the receiving tray 191, and then are thrown to the crushing cone 25 under the action of centrifugal force to crush the waste again, and the process is repeated in sequence. At the same time, the qualified waste is screened out through the filter plate 18 on the top of the installation column 16, so as to achieve sufficient crushing of the construction waste and greatly improve the crushing effect of the construction waste.

[0040] Embodiment 3

[0041] Based on Example 2, please refer to Figure 4 , Figure 5 and Figure 7As shown, during the crushing process, the waste is crushed by the crushing cone 25, and the waste is crushed. At this time, the iron material wrapped in the waste is decomposed from the construction waste, and then thrown to the surface of the crushing shaft 24 under the action of centrifugal force. At this time, the electromagnet block 27 in the installation cavity 26 of the crushing shaft 24 is energized, and the electromagnet block 27 adsorbs the iron material so that it is adsorbed on the outer surface of the crushing shaft 24. After a period of crushing, when too much iron material is adsorbed on the crushing shaft 24, the first crushing box 3 stops feeding, and the second electric telescopic rod 21 drives the installation frame 22 to move downward, so that the installation frame 22 moves to between the second crushing box 4 and the crushing cover 11 position, and at the same time, the second transmission gear ring 37 at the bottom of the mounting frame 22 is fitted with the transmission column 35 on the transmission ring 34 under the second crushing box 4, thereby driving the first connecting shaft 23 and the crushing shaft 24 to rotate. At this time, the electromagnet block 27 is powered off. At this time, the iron material adsorbed on the surface of the crushing shaft 24 is thrown between the second crushing box 4 and the crushing cover 11 under the action of centrifugal force, and then cleaned out through the cleaning door 390, thereby realizing automatic adsorption and screening of the iron material in the building material, and automatically discharging the adsorbed iron material, further improving the iron removal effect on the construction waste, and avoiding the influence of the iron material on the subsequent crushing.

[0042] The grinding mechanism includes a first grinding roller 41 rotatably connected to the connecting plate 17, a first gear 42 is fixedly sleeved on the outer surface of the transmission tube 14, a second gear 43 is meshingly connected on the outer surface of the first gear 42, a second grinding roller 44 rotatably connected to the second crushing box 4 is fixedly sleeved in the middle of the second gear 43, a discharge pipe 45 is fixedly connected to the bottom of the second crushing box 4, and an electromagnetic valve is provided on the discharge pipe 45.

[0043] The building materials filtered by the filter screen 18 enter the first grinding roller 41 and the second grinding roller 44. At this time, the transmission tube 14 drives the second grinding roller 44 to rotate through the first gear 42 and the second gear 43. At the same time, the transmission tube 14 drives the connecting plate 17 to rotate through the mounting column 16, and the connecting plate 17 drives the first grinding roller 41 to rotate. At the same time, the first electric telescopic rod 15 drives the mounting column 16 to move up and down reciprocatingly, so that the first grinding roller 41 rotates and moves up and down reciprocatingly in the second crushing box 4, and cooperates with the rotation of the second grinding roller 44, so as to achieve full crushing of the crushed waste, which greatly improves the crushing effect of the construction waste.

[0044] Working principle: The second electric telescopic rod 21 drives the installation frame 22 to move upward, so that the second transmission gear ring 37 at the top of the installation frame 22 abuts against the transmission column 35 at the bottom of the transmission ring 34. At this time, the first motor 12 drives the first rotating shaft 13 to rotate, and the first rotating shaft 13 drives the transmission tube 14 to rotate through the transmission wheel and the transmission belt. At the same time, the transmission tube 14 drives the first transmission shaft 31 to rotate through the transmission wheel and the transmission belt. The first transmission shaft 31 drives the first transmission gear ring 33 to rotate through the first transmission gear 32. The first transmission gear ring 33 The transmission ring 34 is driven to rotate. At this time, the transmission column 35 enters the transmission groove 39 on the second transmission gear ring 37 under the elastic force of the spring 36, and then drives the second transmission gear ring 37 to rotate. The second transmission gear ring 37 drives the second transmission gear 38 to rotate. The second transmission gear 38 drives the first connecting shaft 23 to rotate. The first connecting shaft 23 drives the crushing shaft 24 and the crushing cone 25 to rotate. At the same time, the transmission tube 14 drives the mounting column 16 to rotate, the mounting column 16 drives the connecting plate 17 to rotate, and the connecting plate 17 drives the The filter plate 18 rotates, and at the same time, the mounting column 16 drives the mounting shaft 19 to rotate, and the mounting shaft 19 drives the receiving funnel 190 and the receiving plate 191 to rotate. The waste that first enters the receiving funnel 190 is thrown out under the action of centrifugal force, so that it hits the crushing cone 25 on the crushing shaft 24 to be crushed. At the same time, the crushing shaft 24 drives the crushing cone 25 to rotate at a high speed, so that the waste is crushed again. At the same time, during the crushing process, the first electric telescopic rod 15 in the transmission tube 14 drives the mounting column 16 to move up and down, and the mounting column 16 The installation shaft 19 is driven to move up and down, and the installation shaft 19 drives the receiving funnel 190 and the receiving tray 191 to move up and down, thereby driving the waste to move up and down. At the same time, some crushed materials enter the receiving funnel 190 and the receiving tray 191, and then are thrown to the crushing cone 25 under the action of centrifugal force to crush the waste again, and the process is repeated in sequence. At the same time, the qualified waste is screened out through the filter plate 18 on the top of the installation column 16, so as to achieve sufficient crushing of the construction waste and greatly improve the crushing effect of the construction waste.

[0045] During the crushing process, the waste is crushed by the crushing cone 25, and the waste is crushed. At this time, the iron material wrapped in the waste is decomposed from the construction waste, and then thrown to the surface of the crushing shaft 24 under the action of centrifugal force. At this time, the electromagnet block 27 in the installation cavity 26 of the crushing shaft 24 is energized, and the electromagnet block 27 adsorbs the iron material so that it is adsorbed on the outer surface of the crushing shaft 24. After a period of crushing, when too much iron material is adsorbed on the crushing shaft 24, the first crushing box 3 stops feeding, and the second electric telescopic rod 21 drives the installation frame 22 to move downward, so that the installation frame 22 moves to the position between the second crushing box 4 and the crushing cover 11. position, and at the same time, the second transmission gear ring 37 at the bottom of the mounting frame 22 is fitted with the transmission column 35 on the transmission ring 34 under the second crushing box 4, thereby driving the first connecting shaft 23 and the crushing shaft 24 to rotate. At this time, the electromagnet block 27 is powered off, and the iron material adsorbed on the surface of the crushing shaft 24 is thrown between the second crushing box 4 and the crushing cover 11 under the action of centrifugal force, and then cleaned out through the cleaning door 390, thereby realizing automatic adsorption and screening of the iron material in the building material, and automatically discharging the adsorbed iron material, which greatly improves the iron removal effect on the construction waste and avoids the influence of the iron material on the subsequent crushing.

[0046] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A civil engineering construction material recycling pretreatment device, comprising a mounting frame (1) and a mounting platform (2), characterized in that: The mounting frame (1) is fixedly connected to a first crushing box (3), and the mounting platform (2) is fixedly connected to a second crushing box (4); A preliminary crushing mechanism, the preliminary crushing mechanism being arranged on the mounting frame (1) and the first crushing box (3), and being used for preliminary crushing of building materials; A crushing and screening mechanism is provided on the second crushing box (4), and is used for re-crushing and screening the building materials after preliminary crushing.

2. A civil engineering construction material recycling pretreatment device according to claim 1, characterized in that: The crushing and screening mechanism comprises a crushing cover (11) fixedly connected to a second crushing box (4); a first motor (12) is fixedly connected to the bottom of the second crushing box (4); an output end of the first motor (12) is fixedly connected to a first rotating shaft (13) via a coupling; an outer surface of the first rotating shaft (13) is connected to a transmission pipe (14) rotatably connected to the second crushing box (4) via a transmission wheel and a transmission belt; a first electric telescopic rod (15) is fixedly connected inside the transmission pipe (14); The top end of the first electric telescopic rod (15) is fixedly connected to a mounting column (16) slidably connected to the transmission tube (14); the top end of the mounting column (16) is fixedly connected to a connecting plate (17); the top of the connecting plate (17) is fixedly connected to a filter screen plate (18); the top end of the mounting column (16) is fixedly connected to a mounting shaft (19); the top end of the mounting shaft (19) is fixedly connected to a material receiving funnel (190); and the outer surface of the mounting shaft (19) is fixedly connected to a material receiving tray (191); A crushing mechanism connected to the transmission pipe (14) is arranged in the second crushing box (4), and the crushing mechanism is used to crush the incoming building materials. The outer surface of the transmission pipe (14) is connected to a grinding mechanism connected to the second crushing box (4), and the grinding mechanism is used to fully grind the building materials.

3. A civil engineering construction material recycling pretreatment device according to claim 2, characterized in that: The crushing mechanism comprises a second electric telescopic rod (21) fixedly connected to the second crushing box (4); the top end of the second electric telescopic rod (21) is fixedly connected to a mounting frame (22); the top and bottom of the mounting frame (22) are both rotatably connected to a plurality of first connecting shafts (23); a crushing shaft (24) is fixedly connected between two of the first connecting shafts (23); a crushing cone (25) is fixedly connected to the outer surface of the crushing shaft (24); a mounting cavity (26) is provided on the crushing cone (25); an electromagnet block (27) is fixedly connected in the mounting cavity (26); the outer surface of the first connecting shaft (23) is connected to a transmission mechanism that is transmission-connected to a transmission pipe (14); the transmission mechanism is used to drive the first connecting shaft (23) to rotate.

4. A civil engineering construction material recycling pretreatment device according to claim 3, characterized in that: The transmission mechanism comprises a first transmission shaft (31) rotatably connected to the second crushing box (4); two first transmission gears (32) are fixedly sleeved on the outer surface of the first transmission shaft (31); the outer surface of the first transmission gear (32) is meshedly connected to a first transmission gear ring (33); the bottom of the first transmission gear ring (33) is fixedly connected to a transmission ring (34) rotatably connected to the second crushing box (4); a plurality of transmission columns (35) are slidably connected to the transmission ring (34); the outer surface of the transmission column (35) is fixedly sleeved with a spring (36) fixedly connected to the transmission ring (34); the top and bottom of the installation frame (22) are both rotatably connected to a second transmission gear ring (37); the inner surface of the second transmission gear ring (37) is meshedly connected to a second transmission gear (38) fixedly sleeved to the first connecting shaft (23); and a transmission groove (39) slidably connected to the transmission column (35) is provided on a side of the second transmission gear ring (37) away from the first transmission gear ring (33) 5. A civil engineering construction material recycling pretreatment device according to claim 4, characterized in that: The outer surface of the second crushing box (4) is rotatably connected to a cleaning door (390).

6. The civil engineering construction material recycling pretreatment device according to claim 2, characterized in that: The grinding mechanism comprises a first grinding roller (41) rotatably connected to a connecting plate (17); a first gear (42) is fixedly sleeved on the outer surface of the transmission tube (14); a second gear (43) is meshingly connected to the outer surface of the first gear (42); and a second grinding roller (44) rotatably connected to a second crushing box (4) is fixedly sleeved in the middle of the second gear (43).

7. A civil engineering construction material recycling pretreatment device according to claim 6, characterized in that: A discharge pipe (45) is fixedly connected to the bottom of the second crushing box (4), and an electromagnetic valve is provided on the discharge pipe (45).

8. The civil engineering construction material recycling pretreatment device according to claim 1, characterized in that: The preliminary crushing mechanism comprises a driving motor (51) fixedly connected to the mounting frame (1); the output end of the driving motor (51) is connected to a reducer (52) fixedly connected to the mounting frame (1) through a driving wheel and a driving belt; the output end of the reducer (52) is connected to a first crushing roller (53) rotatably connected to a first crushing box (3) through a coupling; one end of the first crushing roller (53) is fixedly sleeved with a third gear (54); the outer surface of the third gear (54) is meshingly connected with a fourth gear (55); the middle of the fourth gear (55) is fixedly sleeved with a second crushing roller (56) rotatably connected to the first crushing box (3).

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