Shaping machine for construction waste recycled aggregate

Abstract

The invention relates to a shaping machine for construction waste recycled aggregate, which comprises a machine shell, the machine shell comprises a first roller, a second roller and a third roller, and flow deflectors spirally extending along the axial directions of the first roller, the second roller and the third roller are respectively arranged in the first roller, the second roller and the third roller; a transmission assembly is further included and comprises a rotating shaft, a first gear set and a second gear set, the first gear set and the second gear set are in transmission connection with the rotating shaft, the first gear set is in tooth transmission connection with the first roller and the third roller, and the second gear set is in tooth transmission connection with the second roller. The rotating directions of the second roller, the first roller and the third roller are opposite; the rotating shaft is connected with a driving mechanism for driving the rotating shaft to rotate. And the air flow channel is automatically opened through thrust generated by rotation among the first roller, the second roller and the third roller, so that air in the connecting pipe is conveyed to the dust collecting box, pollution to air around the equipment is reduced, the process can be achieved without other power sources, and the energy-saving performance is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of aggregate crushing, in particular to a shaping machine for recycled aggregate from construction waste. Background Art

[0002] In the field of building material production, aggregate shaping is an important pretreatment process for improving concrete performance. Traditional drum-type shaping equipment mostly uses a long cylindrical structure with a single rotation direction. Aggregates are pushed in a single direction by spiral guide vanes. This shaping equipment has the following technical defects:

[0003] The aggregates entering the shaping equipment are propelled by the guide vanes, but due to the single motion trajectory of the guide vanes, the aggregates can only achieve one-way collision shaping, and it is difficult to form multi-dimensional collision. This method is relatively simple, and the shaping efficiency is low. It is also easy for the aggregates to be discharged directly without collision shaping. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a shaping machine for recycled aggregates from construction waste, so as to solve the problem that when the existing shaping equipment shapes the aggregates, the single movement trajectory of the aggregates pushed by the guide vanes results in the aggregates only being able to achieve one-way collision shaping, and it is difficult to form multi-dimensional collisions. This method is relatively simple, and the shaping efficiency is low. It is also easy for the aggregates to be directly discharged without collision shaping.

[0005] The present invention is achieved through the following technical solutions:

[0006] A shaping machine for recycled aggregates from construction waste, comprising a cylindrical housing, the housing comprising a first roller, a second roller, and a third roller arranged coaxially, the second roller being rotatably engaged with the first roller and the third roller at both ends, the first roller, the second roller, and the third roller being provided with guide vanes extending spirally along their axial directions.

[0007] It also includes a transmission assembly for driving the first roller, the second roller and the third roller to rotate synchronously, the transmission assembly includes a rotating shaft, a first gear group and a second gear group, the first gear group and the second gear group are respectively connected to the rotating shaft for transmission, the first gear group is respectively connected to the first roller and the third roller for transmission, the second gear group is connected to the second roller for transmission, the second roller rotates in the opposite direction to the first roller and the third roller, and the rotating shaft is connected to a driving mechanism for driving the rotating shaft to rotate.

[0008] It is further defined that the first gear set includes two first gears and two first outer gear rings, the two first gears are respectively meshed with the two first outer gear rings, the two first outer gear rings are respectively sleeved outside the first roller and the third roller, and the two first outer gear rings are respectively coaxially connected to the first roller and the third roller;

[0009] The two first gears are both coaxially connected to the rotating shaft.

[0010] It is further defined that the second gear set includes a second gear, a third gear and a second outer ring gear, the third gear is located between the second gear and the second outer ring gear, two sides of the third gear are respectively meshed with the second gear and the second outer ring gear, the second outer ring gear is sleeved outside the second roller, and the second outer ring gear is coaxially connected to the second roller;

[0011] The second gear is coaxially connected to the rotating shaft.

[0012] It is further defined that the outer walls of the first roller and the third roller are coaxially provided with a mounting shell, and the mounting shell is provided with a dust collection box;

[0013] A suction component is arranged in the installation shell, and the suction component is provided with an input end communicated with the shell and an output end communicated with the dust collecting box.

[0014] It is further defined that the suction assembly includes a connecting pipe, one end of which is fixedly connected to the mounting shell and is provided with a first one-way valve communicating with the inside of the shell and a second one-way valve communicating with the dust box.

[0015] It is further defined that the connecting pipe is an elastic structure in the shape of a bellows;

[0016] The suction assembly also includes an extrusion block and a pushing block, both of which are connected to the mounting shell. The extrusion block is connected to one end of the connecting pipe away from the first one-way valve and the second one-way valve. The pushing block is abutted against a side of the extrusion block away from the connecting pipe, and the pushing block is connected to the second roller.

[0017] It is further defined that the opposite sides of the pushing block and the extrusion block are both inclined surfaces, the pushing block and the extrusion block are in contact through the inclined surfaces, and the second roller is also provided with an elastic support member connected to the pushing block, and the pushing block can slide along the axial direction of the second roller through the elastic support member.

[0018] It is further defined that the inclination angle of the guide vanes in the first and third rollers is 15°-25°, the inclination angle of the guide vanes in the second roller is 5°-15°, and the inclination direction of the guide vanes in the second roller is opposite to that of the guide vanes in the first roller.

[0019] It is further defined that the inner walls of the first roller and the third roller are provided with a plurality of output ports penetrating the outer walls, and the plurality of output ports are distributed along the axial direction of the first roller.

[0020] It is further defined that the diameters of the plurality of output ports gradually decrease along the length direction from the first roller to the third roller.

[0021] The beneficial effects of the present invention are:

[0022] Aggregate is conveyed through the first, second, and third rollers and the output port in sequence via guide vanes. During this process, because the second roller rotates in the opposite direction to the first and third rollers, aggregate tends to accumulate at the intersection of the first, second, and third rollers. Subsequent aggregate pushes this portion of aggregate to continue conveying, thereby slowing down the aggregate conveying speed and reducing the direct discharge of unshaped aggregate. At the same time, the accumulated aggregate forms a rock-on-rock area, resulting in more regular aggregate particle shapes after crushing. This method also reduces wear on the inner wall of the casing, thereby improving the overall durability of the device.

[0023] At the same time, the second roller rotates in the opposite direction, forming a two-way motion trajectory with the first roller and the third roller, which increases the collision frequency of aggregates at the intersection and significantly improves the shaping efficiency and uniformity.

[0024] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 Schematic diagram of the connection between the transmission assembly and the housing of the present invention;

[0027] Figure 3 is a cross-sectional view of the housing of the present invention;

[0028] Figure 4 Schematic diagram of the internal structure of the housing of the present invention;

[0029] Figure 5 This is a schematic diagram of the connection between the second roller and the second gear set of the present invention;

[0030] Figure 6 It is a schematic structural diagram of the pushing block and the squeezing block (the connecting pipe is in an un-squeezed state) of the present invention;

[0031] Figure 7 It is a schematic structural diagram of the suction component of the present invention.

[0032] In the picture:

[0033] 1. Casing; 101. First roller; 102. Second roller; 103. Third roller; 2. Guide vane; 3. Rotating shaft; 4. First gear set; 401. First gear; 402. First outer gear ring; 5. Second gear set; 501. Second gear; 502. Third gear; 503. Second outer gear ring; 6. Driving mechanism; 7. Mounting shell; 701. Dust box; 8. Suction assembly; 801. Connecting pipe; 8011. First one-way valve; 8012. Second one-way valve; 802. Extrusion block; 803. Pushing block; 9. Elastic support member; 10. Output port. DETAILED DESCRIPTION

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0037] In the above description of the present invention, it should be noted that the terms "one side," "the other side," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0038] Furthermore, the term "identical" and similar terms do not necessarily require that the components be absolutely identical; slight variations are permitted. The term "perpendicular" simply refers to the positional relationship between components being more perpendicular than "parallel," not that the structure must be perfectly vertical; rather, it can be slightly tilted.

[0039] See also Figure 1-7The present invention provides a technical solution: a shaping machine for recycled aggregates from construction waste, comprising a cylindrical housing 1, wherein the housing 1 comprises a coaxial first roller 101, a second roller 102, and a third roller 103, wherein both ends of the second roller 102 are respectively rotatably engaged with the first roller 101 and the third roller 103, and wherein the first roller 101, the second roller 102, and the third roller 103 are respectively provided with guide vanes 2 extending spirally along their axial directions;

[0040] It also includes a transmission assembly for driving the first roller 101, the second roller 102 and the third roller 103 to rotate synchronously, and the transmission assembly includes a rotating shaft 3, a first gear group 4 and a second gear group 5. The first gear group 4 and the second gear group 5 are respectively connected to the rotating shaft 3 through tooth transmission. The first gear group 4 is respectively connected to the first roller 101 and the third roller 103 through tooth transmission. The second gear group 5 is connected to the second roller 102 through tooth transmission. The second roller 102 rotates in the opposite direction to the first roller 101 and the third roller 103. The rotating shaft 3 is connected to a driving mechanism 6 for driving the rotating shaft 3 to rotate.

[0041] In this embodiment, the first roller 101 and the third roller 103 are respectively provided with an input port and an output port connected to themselves at opposite ends, and the aggregate can be transported into or out of the casing 1 through the input port and the output port;

[0042] The first roller 101, the second roller 102 and the third roller 103 are coaxially connected and cooperate with the transmission assembly and the drive mechanism 6 to promote the synchronous rotation of the first roller 101, the second roller 102 and the third roller 103. The spiral guide plates 2 inside the three rollers form a conveying channel for conveying aggregates.

[0043] During the rotation of the first roller 101 , the second roller 102 and the third roller 103 , the second roller 102 rotates in the opposite direction to the first roller 101 and the third roller 103 located at both ends thereof by cooperating with the second gear set 5 .

[0044] The specific usage is as follows:

[0045] Step 1: Start the driving mechanism 6 to drive the connecting shaft to rotate, thereby driving the first gear set 4 and the second gear set 5 on the connecting shaft to rotate synchronously, and then drive the first roller 101, the third roller 103 and the second roller 102 through the first gear set 4 and the second gear set 5 respectively;

[0046] Step 2: Aggregate is input through the input port of the first roller 101. After the aggregate is input into the first roller 101, the first roller 101 rotates and cooperates with the guide plate 2 inside it to transport the aggregate, pushing the aggregate toward the direction of the second roller 102. Similarly, the aggregate passes through the second roller 102 and the third roller 103 in sequence, and finally the aggregate is output through the output port after being crushed and shaped (see the output direction of the aggregate). Figure 3 shown);

[0047] During the conveying process, the aggregate will rotate along with the spiral guide plate 2. When the aggregate rotates to the top of the casing 1, it will fall naturally under the influence of gravity and collide with the inner wall of the casing 1, thus breaking the aggregate in the way of stone hitting iron and achieving the effect of shaping.

[0048] Step 3: When the aggregate is conveyed from the first roller 101 to the second roller 102 and then from the second roller 102 to the third roller 103, since the first roller 101 and the third roller 103 rotate in opposite directions to the second roller 102, part of the aggregate contacts the first roller 101 and the second roller 102, and the second roller 102 and the third roller 103 at the same time. The shear force generated by the opposite rotations of the two rollers causes the part of the aggregate to stay at the intersection of the first roller 101 and the second roller 102, and the second roller 102 and the third roller 103;

[0049] Step 4: As subsequent aggregate is conveyed, some aggregate accumulates at the intersections of the first and second rollers 101, 102, and the second and third rollers 102, 103. Subsequent aggregate pushes this aggregate to continue conveying, slowing down the aggregate conveying speed. At the same time, aggregate at the intersections of the first and second rollers 101, 102, and the second and third rollers 102, 103, forms a rock-on-rock area for a certain period of time.

[0050] That is, compared with the prior art, when the shaping machine for recycled aggregates from construction waste of the present application is used to crush and shape aggregates, the aggregates are transported by the guide plate 2 to pass through the first roller 101, the second roller 102, the third roller 103 and the output port in sequence. During this process, since the second roller 102 rotates in the opposite direction to the first roller 101 and the third roller 103, the aggregates are easily accumulated at the intersection of the second roller 102, the first roller 101 and the third roller 103, and the accumulation state is dynamic, as follows:

[0051] If the first roller 101 and the third roller 103 rotate clockwise, the second roller 102 rotates counterclockwise, and the aggregate transported therein is turned in the direction of rotation of the roller and transported along the axial direction of the roller under the guidance of the guide plate 2. A stone-on-stone area is formed at the intersection of the second roller 102, the first roller 101 and the third roller 103, thereby improving the mutual friction effect during the aggregate transportation process;

[0052] At the same time, the second roller 102 rotates in the opposite direction, forming a bidirectional motion trajectory with the first roller 101 and the third roller 103, which increases the collision frequency of the aggregates at the intersection and significantly improves the shaping efficiency and uniformity.

[0053] In this embodiment, the first gear set 4 includes two first gears 401 and two first outer gear rings 402. The two first gears 401 are respectively meshed with the two first outer gear rings 402. The two first outer gear rings 402 are respectively sleeved outside the first roller 101 and the third roller 103. The two first outer gear rings 402 are respectively coaxially connected to the first roller 101 and the third roller 103.

[0054] The two first gears 401 are both coaxially connected to the rotating shaft 3 .

[0055] In this solution, two first gears 401 and two first outer gear rings 402 are respectively engaged to form two tooth transmission structures, and the parameters of the two tooth transmission structures are consistent. The rotating shaft 3 is connected to the first roller 101 and the third roller 103 through the two tooth transmission structures, so that the first roller 101 and the third roller 103 can rotate synchronously with the rotating shaft 3 through the two tooth transmission structures, ensuring that the first roller 101 and the third roller 103 rotate synchronously in the same direction, avoiding aggregate blockage or collision efficiency reduction due to asynchronous rotation of the rollers.

[0056] In this embodiment, the second gear set 5 includes a second gear 501, a third gear 502, and a second outer gear ring 503. The third gear 502 is located between the second gear 501 and the second outer gear ring 503. Both sides of the third gear 502 are respectively engaged with the second gear 501 and the second outer gear ring 503. The second outer gear ring 503 is sleeved outside the second roller 102 and is coaxially connected to the second roller 102.

[0057] The second gear 501 is coaxially connected to the rotating shaft 3 .

[0058] The second gear 501, the third gear 502 and the second outer gear ring 503 also mesh with each other to form a gear transmission structure, and the rotating shaft 3 and the second roller 102 are connected by the gear transmission structure, so that the second roller 102 can rotate synchronously with the rotating shaft 3 through the gear transmission structure.

[0059] In this scheme, the transmission connection between the second roller 102 and the rotating shaft 3 is realized through three-stage gear transmission (rotating shaft 3-second gear 501-third gear 502-second outer gear ring 503-second roller 102), and the second gear set 5 has one more gear structure on the basis of the first gear set 4, so as to realize the reverse driving of the second roller 102.

[0060] Among them, the second gear set can also realize the following functions and effects according to specific use requirements and factory production:

[0061] When the second roller needs to rotate faster than the first roller and the third roller: the number of teeth of the second gear is less than that of the third gear, and the number of teeth of the third gear is less than that of the second outer gear ring. For example, the ratio of the number of teeth of the second gear to the third gear is 1:2, and the ratio of the number of teeth of the third gear to the second outer gear ring is 1:3. At this time, the total transmission ratio is (1 / 2) x (1 / 3) = 1 / 6, and the second roller speed is 6 times the rotating shaft speed.

[0062] When the second roller needs to rotate slower than the first roller and the third roller: the number of teeth of the second gear is greater than that of the third gear, and the number of teeth of the third gear is greater than that of the second outer gear ring. For example, the ratio of the number of teeth of the second gear to the third gear is 2:1, and the ratio of the number of teeth of the third gear to the second outer gear ring is 3:1. At this time, the total transmission ratio is (2 / 1) x (3 / 1) = 6, and the second roller speed is 1 / 6 times the rotating shaft speed.

[0063] When the second roller 102 rotates faster or slower, the intersection of the first roller 101 and the second roller 102 and the intersection of the second roller 102 and the third roller 103 form differential areas, respectively. When the aggregate is located in the differential area and simultaneously contacts the first roller 101 and the second roller 102 or the second roller 102 and the third roller 103, the following effects can be produced:

[0064] Taking the case that the second roller 102 rotates faster as an example:

[0065] Firstly, since the second roller 102 rotates faster than the first roller 101, when the aggregate is transported by the first roller 101 to the second roller 102, the aggregate simultaneously contacts the first roller 101 and the second roller 102, which produces an acceleration effect on the aggregate. The flow guide piece 2 in the second roller 102 produces a momentary thrust force enhancement on the aggregate, which promotes the aggregate at the junction to be "quickly pulled into" the second roller 102. Since the directions of rotation of the two rollers are opposite, the aggregate experiences a momentary change in direction at this point, resulting in an increase in shear force, which forms greater collision and friction on the aggregate; high-speed rotation shortens the residence time of the aggregate, but the number of collisions per unit time increases;

[0066] Secondly, since the rotation speed of the second roller 102 is greater than that of the third roller 103, when the aggregate is transported to the third roller 103 through the second roller 102, the aggregate contacts the second roller 102 and the third roller 103 at the same time, which will have a deceleration effect on the aggregate, prolonging the residence time of the aggregate at the junction of the second roller 102 and the third roller 103 to form a stone-on-stone area. At the same time, it is easy to roll under the guidance of the guide plate 2 in the third roller 103, so that the edges and corners of the aggregate surface are gradually smoothed.

[0067] That is, when the second roller 102 rotates at a faster speed, when the aggregate is located at the intersection of the first roller 101 and the second roller 102, the differential speed between the two is used to facilitate the coarse crushing of the hard aggregate; when the aggregate is located at the intersection of the second roller 102 and the third roller 103, the differential speed between the two is used to facilitate the surface refinement treatment suitable for the recycled aggregate.

[0068] On the contrary, when the second roller 102 rotates at a slower speed, the difference between the second roller 102 and the first roller 101 is that the intersection of the first roller 101 and the second roller 102, the second roller 102 and the third roller 103 have opposite effects on the aggregate. When used specifically, the speed of the second roller 102 can be selected according to the material of the aggregate to be faster or slower than that of the first roller 101 and the third roller 103.

[0069] For example, when the second roller 102 rotates at a faster speed, the first roller 102 and the second roller 103 generate a greater shear force, which can preferentially separate soft impurities (such as wood chips) from hard aggregates, thereby improving the sorting efficiency.

[0070] When the second roller 102 rotates at a slower speed, the low speed difference between the first roller 102 and the second roller 103 prolongs the extrusion time of the aggregate between the first roller 102 and the second roller 103, and gradually crushes the high-hardness material through continuous pressure to facilitate subsequent continuous shaping, thereby reducing the poor crushing effect caused by insufficient instantaneous impact force.

[0071] In this embodiment, the outer walls of the first roller 101 and the third roller 103 are coaxially provided with a mounting shell 7, and the mounting shell 7 is provided with a dust collection box 701;

[0072] A suction assembly 8 is provided in the mounting shell 7 , and the suction assembly 8 is provided with an input end communicating with the housing 1 and an output end communicating with the dust collecting box 701 .

[0073] In this solution, the mounting shell 7 cooperates with the suction component 8 and the dust collecting box 701 to form a mechanism for extracting the dust inside the casing 1. The dust generated during the aggregate shaping process can be absorbed in real time by the suction component 8, thereby reducing the dust pollution inside the casing 1, improving the working environment, and reducing the impact of dust adhesion on the aggregate collision effect.

[0074] In order to achieve better usage effect, a filter element structure can be set in the dust box 701, and a baffle that can open the inner cavity of the dust box 701 is set on the dust box 701. After the dust is transported to the dust box 701 through the suction component 8, it can adhere to the filter element structure, and the filter element can be replaced or cleaned regularly through the baffle.

[0075] In this embodiment, the suction assembly 8 includes a connecting pipe 801, one end of which is fixedly connected to the mounting shell 7, and is provided with a first one-way valve 8011 communicating with the inside of the housing 1 and a second one-way valve 8012 communicating with the dust box 701.

[0076] In this solution, the first one-way valve 8011 is a one-way valve for the housing 1 to output toward the connecting pipe 801; the second one-way valve 8012 is a one-way valve for the connecting pipe 801 to output toward the dust collecting box 701. The provision of the first one-way valve 8011 and the second one-way valve 8012 can reduce the occurrence of dust backflow.

[0077] In this embodiment, the connecting pipe 801 is an elastic structure in the shape of a bellows;

[0078] The suction assembly 8 also includes an extrusion block 802 and a push block 803, both of which are connected to the mounting shell 7. The extrusion block 802 is connected to one end of the connecting pipe 801 away from the first one-way valve 8011 and the second one-way valve 8012, and the push block 803 is abutted against a side of the extrusion block 802 away from the connecting pipe 801. The push block 803 is connected to the second roller 102.

[0079] In this embodiment, the connecting tube 801 is in the shape of a bellows, which makes it retractable and foldable while also being flexible. One end of the connecting tube is fixedly connected to the mounting shell 7, and the other end is connected to the extrusion block 802. Therefore, the extrusion block 802 serves as the movable end of the connecting tube 801 and is located inside the mounting shell 7.

[0080] In specific use, the squeezing block 802 is installed on the first roller 101 and the third roller 103, and the pushing block 803 is installed on the second roller 102. Since the second roller 102 rotates in the opposite direction, the squeezing block 802 and the pushing block 803 are located on the same rotation track, so the two can contact each other through rotation.

[0081] Since the extrusion block 802 is connected to the movable end of the connecting tube 801, the extrusion block 802 can be folded and moved in the mounting shell 7 through the contraction of the connecting tube 801. Therefore, as the second roller 102 rotates, since the pushing block 803 is connected to the second roller 102, the pushing block 803 will push the extrusion block 802 toward the fixed end of the connecting tube 801 after contact with the extrusion block 802. During this process, the distance between the movable end and the fixed end of the connecting tube 801 is reduced, and its internal space is contracted, causing its internal pressure to increase, so that the internal air pressure pushes the second one-way valve 8012 to open, and as the extrusion block 802 squeezes the connecting tube 801, the gas in the connecting tube 801 is transported to the dust collecting box 701 through the second one-way valve 8012, thereby completing the collection and processing of the dust.

[0082] That is, by using the corrugated elastic connecting tube 801 in conjunction with the second one-way valve 8012, the thrust generated by the rotation of the drum is used to automatically open the air flow channel to transport the air in the connecting tube 801 to the dust box 701. This process can be achieved without the need for other power sources, thereby effectively improving energy saving.

[0083] In this embodiment, the opposing surfaces of the pushing block 803 and the extruding block 802 are both inclined surfaces, and the pushing block 803 and the extruding block 802 are in contact with each other through the inclined surfaces. An elastic support member 9 connected to the pushing block 803 is also provided on the second roller 102, and the pushing block 803 can slide along the axial direction of the second roller 102 through the elastic support member 9.

[0084] In this embodiment, when the elastic support member 9 is naturally extended, it pushes the pushing block 803 toward the direction of the squeezing block 802. In this state, the rotational trajectories of the pushing block 803 and the squeezing block 802 intersect. Therefore, the pushing block 803 and the backlog block can be brought into contact through the first roller 101, the second roller 102 and the third roller 103.

[0085] During specific use, as the first roller 101, the second roller 102 and the third roller 103 rotate, the pushing block 803 pushes the squeezing block 802 toward the fixed end of the connecting tube 801, causing the connecting tube 801 to shrink and fold. In this state, the elastic force of the elastic support member 9 is greater than the reaction force exerted by the squeezing block 802 on the pushing block 803, so the pushing block 803 can maintain its push on the squeezing block 802.

[0086] As the connecting tube 801 shrinks and folds to a certain extent, the connecting tube 801 becomes rigid. At this time, the pushing block 803 can no longer push the squeezing block 802 to move, but the first roller 101, the second roller 102 and the third roller 103 still keep rotating. At this time, the pushing block 803 cooperates with the two inclined surfaces on the opposite sides of the squeezing block 802 and the pushing block 803 to briefly apply a force along the axial direction of the first roller 101 to the pushing block 803, so that the pushing block 803 overcomes the elastic force of the elastic support member 9, causing the pushing block 803 to 03 moves toward the direction of the elastic support member 9, and the elastic support member 9 contracts to store elastic energy. In this state, the pushing block 803 and the squeezing block 802 are out of the state of intersecting the rotation trajectories. At this time, the pushing block 803 rotates with the second roller 102, and the squeezing block 802 rotates with the first roller 101 and the third roller 103. The two continue to rotate after being dislocated. When the first roller 101, the second roller 102 and the third roller 103 rotate to a certain extent, the squeezing block 802 and the pushing block 803 intersect again to repeat the above process.

[0087] When the extrusion block 802 is separated from the extrusion of the pushing block 803, the connecting pipe 801 gradually recovers due to its own elasticity. During the recovery process, the space inside the connecting pipe 801 increases, and the first one-way valve 8011 is opened by increasing the negative pressure, thereby sucking the air in the casing 1 into the connecting pipe 801 through the first one-way valve 8011, thereby sucking some of the dust mixed in the air into the connecting pipe 801 as well.

[0088] That is, the first roller 101, the second roller 102 and the third roller 103 rotate to cause the squeezing block 802 and the pushing block 803 to contact periodically, and as they contact, the pushing block 803 squeezes the bellows periodically, forming pulsed negative pressure suction.

[0089] In this embodiment, the guide vanes 2 in the first roller 101 and the third roller 103 are inclined at an angle of 15°-25°, and the guide vanes 2 in the second roller 102 are inclined at an angle of 5°-15°. The guide vanes 2 in the second roller 102 are inclined in opposite directions to those in the first roller 101.

[0090] In this solution, the inclination angles of the guide vanes 2 of different rollers vary gradually (15°-25° and 5°-15°) and in opposite directions, which not only accelerates the axial advancement of the aggregate, but also prolongs the residence time in the second roller 102 and enhances the frequency of collision between aggregates.

[0091] In this embodiment, the inner walls of the first roller 101 and the third roller 103 are provided with a plurality of output ports 10 penetrating the outer walls, and the plurality of output ports 10 are distributed along the axial direction of the first roller 101 .

[0092] In this solution, multiple output ports 10 are provided on the side walls of the first drum 101 and the third drum 103 . The diameter of the output ports 10 can be adaptively designed according to the size of the required aggregate, so that only aggregates of appropriate sizes can pass through the output ports 10 and are considered qualified aggregates.

[0093] In this embodiment, the diameters of the plurality of output ports 10 gradually decrease along the length direction from the first roller 101 to the third roller 103 .

[0094] In this solution, since the axial propulsion direction of the aggregate is the first roller 101-the second roller 102-the third roller 103, the volume of the aggregate is the largest when it first enters the first roller 101. As it is crushed and shaped, the volume becomes smaller and smaller, and the diameters of the multiple output ports 10 are also the same, so that aggregates of different sizes can be discharged and collected.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A shaping machine for recycled aggregates from construction waste, comprising a cylindrical housing (1), characterized in that: The housing (1) comprises a coaxial first roller (101), a second roller (102) and a third roller (103); two ends of the second roller (102) are respectively rotatably engaged with the first roller (101) and the third roller (103); and the first roller (101), the second roller (102) and the third roller (103) are respectively provided with guide vanes (2) extending in a spiral along their axial directions; The invention also includes a transmission assembly for driving the first roller (101), the second roller (102) and the third roller (103) to rotate synchronously, wherein the transmission assembly includes a rotating shaft (3), a first gear group (4) and a second gear group (5), wherein the first gear group (4) and the second gear group (5) are respectively connected to the rotating shaft (3) by transmission, the first gear group (4) is respectively connected to the first roller (101) and the third roller (103) by gear transmission, the second gear group (5) is connected to the second roller (102) by gear transmission, the second roller (102) rotates in the opposite direction to the first roller (101) and the third roller (103), and the rotating shaft (3) is connected to a driving mechanism (6) for driving the rotating shaft (3) to rotate.

2. The shaping machine for construction waste recycled aggregate according to claim 1, characterized in that: The first gear set (4) comprises two first gears (401) and two first outer gear rings (402), the two first gears (401) are respectively meshed with the two first outer gear rings (402), the two first outer gear rings (402) are respectively sleeved outside the first roller (101) and the third roller (103), and the two first outer gear rings (402) are respectively coaxially connected to the first roller (101) and the third roller (103); The two first gears (401) are both coaxially connected to the rotating shaft (3).

3. The shaping machine for construction waste recycled aggregate according to claim 1, characterized in that: The second gear set (5) comprises a second gear (501), a third gear (502) and a second outer gear ring (503); the third gear (502) is located between the second gear (501) and the second outer gear ring (503); both sides of the third gear (502) are respectively meshed with the second gear (501) and the second outer gear ring (503); the second outer gear ring (503) is sleeved outside the second roller (102); and the second outer gear ring (503) is coaxially connected to the second roller (102); The second gear (501) is coaxially connected to the rotating shaft (3).

4. The shaping machine for construction waste recycled aggregate according to any one of claims 1 to 3, characterized in that: The outer walls of the first roller (101) and the third roller (103) are coaxially provided with a mounting shell (7), and a dust collection box (701) is provided on the mounting shell (7); A suction assembly (8) is provided in the mounting shell (7), and the suction assembly (8) is provided with an input end communicating with the inside of the housing (1) and an output end communicating with the dust collecting box (701).

5. The shaping machine for construction waste recycled aggregate according to claim 4, characterized in that: The suction assembly (8) comprises a connecting pipe (801), one end of which is fixedly connected to the mounting shell (7), and is provided with a first one-way valve (8011) communicating with the inside of the housing (1) and a second one-way valve (8012) communicating with the dust box (701).

6. The shaping machine for recycled aggregate from construction waste according to claim 5, characterized in that: The connecting pipe (801) is an elastic structure in the shape of a bellows; The suction assembly (8) further comprises an extrusion block (802) and a push block (803), both of which are in communication with the mounting shell (7), the extrusion block (802) being connected to one end of the connecting pipe (801) away from the first one-way valve (8011) and the second one-way valve (8012), the push block (803) being in contact with a side of the extrusion block (802) away from the connecting pipe (801), and the push block (803) being connected to the second roller (102).

7. The shaping machine for recycled aggregate from construction waste according to claim 6, characterized in that: The opposing sides of the pushing block (803) and the squeezing block (802) are both inclined surfaces, and the pushing block (803) and the squeezing block (802) are in contact with each other through the inclined surfaces. An elastic support member (9) connected to the pushing block (803) is also provided on the second roller (102), and the pushing block (803) can slide along the axial direction of the second roller (102) through the elastic support member (9).

8. The shaping machine for recycled aggregate from construction waste according to claim 1, characterized in that: The guide vanes (2) in the first roller (101) and the third roller (103) have an inclination angle of 15°-25° and the same spiral direction, while the guide vanes (2) in the second roller (102) have an inclination angle of 5°-15° and the opposite spiral direction to the first roller and the third roller.

9. The shaping machine for construction waste recycled aggregate according to claim 1, characterized in that: The inner walls of the first roller (101) and the third roller (103) are provided with a plurality of output ports (10) penetrating the outer walls, and the plurality of output ports (10) are distributed along the axial direction of the first roller (101).

10. The shaping machine for recycled aggregates from construction waste according to claim 9, characterized in that: The diameters of the plurality of output ports (10) gradually decrease along the length direction from the first roller (101) to the third roller (103).

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