Raw material preparation machine for recycled concrete production

Abstract

The utility model relates to the technical field of recycled concrete preparation, and disclose a raw material preparation machine for recycled concrete preparation, this raw material preparation machine for recycled concrete preparation, the small hole rapid screening is small sand particle, the big hole is used for the concrete particle of suitable size is screened down, then is carried away by the conveyer belt, and the concrete block that is too big is re -transported to the reverse crusher in the guide plate and vertical spiral elevator, guarantee product granularity even, the sieve plate carries out longitudinal shaking, help the slight bounce and slip of blocky material, increase the contact opportunity of particle and sieve hole, improve the pass rate, prevent sieve hole block, the steel wire of steel brush roller surface goes in the sieve hole inside and brushes the sediment in the hole, remove the stuck hole impurity, automatic cleaning sieve hole, prevent blockage.

Description

Technical Field

[0001] This utility model relates to the field of recycled concrete preparation technology, specifically to a raw material preparation machine for recycled concrete preparation. Background Technology

[0002] Waste concrete refers to discarded concrete blocks, such as those from buildings after dismantling. High-quality crushed and screened concrete blocks and fine sand can be used as recycled concrete. A complete concrete crushing and recycling production line mainly consists of equipment such as reciprocating feeders, concrete crushers, wheel bucket sand washers, and belt conveyors. Among them, concrete crushers are divided into many types according to the crushing method, and inverted crushers are one of the most common concrete crushers.

[0003] However, in actual use, when the material stays in the crushing chamber for too long, it will be repeatedly impacted, producing fine sand. The fine sand affects the bonding force and is prone to segregation, which in turn leads to unstable strength. Therefore, it is necessary to increase the cement water demand when preparing concrete. In view of this, we propose a raw material preparation machine for recycled concrete preparation. Utility Model Content

[0004] The purpose of this invention is to provide a raw material preparation machine for recycled concrete preparation, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a raw material preparation machine for recycled concrete, comprising a frame, a reverse crusher fixedly connected to the top end face of the frame, and a screening assembly provided on the inner wall of the frame, the screening assembly comprising:

[0006] A sieve plate, with a crossbar fixedly connected to the bottom end face of the sieve plate, a connecting plate sleeved on the side wall of the crossbar, a guide plate fixedly connected to the inner wall of the frame, and a vertical screw elevator fixedly connected to the side wall of the frame.

[0007] A drive motor, the output end of which is fixedly connected to a cam;

[0008] The mounting frame has a servo motor fixedly connected to its inner top surface. The output end of the servo motor is fixedly connected to a threaded rod. An internal threaded block is threadedly connected to the side wall of the threaded rod. A movable rod is rotatably connected to the side wall of the internal threaded block. A steel brush roller is fixedly connected to the side wall of the movable rod.

[0009] Preferably, the side wall of the frame is provided with a slot, the slot is movably connected to the crossbar, the guide plate is located below the screen plate, the guide plate is fixedly connected to the feed port of the vertical screw conveyor, and the discharge port of the vertical screw conveyor is fixedly connected to the feed port of the reverse crusher.

[0010] Preferably, a connecting frame is fixedly connected to the side wall of the frame, the drive motor is fixedly connected to the side wall of the connecting frame, and the cam is movably connected to the connecting plate.

[0011] Preferably, the mounting frame is fixedly connected to the bottom end face of the sieve plate, and a slider is sleeved on the end of the movable rod away from the internal thread block. The slider is sleeved with a limiting rod, and the limiting rod is fixedly connected to the bottom end face of the mounting frame.

[0012] Preferably, a mounting rod is fixedly connected to the bottom end face of the mounting frame, and a roller is fixedly connected to the side wall of the movable rod. The roller is movably connected to the top of the mounting rod, and the roller provides support for the steel brush roller.

[0013] Preferably, the side wall of the frame is provided with a through groove, which is movably connected to an external conveyor belt. A collection box is fixedly connected to the inner bottom surface of the frame. The collection box collects excessively small concrete particles and sand particles, and the external conveyor belt transports concrete blocks of appropriate size away.

[0014] Preferably, the top end face of the mounting rod is fixedly connected with teeth, and the end face of the movable rod is fixedly connected with gears, the gears meshing with the teeth.

[0015] Compared with the prior art, this utility model provides a raw material preparation machine for recycled concrete preparation, which has the following beneficial effects:

[0016] 1. This raw material preparation machine for recycled concrete uses a screening component. Small holes quickly screen out small sand particles, while large holes screen out concrete particles of suitable size, which are then conveyed away by a conveyor belt. Oversized concrete blocks are re-transported to the reverse crusher via guide plates and a vertical screw conveyor, ensuring uniform product particle size. The screen plate vibrates longitudinally to help the blocky material bounce and slide slightly, increasing the contact opportunity between particles and screen holes, improving the throughput, preventing screen blockage, and maintaining screening continuity and uniformity. The steel wires on the surface of the steel brush roller penetrate deep into the screen holes to brush away deposits and remove impurities that may be stuck, automatically cleaning the screen holes and preventing blockage.

[0017] 2. This raw material preparation machine for recycled concrete uses gears and teeth to drive the movable rod and steel brush roller to rotate, performing multi-angle brushing on each sieve hole for more thorough coverage. It removes wet materials, sticky materials, mortar lumps, etc. more effectively and cleanly. The rotation causes the direction of force on the brush bristles to change continuously, resulting in more uniform wear. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0019] Figure 2This is a schematic diagram of the screening component structure of this utility model;

[0020] Figure 3 This utility model Figure 2 Diagram of the structure of Zone A;

[0021] Figure 4 This is a schematic diagram of the sieve plate structure of this utility model;

[0022] Figure 5 This utility model Figure 4 Diagram of Section B and its structure;

[0023] Figure 6 This is a bottom view of the sieve plate structure of this utility model;

[0024] Figure 7 This utility model Figure 6 Diagram of the structure of the C-section.

[0025] In the diagram: 1. Frame; 2. Reverse crusher; 3. Screening assembly; 301. Screen plate; 302. Crossbar; 303. Connecting plate; 304. Drive motor; 305. Cam; 306. Guide plate; 307. Vertical screw conveyor; 308. Mounting frame; 309. Servo motor; 310. Threaded rod; 311. Internal threaded block; 312. Movable rod; 313. Steel brush roller; 4. Groove; 5. Through groove; 6. Collection box; 7. Roller; 8. Mounting rod; 9. Teeth; 10. Gear. Detailed Implementation

[0026] like Figures 1-7 As shown, this utility model provides a technical solution: a raw material preparation machine for recycled concrete preparation, including a frame 1, a reverse crusher 2 fixedly connected to the top end face of the frame 1, and a screening component 3 provided on the inner wall of the frame 1. The screening component 3 includes a screen plate 301, a crossbar 302, a connecting plate 303, a drive motor 304, a cam 305, a guide plate 306, a vertical screw elevator 307, a mounting frame 308, a servo motor 309, a threaded rod 310, an internal threaded block 311, a movable rod 312, and a steel brush roller 313.

[0027] In one embodiment of this utility model, the screen plate 301 is inclined, and the top of the screen plate 301 has two sizes of screen holes. The smaller screen hole is located directly below the discharge port of the reverse crusher 2 and is located on the upper side of the screen plate 301. The larger screen hole is located on the lower side of the screen plate 301. A crossbar 302 is fixedly connected to the bottom end face of the screen plate 301. A connecting plate 303 is sleeved on the side wall of the crossbar 302. A guide plate 306 is fixedly connected to the inner wall of the frame 1. A vertical screw conveyor 307 is fixedly connected to the side wall of the frame 1. A slot 4 is opened on the side wall of the frame 1. The slot 4 is movably connected to the crossbar 302. The guide plate 306 is located below the screen plate 301. The guide plate 306 is fixedly connected to the feed port of the vertical screw conveyor 307. The discharge port of the vertical screw conveyor 307 is fixedly connected to the feed port of the reverse crusher 2.

[0028] A connecting frame is fixedly connected to the side wall of the frame 1, and a drive motor 304 is fixedly connected to the side wall of the connecting frame. A cam 305 is fixedly connected to the output end of the drive motor 304, and the cam 305 is movably connected to the connecting plate 303.

[0029] Mounting bracket 308 is fixedly connected to the bottom end face of screen plate 301. Servo motor 309 is fixedly connected to the inner top surface of mounting bracket 308. Threaded rod 310 is fixedly connected to the output end of servo motor 309. Internal threaded block 311 is threadedly connected to the side wall of threaded rod 310. Movable rod 312 is rotatably connected to the side wall of internal threaded block 311. Steel brush roller 313 is fixedly connected to the side wall of movable rod 312. A slider is sleeved on the end of movable rod 312 away from internal threaded block 311. The slider is sleeved with a limiting rod. The limiting rod is fixedly connected to the bottom end face of mounting bracket 308. Mounting rod 8 is fixedly connected to the bottom end face of mounting bracket 308. Roller 7 is fixedly connected to the side wall of movable rod 312. Roller 7 is movably connected to the top of mounting rod 8. Roller 7 supports steel brush roller 313.

[0030] The side wall of the frame 1 is provided with a through groove 5, which is movably connected to the external conveyor belt. A collection box 6 is fixedly connected to the inner bottom surface of the frame 1. The collection box 6 collects excessively small concrete particles and sand particles, and the external conveyor belt transports concrete blocks of appropriate size away.

[0031] Smaller screen holes are located on the upper side of screen plate 301, while larger screen holes are located on the lower side of screen plate 301. This allows for the rapid screening of small sand particles. Larger holes are used to screen out concrete particles of suitable size. Excessively large concrete blocks are then conveyed back to the reverse crusher 2 via guide plate 306 and vertical screw conveyor 307, ensuring uniform product particle size. Drive motor 304 drives cam 305 to rotate, and cam 305 periodically lifts connecting plate 303, causing screen plate 301 to vibrate longitudinally. This helps the blocky material to bounce and slide slightly, increasing the contact opportunity between particles and screen holes, improving throughput, preventing screen blockage, and maintaining screening continuity and uniformity.

[0032] Servo motor 309 drives threaded rod 310 to rotate, which in turn drives internal threaded block 311 to reciprocate, which in turn drives steel brush roller 313 to reciprocate back and forth at the bottom of screen plate 301. During the screening process, concrete fragments, fine particles and mortar residues are prone to clogging the screen holes, especially wet materials or sticky substances. The steel wires on the surface of steel brush roller 313 penetrate deep into the screen holes to brush away the deposits inside the holes, remove the impurities stuck in the holes, automatically clean the screen holes, and prevent clogging. The steel wires are elastically inserted into the screen holes, which has sufficient brushing force and is not easy to damage the screen plate 301.

[0033] In addition, a tooth 9 is fixedly connected to the top end face of the mounting rod 8, and a gear 10 is fixedly connected to the end face of the movable rod 312. The gear 10 meshes with the tooth 9, so that while the movable rod 312 moves laterally, the gear 10 rotates under the guidance of the tooth 9, thereby driving the movable rod 312 and the steel brush roller 313 to rotate. The steel brush roller 313 does not simply slide left and right, but rotates while moving, which is equivalent to brushing at multiple angles on each screen hole, covering more thoroughly, and removing wet materials, sticky materials, mortar clumps, etc. more powerfully and cleanly. The rotation makes the direction of force on the brush bristles constantly change, the wear is more uniform, and the service life is greatly extended.

[0034] In this invention, during use, smaller screen holes are located on the upper side of the screen plate 301, and larger screen holes are located on the lower side of the screen plate 301. This allows for the rapid screening of small sand particles. The larger holes are used to screen out concrete particles of suitable size. Excessively large concrete blocks are then conveyed back to the reverse crusher 2 via the guide plate 306 and the vertical screw conveyor 307. The drive motor 304 drives the cam 305 to rotate, and the cam 305 periodically lifts the connecting plate 303, thereby causing the screen plate 301 to... Longitudinal shaking helps the lumpy material to bounce and slide slightly, increasing the contact opportunity between particles and screen holes and improving the throughput. The servo motor 309 drives the threaded rod 310 to rotate, which in turn drives the internal threaded block 311 to reciprocate, which in turn drives the steel brush roller 313 to reciprocate back and forth at the bottom of the screen plate 301. During the screening process, concrete fragments, fine particles and mortar residues are prone to clogging the screen holes, especially wet materials or sticky substances. The steel wires on the surface of the steel brush roller 313 penetrate deep into the screen holes to brush away the deposits inside the holes and remove the impurities stuck in the holes.

[0035] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A raw material preparation machine for recycled concrete preparation, comprising a frame (1), wherein a reverse crusher (2) is fixedly connected to the top end face of the frame (1), characterized in that: The inner wall of the frame (1) is provided with a screening assembly (3), the screening assembly (3) including: A sieve plate (301) is fixedly connected to a crossbar (302) at its bottom end face. A connecting plate (303) is sleeved on the side wall of the crossbar (302). A guide plate (306) is fixedly connected to the inner wall of the frame (1). A vertical screw elevator (307) is fixedly connected to the side wall of the frame (1). A drive motor (304) is provided, and a cam (305) is fixedly connected to the output end of the drive motor (304); Mounting bracket (308), the inner top surface of which is fixedly connected to a servo motor (309), the output end of which is fixedly connected to a threaded rod (310), the side wall of which is threadedly connected to an internal threaded block (311), the side wall of which is rotatably connected to a movable rod (312), and the side wall of which is fixedly connected to a steel brush roller (313).

2. The raw material preparation machine for recycled concrete preparation according to claim 1, characterized in that: The side wall of the frame (1) is provided with a slot (4), the slot (4) is movably connected to the crossbar (302), the guide plate (306) is located below the screen plate (301), the guide plate (306) is fixedly connected to the feed port of the vertical screw conveyor (307), and the discharge port of the vertical screw conveyor (307) is fixedly connected to the feed port of the reverse crusher (2).

3. The raw material preparation machine for recycled concrete preparation according to claim 1, characterized in that: A connecting frame is fixedly connected to the side wall of the frame (1), the drive motor (304) is fixedly connected to the side wall of the connecting frame, and the cam (305) is movably connected to the connecting plate (303).

4. The raw material preparation machine for recycled concrete preparation according to claim 1, characterized in that: The mounting bracket (308) is fixedly connected to the bottom end face of the sieve plate (301). The end of the movable rod (312) away from the internal thread block (311) is fitted with a slider. The slider is fitted with a limiting rod. The limiting rod is fixedly connected to the bottom end face of the mounting bracket (308).

5. The raw material preparation machine for recycled concrete preparation according to claim 1, characterized in that: The bottom end face of the mounting bracket (308) is fixedly connected to the mounting rod (8), and the side wall of the movable rod (312) is fixedly connected to the roller (7). The roller (7) is movably connected to the top of the mounting rod (8).

6. The raw material preparation machine for recycled concrete preparation according to claim 1, characterized in that: The side wall of the frame (1) is provided with a through groove (5), which is movably connected to the external conveyor belt. A collection box (6) is fixedly connected to the inner bottom surface of the frame (1).

7. The raw material preparation machine for recycled concrete preparation according to claim 5, characterized in that: The top end face of the mounting rod (8) is fixedly connected with teeth (9), and the end face of the movable rod (312) is fixedly connected with gears (10), which mesh with the teeth (9).

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