Equipment for preparing sand from pollution-free construction waste

Abstract

The invention discloses equipment for preparing sand grains from pollution-free construction waste, and relates to the technical field of construction waste recycling. The equipment for preparing the sand grains from the pollution-free construction waste comprises a crusher, a sand making machine is fixedly connected to the bottom of the crusher, a driving structure is arranged on the outer wall of the crusher, a driving structure is arranged on the outer wall of the sand making machine, and a screening mechanism is fixedly connected to the bottom of the sand making machine. According to the equipment for preparing the sand grains from the pollution-free construction waste, after sand making is conducted on concrete fragments through a sand making machine, the sand grains fall into the top of a sand screening plate to be screened, the sand screening plate is pushed towards the left side, and the sand grains blocked in filter holes of the sand screening plate can be pushed out of the holes due to water resistance, so that the filter holes in the sand screening plate are prevented from being blocked by the sand grains; and the amount of qualified sand grains mixed in the unqualified sand grains can be reduced, so that the sand making efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building waste recycling, in particular to a pollution-free building waste sand preparation equipment. BACKGROUND

[0002] The building wall recycling sand preparation can effectively reduce the accumulation of construction waste and the exploitation of natural sandstone, and significantly reduce the impact on the natural environment. Secondly, the waste wall is broken and processed into recycled sand material by professional equipment, which not only realizes the recycling of resources, but also can be used for preparing concrete or roadbed material, thereby saving the construction cost.

[0003] The patent with Chinese application number 201510215487.X discloses a pollution-free building waste sand preparation equipment. The feeding hopper is arranged at the bottom end of the conveying belt, the top end of the conveying belt is connected with the crusher, the sand preparation machine is arranged at the bottom of the crusher, the sand preparation machine is connected with the separation device through the pipeline, the left part of the separation device is provided with a fan, the top of the sand washing chamber is connected with the separation device through the pipeline, the bottom of the sand washing chamber is connected with the sand collecting box through the pipeline, the sand washing chamber is connected with the filtering device through the pipeline, the filtering device is connected with the water tank through the pipeline, the circulating water pump is arranged at the top right side of the water tank, the circulating water pump is connected with the bottom of the sand washing chamber through the pipeline, the separation device is connected with the sedimentation chamber through the pipeline, and the sedimentation chamber is connected with the ash collecting box through the pipeline.

[0004] The sand preparation equipment can screen the prepared sand particles after sand preparation. The unqualified sand particles will be reprocessed and re-input into the sand preparation equipment. The unqualified sand particles will cover some filtered holes, so that the qualified sand particles cannot be efficiently separated, and the qualified sand particles will be re-input into the processing together with the unqualified sand particles, so that part of the sand particles are repeatedly processed, which greatly affects the output efficiency of the sand particles. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a pollution-free building waste sand preparation equipment to solve the problems in the background art.

[0006] To achieve the above purpose, the present application realizes the following technical scheme: a pollution-free building waste sand preparation equipment, comprising a crusher, the bottom of the crusher is fixedly connected with a sand preparation machine, the outer wall of the crusher is provided with a driving structure, the outer wall of the sand preparation machine is provided with a driving structure, the bottom of the sand preparation machine is fixedly connected with a screening mechanism, and the bottom of the screening mechanism is fixedly connected with a flushing mechanism.

[0007] The screening mechanism comprises:

[0008] A screening container is arranged at the bottom of the crusher.

[0009] A sand screening plate, wherein the sand screening plate is disposed inside a screening container;

[0010] A water sieve plate is disposed inside the screening container at the bottom of the sand sieve plate.

[0011] Preferably, a pusher plate is fixedly connected to the right side of the sand screening plate inside the screening container, and the right side of the water screening plate is fixedly connected to the pusher plate. A guide column is fixedly connected to the bottom of the water screening plate inside the screening container, and the pusher plate is movably connected to the outer wall of the guide column. An electric telescopic rod is fixedly connected to the left side of the screening container, and the left telescopic end of the electric telescopic rod is fixedly connected to the pusher plate.

[0012] Preferably, the top of the sand screening plate is fixedly connected with several inclined protrusions, and the top of the water screening plate is also fixedly connected with several inclined protrusions. The left side of the screening container is provided with discharge outlets corresponding to the sand screening plate and the water screening plate, respectively.

[0013] Preferably, a connecting pipe is fixedly connected to the top of the screening container, and the top of the connecting pipe is fixedly connected to the bottom of the sand making machine. A drive motor is fixedly connected inside the connecting pipe, and a screening screen is fixedly connected to the top output shaft of the drive motor.

[0014] Preferably, a spiral plate is fixedly connected to the bottom of the screening mesh, and a pusher plate is fixedly connected to the top of the screening mesh.

[0015] Preferably, the rinsing mechanism includes a connecting box, which is fixedly connected to the bottom of the screening container, a drive pump is fixedly connected to the front of the screening container, and a drain plate is fixedly connected to the top of the screening container, which is located on top of the sand screening plate.

[0016] Preferably, the connecting box is connected to the drive pump via a pipe, and the drive pump is connected to the drainage board via a pipe.

[0017] Preferably, a filter screen is fixedly connected to the top of the connecting box at the connection between the screening container and the connecting box.

[0018] Preferably, several push plates are movably connected to the bottom of the water sieving plate, and limiting plates are fixedly connected to both the left and right sides of the push plates at the bottom of the water sieving plate.

[0019] Preferably, a mounting frame is fixedly connected to the left side of the push plate, several sludge-pushing plates are provided at the bottom of the sieve plate, and the front and back of the sludge-pushing plates are rotatably connected to the mounting frame. A blocking plate is fixedly connected to the bottom of the mounting frame on the right side of the sludge-pushing plates, and an openable door is provided on the left side of the screening container.

[0020] This invention provides a pollution-free equipment for preparing sand from construction waste. It has the following beneficial effects:

[0021] 1. This pollution-free construction waste sand production equipment uses a sand making machine to make sand from concrete fragments. The sand particles fall onto the top of a sand screening plate for screening. The sand screening plate is pushed to the left, and the sand particles blocked in the filter holes of the sand screening plate are pushed out of the holes due to water resistance. This prevents the filter holes on the sand screening plate from being blocked by sand particles, which would lead to a decrease in subsequent screening efficiency. It can reduce the amount of qualified sand particles mixed with unqualified sand particles, thereby improving the sand production efficiency.

[0022] 2. This pollution-free construction waste sand production equipment discharges water downwards through a drainage plate, washing the sand particles on the top of the screen plate. The water pushes the sand particles downwards, causing them to move rapidly down the inclined surface of the screen plate between the two sloping protrusions. This promotes the separation of adhering sand particles and allows them to quickly pass through the filter holes on the screen plate and fall to the bottom. The downward force of the water flow also helps the sand particles pass through the screen plate more quickly, improving screening efficiency and thus increasing sand production efficiency.

[0023] 3. This pollution-free construction waste sand production equipment uses water discharged from the drainage plate to flush the sand particles on the top of the screen plate. The water pushes the sand particles that are higher than the inclined surface on the top of the screen plate to the left, which can prevent unscreened sand particles from accumulating on the top layer and being discharged directly through the screen plate. This avoids the qualified sand particles being processed again along with the unqualified sand particles, thus improving the screening efficiency and the sand production efficiency. Attached Figure Description

[0024] Figure 1 This is a front-view stereoscopic structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of the back side of the present invention;

[0026] Figure 3 This is a top-view three-dimensional structural diagram of the present invention;

[0027] Figure 4 This is a schematic cross-sectional view of the screening container of the present invention;

[0028] Figure 5 This is a schematic diagram of the drive motor structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the push plate structure of the present invention;

[0030] Figure 7 for Figure 4 Enlarged structural diagram of section A in the middle;

[0031] Figure 8 for Figure 4 Enlarged structural diagram of section B in the middle;

[0032] Figure 9for Figure 4 Enlarged structural diagram of section C.

[0033] In the diagram: 1. Crusher; 2. Sand making machine; 3. Screening mechanism; 301. Screening container; 302. Connecting pipe; 303. Drive motor; 304. Screening screen; 305. Push plate; 306. Pushing plate; 307. Sand screening plate; 308. Water screening plate; 309. Inclined protrusion; 310. Guide column; 311. Electric telescopic rod; 312. Spiral plate; 4. Flushing mechanism; 401. Connecting box; 402. Drive pump; 403. Filter screen; 404. Drainage plate; 405. Pushing water plate; 406. Limiting plate; 407. Sludge pushing plate; 408. Baffle plate; 409. Mounting frame. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0036] Example 1: Please refer to Figures 1-7 The present invention provides a technical solution: a pollution-free construction waste sand making equipment, including a crusher 1, a sand making machine 2 fixedly connected to the bottom of the crusher 1, a drive structure provided on the outer wall of the crusher 1, a drive structure provided on the outer wall of the sand making machine 2, a screening mechanism 3 fixedly connected to the bottom of the sand making machine 2, and a washing mechanism 4 fixedly connected to the bottom of the screening mechanism 3.

[0037] Screening agency 3 includes:

[0038] Screening container 301 is installed at the bottom of crusher 1;

[0039] The sand screening plate 307 is installed inside the screening container 301 and is used to screen sand particles of qualified size and sand particles of unqualified size.

[0040] The water sieve plate 308 is located inside the screening container 301 at the bottom of the sand sieve plate 307. The water sieve plate 308 is used to separate sand particles and water.

[0041] The building wall is broken up beforehand, and the broken concrete blocks are put into the crusher 1. The crusher 1 crushes the concrete blocks into small pieces, and the sand making machine 2 grinds the concrete fragments into sand particles. The sand particles are discharged downwards into the screening mechanism 3.

[0042] The vibration of the sand screening plate 307 and the water screening plate 308 screens the prepared sand particles. Sand particles that do not meet the size requirements need to be reprocessed. Inside the screening container 301, a pusher plate 306 is fixedly connected to the right side of the sand screening plate 307, and the right side of the water screening plate 308 is fixedly connected to the pusher plate 306. Inside the screening container 301, a guide post 310 is fixedly connected to the bottom of the water screening plate 308. The pusher plate 306 is movably connected to the outer wall of the guide post 310. An electric telescopic rod 311 is fixedly connected to the left side of the screening container 301, and the left telescopic end of the electric telescopic rod 311 is fixedly connected to the pusher plate 306. A water injection port is provided at the top of the screening container 301. Before sand making, water is injected into the screening container 301 until water overflows from the screening container 301.

[0043] Several inclined protrusions 309 are fixedly connected to the top of the sand screening plate 307, and several inclined protrusions 309 are fixedly connected to the top of the water screening plate 308. The left side of the screening container 301 is provided with discharge ports corresponding to the sand screening plate 307 and the water screening plate 308 respectively.

[0044] The electric telescopic rod 311 extends and retracts continuously, which in turn pushes the push plate 306 to move back and forth on the electric telescopic rod 311, causing the push plate 306 to move left and right. This, in turn, causes the sand screening plate 307 and the water screening plate 308 to sway back and forth. Sand particles fall from the sand making machine 2 through the connecting pipe 302 into the top of the sand screening plate 307 inside the screening container 301. Sand particles that meet the requirements will fall into the top of the water screening plate 308 through the filter holes on the sand screening plate 307. Sand particles that do not meet the requirements will remain on the top of the sand screening plate 307. As the sand screening plate 307 and the water screening plate 308 move back and forth, the inclined protrusion 309 will push the sand particles on the top of the water screening plate 308 and the sand screening plate 307, causing the sand particles to move to the left and causing unqualified sand particles and qualified sand particles to be discharged from different outlets, so as to facilitate the reprocessing of unqualified sand particles.

[0045] Since the water screening plate 308 and the sand screening plate 307 are inclined surfaces, when the holes on the sand screening plate 307 are blocked by sand particles, the sand screening plate 307 is pushed to the left. The sand particles blocked in the filter holes of the sand screening plate 307 will be pushed out of the holes due to the resistance of the water, thus avoiding the filter holes on the sand screening plate 307 from being blocked by sand particles, which would lead to a decrease in subsequent screening efficiency.

[0046] A large amount of dust is generated during the crushing and sand making process, and it is necessary to prevent the dust from spreading and affecting the environment. The top of the screening container 301 is fixedly connected to the connecting pipe 302, and the top of the connecting pipe 302 is fixedly connected to the bottom of the sand making machine 2. The drive motor 303 is fixedly connected inside the connecting pipe 302. The top output shaft of the drive motor 303 is fixedly connected to the screening screen 304. The bottom of the screening screen 304 is fixedly connected to the spiral plate 312, and the top of the screening screen 304 is fixedly connected to the push plate 305.

[0047] After being processed by the sand making machine 2, the sand particles fall onto the top of the screening screen 304. The drive motor 303 drives the screening screen 304 to rotate, and the spiral plate 312 at the bottom of the screening screen 304 is also driven to rotate. The spiral plate 312 pushes the air downward, causing the top of the crusher 1 to generate an intake airflow, reducing the dust emitted during processing. At the same time, the airflow will move the fine particles downward quickly, and cause the fine sand to pass through the holes on the screening screen 304 and fall onto the top of the sand screening plate 307. The larger sand particles will remain on the top of the screening screen 304, and the push plate 305 on the top of the screening screen 304 will push the large sand particles, causing them to move to both sides under the action of centrifugal force and fall onto the top of the sand screening plate 307. This allows the fine sand particles and the larger sand particles to be dispersed and fall onto the top of the sand screening plate 307, which can prevent the fine sand particles from being mixed between the larger sand particles and having difficulty passing through the sand screening plate 307 quickly.

[0048] Example 2: Please refer to Figures 1-9 Based on Embodiment 1, the present invention provides a technical solution:

[0049] Dust easily adheres to the surface of sand particles, causing them to stick together. This results in sand particles that meet the size requirements passing through the top of the sand sieve plate 307 and failing to fall onto the top of the water sieve plate 308. Consequently, qualified sand particles are mixed with unqualified sand particles, requiring qualified sand particles to be reprocessed. This increases the number of processing steps, reduces the output speed of qualified sand particles, and decreases processing efficiency.

[0050] The rinsing mechanism 4 includes a connecting box 401, which is fixedly connected to the bottom of the screening container 301. A drive pump 402 is fixedly connected to the front of the screening container 301, and a drainage plate 404 is fixedly connected to the top of the screening container 301, which is located on the top of the sand screening plate 307.

[0051] The connecting box 401 is connected to the drive pump 402 through a pipe, and the drive pump 402 is connected to the drain plate 404 through a pipe. A filter screen 403 is fixedly connected to the top of the connecting box 401 at the connection between the screening container 301 and the connecting box 401.

[0052] Water inside the screening container 301, after being filtered through the screening screen 304, flows into the drive pump 402. The drive pump 402 draws water from the connecting box 401 through a pipe and sends it into the drain plate 404 for discharge. The drain plate 404 discharges water downwards, allowing the water to wash the sand particles on the top of the sand screening plate 307, thus cleaning the sand particles. Since the top of the sand screening plate 307 is inclined, the downward flowing water pushes the sand particles downwards, causing them to move quickly down the inclined surface of the water screening plate 308 between the two inclined protrusions 309. This also helps to separate the adhering sand particles, allowing them to quickly fall through the filter holes on the sand screening plate 307 to the bottom of the sand screening plate 307. At the same time, the sand particles are pushed downwards by the water flow, which helps them pass through the water screening plate 308 more quickly.

[0053] When the sand production volume is large, the sand particles at the top of the sand screen plate 307 can only move to the left by being pushed by the inclined protrusion 309. When the height of the sand particles accumulated exceeds the height of the inclined protrusion 309, the pushing force of the sand particles will be greatly reduced. Since the water screen plate 308 is a sloping structure, the water discharged from the top of the drive motor 303 will push the sand particles at the top of the sand screen plate 307 that are higher than the inclined protrusion 309 to the left. This can prevent the sand particles that have not been screened from accumulating on the top layer from being directly discharged through the sand screen plate 307, which would cause qualified sand particles to be processed again along with unqualified sand particles.

[0054] Several push plates 405 are movably connected to the bottom of the water sieve plate 308, and limiting plates 406 are fixedly connected to the bottom of the water sieve plate 308 on both the left and right sides of the push plates 405.

[0055] The sand screening plate 307 is driven by the push plate 306 to sway back and forth, which causes all the water pushing plates 405 to also sway back and forth. During the swaying of the water pushing plates 405 in one direction, the water pushing plates 405 will be resisted and rotated, and will be intercepted by the corresponding limiting plate 406. This causes the dirt pushing plate 407 to push the water pushing plate 405 to move through the limiting plate 406, so that the water pushing plate 405 moves downward in an inclined state. This can push the water at the bottom of the sand screening plate 307 downward, thereby reducing the water pressure at the bottom of the water screening plate 308, increasing the pressure difference between the top and bottom of the sand screening plate 307, and further accelerating the passage of sand particles through the sand screening plate 307.

[0056] The water used to wash sand particles will contain impurities, which will affect the operation of the drive pump 402. A mounting bracket 409 is fixedly connected to the left side of the push plate 306. Several sludge pushing plates 407 are provided at the bottom of the screen plate 308, and the front and back of the sludge pushing plates 407 are rotatably connected to the mounting bracket 409. A baffle plate 408 is fixedly connected to the bottom of the mounting bracket 409 on the right side of the sludge pushing plates 407. A door that can be opened is provided on the left side of the screening container 301.

[0057] The filter screen 403 filters impurities washed from the sand. Simultaneously, as the push plate 306 moves to the left by the mounting bracket 409, the rotation of the push plate 407 is restricted by the blocking plate 408, thus pushing the impurities filtered at the top of the filter screen 403 to the left. When the push plate 407 is moved to the right by the mounting bracket 409, it will flip due to water resistance, reducing its effect on pushing impurities at the bottom of the screening container 301. With the push plate 306 constantly swaying left and right, the push plate 407 can push the impurities inside the screening container 301 to the left, making it easier to open the door on the left side of the screening container 301 later to clean the impurities accumulated inside the screening container 301.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A non-polluting construction waste to sand device comprising a crusher (1) characterised in that: The bottom of the crusher (1) is fixedly connected with a sand making machine (2), the outer wall of the crusher (1) is provided with a driving structure, the outer wall of the sand making machine (2) is provided with a driving structure, the bottom of the sand making machine (2) is fixedly connected with a screening mechanism (3), and the bottom of the screening mechanism (3) is fixedly connected with a flushing mechanism (4). The screening mechanism (3) comprises: A screening container (301) is arranged at the bottom of the crusher (1); A sand screening plate (307) is arranged inside the screening container (301); A water screening plate (308) is arranged inside the screening container (301) and located at the bottom of the sand screening plate (307).

2. A non-polluting construction waste to sand device according to claim 1, wherein: A pushing plate (306) is fixedly connected to the right side of the sand screening plate (307) inside the screening container (301), and the water screening plate (308) is fixedly connected to the right side of the pushing plate (306); a guide column (310) is fixedly connected to the bottom of the water screening plate (308) inside the screening container (301); the pushing plate (306) is movably connected to the outer wall of the guide column (310); and an electric telescopic rod (311) is fixedly connected to the left side of the screening container (301), and the left side telescopic end of the electric telescopic rod (311) is fixedly connected to the pushing plate (306).

3. A non-polluting construction waste to sand device according to claim 1, wherein: A plurality of inclined convexities (309) are fixedly connected to the top of the sand screening plate (307); a plurality of inclined convexities (309) are fixedly connected to the top of the water screening plate (308); and a discharge port corresponding to the sand screening plate (307) and the water screening plate (308) is arranged on the left side of the screening container (301).

4. A non-polluting construction waste to sand device according to claim 1, wherein: A connecting pipe (302) is fixedly connected to the top of the screening container (301), and the top of the connecting pipe (302) is fixedly connected to the bottom of the sand making machine (2); a driving motor (303) is fixedly connected inside the connecting pipe (302); and a screening net (304) is fixedly connected to the top output shaft of the driving motor (303).

5. A non-polluting construction waste to sand device according to claim 4, wherein: A spiral plate (312) is fixedly connected to the bottom of the screening net (304), and a pushing-off plate (305) is fixedly connected to the top of the screening net (304).

6. A non-polluting construction waste to sand device according to claim 1, wherein: The flushing mechanism (4) comprises a communication box (401) fixedly connected to the bottom of the screening container (301); a driving pump (402) is fixedly connected to the front of the screening container (301); and a drainage plate (404) is fixedly connected to the top inside the screening container (301) and located at the top of the sand screening plate (307).

7. A non-polluting construction waste to sand device according to claim 6, wherein: The communication box (401) is connected with the driving pump (402) through a pipeline, and the driving pump (402) is connected with the drainage plate (404) through a pipeline.

8. A non-polluting construction waste to sand device according to claim 6, wherein: A filter screen (403) is fixedly connected to the top of the screening container (301) and the connection between the screening container (301) and the communication box (401).

9. A non-polluting construction waste to sand device according to claim 1, wherein: A plurality of water pushing plates (405) are movably connected to the bottom of the water screening plate (308); and limiting plates (406) are fixedly connected to the left and right sides of the bottom of the water screening plate (308).

10. A non-polluting construction waste to sand device according to claim 2, wherein: The left side of the pushing plate (306) is fixedly connected with a mounting rack (409), the bottom of the water screening plate (308) is provided with a plurality of dirt pushing plates (407), the front and back surfaces of the dirt pushing plates (407) are rotationally connected with the mounting rack (409), the bottom of the mounting rack (409) is fixedly connected with a blocking plate (408) on the right side of the dirt pushing plate (407), and the left side of the screening container (301) is provided with an openable door.

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