Building type gravel processing system for preparing spray mixture and concrete aggregate in underground chamber
By integrating multiple devices into a floor-type sand and gravel processing system within an underground tunnel, the efficient preparation of sand and gravel concrete is achieved. This solves the problems of the sand and gravel concrete system being far from the material handling point and inconvenient transportation during the construction of underground tunnels, realizing efficient and environmentally friendly sand and gravel processing and concrete production.
Patent Information
- Application Number
- CN202422982767.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-04
AI Technical Summary
In the construction of underground chambers, the sand and gravel concrete system is far from the material receiving point, which is inconvenient to transport, poses a risk of quality segregation, and requires high equipment investment. Furthermore, long-distance transportation may cause pipeline blockage, and the transfer of slag materials has a negative impact on the environment.
Design a tower-type sand and gravel processing system in an underground chamber, integrating feeding and coarse crushing devices, semi-finished material conveying devices, sand and gravel exiting the tower, finished material conveying devices, finished material storage and metering devices, and a concrete system. It includes medium crushing, screening, shaping and sand making, and washing sand equipment to achieve efficient processing of sand and gravel in the chamber.
It enables the efficient preparation of sand and gravel concrete, simplifies equipment structure, reduces energy consumption, lowers transportation costs, reduces environmental pollution, meets environmental protection requirements, and improves production efficiency.
Smart Images
Figure CN223573466U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to aggregate processing technical field, especially in the preparation of spray mixed material and concrete aggregate's floor type sandstone processing system in underground chamber. BACKGROUND
[0002] Many countries focus on projects, such as hydropower station, key railway project, key highway project, water diversion project and other major strategic infrastructure projects, in the construction process, long distance underground chamber usually exists, in the construction process, the sandstone concrete system is usually far away from the material point, and it is inconvenient to transport, there is a risk of quality segregation in long distance transportation, slump loss, and the requirement of conveying equipment is higher, the risk of pipeline blockage is higher, the equipment investment, maintenance and transportation cost are higher, in addition, the slag of chamber excavation needs to be transported to the outside storage field, which may cause negative impact on the environment, including land resource occupation, water pollution, ecological balance destruction and so on, which violates the goal of "0" slag of engineering construction. CONTENT OF UTILITY MODEL
[0003] In order to improve the above-mentioned sandstone processing system construction process, the sandstone concrete system is usually far away from the material point, and it is inconvenient to transport, and the structure of the existing equipment is relatively complex, and the energy consumption is large, the utility model provides a floor type sandstone processing system for preparing spray mixed material and concrete aggregate in underground chamber.
[0004] The utility model provides a floor type sandstone processing system for preparing spray mixed material and concrete aggregate in underground chamber, adopts the following technical scheme:
[0005] A floor type sandstone processing system for preparing spray mixed material and concrete aggregate in underground chamber, comprising feeding and coarse crushing device, semi-finished product material conveying device, sandstone same output building, finished product material conveying device, finished product material storage and metering device and concrete system, the output end of finished product material storage and metering device is connected with the input end of concrete system;
[0006] The sandstone same output building is provided with medium crushing device, three belt conveyors, two lifting equipment, first screening device, fine crushing device, shaping sand making device, second screening device and water washing sand equipment;
[0007] The material discharged from the feeding and coarse crushing device is conveyed to the intermediate crushing device by the semi-finished product conveying device, the material discharged from the intermediate crushing device is conveyed to the feeding port of the first screening device by the belt conveyor and the lifting equipment, the first screening device comprises a first screen and a second screen, the oversize of the first screen is conveyed to the fine crushing device, the fine crushing device is above the belt conveyor, the oversize of the second screen is respectively conveyed to the sand shaping device and the first finished product pile on the finished product storage and metering device, the undersize of the first screening device falls into the second screening device, and the material discharged from the sand shaping device is conveyed to the feeding port of the second screening device by the belt conveyor and the lifting equipment;
[0008] The second screening device comprises a third screen, a fourth screen and a fifth screen, the oversize of the third screen is respectively conveyed to the sand shaping device and the second finished product pile outside the sand and stone common output building, the oversize of the fourth screen is respectively conveyed to the sand shaping device, the second finished product pile on the finished product storage and metering device or the third finished product pile, and the oversize of the fifth screen is respectively conveyed to the sand shaping device and the sand washing equipment, the undersize of the second screening device falls into the sand washing equipment, and the material discharged from the sand washing equipment is conveyed to the finished product storage and metering device to form the fourth finished product pile by the finished product conveying device.
[0009] Optionally, in the above-mentioned building type sandstone processing system for preparing shotcrete and concrete aggregate in an underground chamber, the feeding and coarse crushing device comprises a rod bar feeder and a jaw crusher, the output end of the rod bar feeder is connected to the input end of the jaw crusher, and the rod bar feeder and the jaw crusher are both above the semi-finished product conveying device, and the semi-finished product conveying device is a trough conveyor.
[0010] Optionally, in the above-mentioned building type sandstone processing system for preparing shotcrete and concrete aggregate in an underground chamber, the sand and stone common output building adopts a detachable steel structure, and each floor can be integrally detached and connected, and the intermediate crushing device, the three belt conveyors, the two lifting equipment, the first screening device, the fine crushing device, the sand shaping device, the second screening device and the sand washing equipment are detachably connected to the sand and stone common output building.
[0011] Optionally, in the above-mentioned building type sandstone processing system for preparing shotcrete and concrete aggregate in an underground chamber, the input end of the fine crushing device is provided with a second buffer bin, and the oversize of the first screen is conveyed to the second buffer bin by a chute.
[0012] Optionally, in the floor type sandstone processing system for preparing shotcrete and concrete aggregate in underground chamber, the input end of the shaping sand making device is provided with a third buffer bin, one part of the sieve residue of the second screen is conveyed into the third buffer bin through a chute, and the other part of the sieve residue is conveyed onto the first finished product pile through the chute.
[0013] Optionally, in the floor type sandstone processing system for preparing shotcrete and concrete aggregate in underground chamber, one part of the sieve residue of the third screen is conveyed into the third buffer bin through a chute, and the other part of the sieve residue is conveyed onto the second finished product pile, and the top of the second screen and the third screen is provided with a spraying device.
[0014] Optionally, in the floor type sandstone processing system for preparing shotcrete and concrete aggregate in underground chamber, one part of the sieve residue of the fourth screen is conveyed into the third buffer bin through a chute, and the other part of the sieve residue is conveyed onto the second finished product pile or the third finished product pile.
[0015] Optionally, in the floor type sandstone processing system for preparing shotcrete and concrete aggregate in underground chamber, the input end of the water-washed sand equipment is provided with a fourth buffer bin, one part of the sieve residue of the fifth screen is conveyed into the third buffer bin through a chute, and the other part is conveyed into the fourth buffer bin through a chute, the water-washed sand equipment comprises a spiral sand washing machine and a dehydration screen, and the input end of the spiral sand washing machine is connected with the output end of the second screening device.
[0016] Optionally, in the floor type sandstone processing system for preparing shotcrete and concrete aggregate in underground chamber, the input end of the medium crushing device is provided with a first buffer bin, and the discharging end of the semi-finished product conveying device is connected with the first buffer bin.
[0017] Optionally, in the floor type sandstone processing system for preparing shotcrete and concrete aggregate in underground chamber, the floor type sandstone processing system is based on the ground layer, and is sequentially divided into a first layer, a second layer, a third layer and a fourth layer from bottom to top, the shaping sand making device and the water-washed sand equipment are installed on the ground layer of the floor type sandstone processing system, the medium crushing device, the fine crushing device, the third buffer bin and the fourth buffer bin are installed on the first layer of the floor type sandstone processing system, the second screening device, the first buffer bin and the second buffer bin are installed on the second layer of the floor type sandstone processing system, the first screening device is installed on the third layer of the floor type sandstone processing system, the feeding and coarse crushing device and the semi-finished product conveying device are installed on the ground, the base of the lifting equipment is arranged on the ground layer, one of the three belt conveyors is installed on the fourth layer of the floor type sandstone processing system, and the other two belt conveyors are installed on the ground layer of the floor type sandstone processing system.
[0018] In summary, the floor type sandstone processing system has at least one of the following beneficial effects:
[0019] The utility model discloses a floor type arrangement of integrated type gathers each device together, make its simple structure, layout is reasonable, be favorable to the land saving, reduce energy consumption, convenient centralized control, automation and wisdom degree are high to the realization in the limited space arrangement of preparation of spray mixed material and concrete aggregate of floor type sandstone processing system in underground chamber, realize sandstone same, satisfy the production need.
[0020] The utility model discloses a floor type sandstone processing system that can produce secondary concrete aggregate, tertiary concrete aggregate and sprayed concrete aggregate in the limited space of an underground chamber. The concrete aggregate can also be used to produce only secondary concrete aggregate, thus making the device more practical.
[0021] The utility model discloses a floor type sandstone processing system that can produce secondary concrete aggregate, tertiary concrete aggregate and sprayed concrete aggregate in the limited space of an underground chamber. The concrete aggregate can also be used to produce only secondary concrete aggregate, thus making the device more practical. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 is the flow chart of the utility model;
[0023] Figure 2 is the front view of the utility model;
[0024] Figure 3 is the left view of the utility model;
[0025] Figure 4 is the right view of the utility model.
[0026] In the figure: 1, feeding and coarse crushing device; 11, rod bar feeder; 12, jaw crusher; 2, semi-finished product conveying device; 3, sandstone output floor; 31, medium crushing device; 311, first buffer bin; 32, belt conveyor; 33, lifting equipment; 34, first screening device; 341, first screen; 342, second screen; 35, fine crushing device; 351, second buffer bin; 36, shaping sand making device; 361, third buffer bin; 37, second screening device; 371, third screen; 372, fourth screen; 373, fifth screen; 38, water washing sand equipment; 381, fourth buffer bin; 382, spiral sand washer; 383, dehydration screen; 39, spraying device; 4, finished product conveying device; 5, finished product storage and metering device; 51, first finished product pile; 52, second finished product pile; 53, third finished product pile; 54, fourth finished product pile; 6, concrete system. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings Figures 1-4 The utility model will be further described in detail.
[0028] Please refer to the drawings in the specification Figures 1-4 The utility model provides an embodiment: a floor type sandstone processing system for preparing spray mixed material and concrete aggregate in underground chamber, which comprises feeding and coarse crushing device 1, semi-finished product material conveying device 2, sandstone same output floor 3, finished product material conveying device 4, finished product material storage and metering device 5 and concrete system 6, and the output end of the finished product material storage and metering device 5 is connected with the input end of the concrete system 6.
[0029] After the underground chamber excavation material enters the feeding and coarse crushing device 1, it is sent to the sandstone same output floor 3 through the semi-finished product material conveying device 2, and the finished product aggregate of each level produced after processing in the floor enters the finished product material storage and metering device 5 through the finished product material conveying device 4, for the production and use of the concrete system 6.
[0030] The concrete system 6 can adopt a concrete mixing station or a concrete mixing floor.
[0031] The feeding and coarse crushing device 1 comprises a rod bar feeder 11 and a jaw crusher 12, the output end of the rod bar feeder 11 is connected with the input end of the jaw crusher 12, and the rod bar feeder 11 and the jaw crusher 12 are both above the semi-finished product material conveying device 2, and the semi-finished product material conveying device 2 is a trough conveyor;
[0032] It should be noted that the jaw crusher 12 can also adopt a gyratory crusher, a hammer crusher, a impact crusher, etc., and can also adopt a mobile crusher.
[0033] The sandstone same output floor 3 is provided with a medium crushing device 31, three belt conveyors 32, two lifting devices 33, a first screening device 34, a fine crushing device 35, a shaping sand making device 36, a second screening device 37 and a sand washing equipment 38.
[0034] The sandstone same output floor 3 adopts a detachable steel structure, and each floor can be integrally detached and connected, and the medium crushing device 31, the three belt conveyors 32, the two lifting devices 33, the first screening device 34, the fine crushing device 35, the shaping sand making device 36, the second screening device 37 and the sand washing equipment 38 are detachably connected with the sandstone same output floor 3.
[0035] The shaping sand making device 36 adopts a vertical shaft impact crusher, and can also adopt a column mill or a column crusher and other shaping sand making equipment.
[0036] The material discharged from the feeding and coarse crushing device 1 is conveyed to the medium crushing device 31 through the semi-finished product material conveying device 2, and the input end of the medium crushing device 31 is provided with a first buffer bin 311, and the dropping end of the semi-finished product material conveying device 2 is connected with the first buffer bin 311.
[0037] The material discharged from the intermediate crushing device 31 is conveyed to the inlet of the first screening device 34 by the belt conveyor 32 and the lifting device 33, the first screening device 34 comprises a first screen 341 and a second screen 342, both of which are vibrating screens, the first screen 341 has a pore size of 40 mm, and the second screen 342 has a pore size of 20 mm.
[0038] The oversize of the first screen 341 is conveyed into the fine crushing device 35, the input end of the fine crushing device 35 is provided with a second buffer bin 351, and the oversize of the first screen 341 is conveyed into the second buffer bin 351 through a chute.
[0039] It should be noted that the oversize of the first screen 341 of the first screening device 34 is sent to the fine crushing device 35 and is conveyed to the first screening device 34 by the belt conveyor 32 and the lifting device 33 together with the intermediate crushed material to form a closed loop.
[0040] The fine crushing device 35 is above the belt conveyor 32, and the oversize of the second screen 342 is conveyed into the shaping sand making device 36 and the first finished material pile 51 of the finished material storage and metering device 5, respectively, the input end of the shaping sand making device 36 is provided with a third buffer bin 361, and one part of the oversize of the second screen 342 is conveyed into the third buffer bin 361 through a chute, and the other part of the oversize is conveyed onto the first finished material pile 51 through a chute.
[0041] It should be noted that the oversize of the second screen 342 of the first screening device 34 is divided into two parts: one part is used as finished material and is sent into the first finished material pile 51 with a particle size of 20-40 mm through a chute and the finished material conveying device 4, and the other part is sent to the third buffer bin 361 in front of the shaping sand making device 36 through a chute, and the amount of material entering the first finished material pile 51 and the amount of material entering the shaping sand making device 36 can be controlled by adjusting the valve.
[0042] The undersize of the first screening device 34 falls into the second screening device 37, and the material discharged from the shaping sand making device 36 is conveyed to the inlet of the second screening device 37 by the belt conveyor 32 and the lifting device 33.
[0043] The inlets of the first screening device 34 and the second screening device 37 adopt diffusion devices to uniformly distribute the material on the cross section of the screen, and the lifting device 33 adopts a bucket elevator.
[0044] It should be noted that the oversize of the second screen 342 of the first screening device 34 can be sent to the shaping sand making device 36 and the first finished material pile 51 respectively, and the undersize of the first screening device 34 enters the second screening device 37; the material passing through the shaping sand making device 36 is conveyed to the second screening device 37 by the belt conveyor 32 and the lifting equipment 33 to form a closed loop.
[0045] The second screening device 37 comprises a third screen 371, a fourth screen 372 and a fifth screen 373, and the third screen 371, the fourth screen 372 and the fifth screen 373 of the second screening device 37 are all vibrating screens, the aperture of the third screen 371 of the second screening device 37 is 10 mm, the aperture of the fourth screen 372 of the second screening device 37 is 5 mm, and the aperture of the fifth screen 373 of the second screening device 37 is 3 mm.
[0046] The oversize of the third screen 371 is conveyed into the shaping sand making device 36 and outside the sandstone exit building 3 to form a second finished material pile 52, and a part of the oversize of the third screen 371 is conveyed into the third buffer bin 361 through a chute, and the other part of the oversize is conveyed onto the second finished material pile 52 through a chute, and the top of the second screen 342 and the third screen 371 is provided with a spraying device 39, so as to facilitate the washing of the aggregate on the screen surface.
[0047] It should be noted that the oversize of the third screen 371 of the second screening device 37 is divided into two parts: a part as a finished product is sent into the second finished material pile 52 with a particle size of 5-20 mm through a chute and a finished product conveying device 4, and the other part is sent to the third buffer bin 361 in front of the shaping sand making device 36 through a chute, and the amount of material entering the second finished material pile 52 and the amount of material entering the shaping sand making device 36 can be controlled by adjusting the valve.
[0048] The oversize of the fourth screen 372 is conveyed into the shaping sand making device 36, onto the second finished material pile 52 on the finished material storage and metering device 5, or to form a third finished material pile 53, and a part of the oversize of the fourth screen 372 is conveyed into the third buffer bin 361 through a chute, and the other part of the oversize is conveyed onto the second finished material pile 52 or the third finished material pile 53 through a chute.
[0049] It should be noted that the oversize of the fourth screen 372 of the second screening device 37 is divided into two parts: a part as a finished product is sent into the second finished material pile 52 with a particle size of 5-20 mm or the third finished material pile 53 with a particle size of 5-10 mm through a chute and a finished product conveying device 4, and the other part is sent to the third buffer bin 361 in front of the shaping sand making device 36 through a chute, and the amount of material entering the second finished material pile 52 or the third finished material pile 53 and the amount of material entering the shaping sand making device 36 can be controlled by adjusting the valve.
[0050] The oversize of the fifth screen 373 is respectively transported into the sand shaping device 36 and the sand washing device 38, the undersize of the second screening device 37 falls into the sand washing device 38, the material discharged from the sand washing device 38 is transported to the fourth finished product pile 54 on the finished product storage and metering device 5 through the finished product material conveying device 4, the input end of the sand washing device 38 is provided with a fourth buffer bin 381, one part of the oversize of the fifth screen 373 is transported into the third buffer bin 361 through a chute, and the other part is transported into the fourth buffer bin 381 through a chute, the sand washing device 38 comprises a spiral sand washer 382 and a dehydration screen 383, and the input end of the spiral sand washer 382 is connected with the output end of the second screening device 37.
[0051] It should be noted that the oversize of the fifth screen 373 of the second screening device 37 is divided into two parts: one part is sent to the third buffer bin 361 in front of the sand shaping device 36 through a chute, and the rest is sent to the sand washing device 38 through a chute, the material with a particle size of 3-40 mm in the third buffer bin 361 enters the sand shaping device 36, the sand shaping device 36 adopts a vertical shaft impact crusher, the crushed material is returned to the inlet of the second screening device 37 through the belt conveyor 32 and the lifting equipment 33, and the amount of the material entering the sand washing device 38 and the amount of the material entering the sand shaping device 36 can be controlled by adjusting the valve.
[0052] It should be noted that the sand washing device 38 can also adopt a wheel type sand washing all-in-one machine, the sand washing water is recycled through the water treatment equipment, the sand washing water is sprayed from above the wheel type sand washing all-in-one machine, the incoming slurry enters the sand washing tank for hydraulic classification, the coarse particles sink down and the fine particles are discharged from overflow, the bucket wheel loosens the material at the bottom to stir out the fine mud and also dredges the sand to realize the whole sand washing process, the waste water enters the water treatment equipment for treatment after passing through the pipeline, and when the clean water in the clean water tank is insufficient, the water can be supplemented, and the wheel type sand washing all-in-one machine and the water treatment equipment are prior arts.
[0053] It should be noted that the oversize of the third screen 371 of the second screening device 37 can be respectively sent to the sand shaping device 36 and the second finished product pile 52, the oversize of the fourth screen 372 of the second screening device 37 can be respectively sent to the sand shaping device 36, the second finished product pile 52 or the third finished product pile 53, the oversize of the fifth screen 373 of the second screening device 37 can be respectively sent to the sand shaping device 36 and the sand washing device 38, the undersize of the second screening device 37 enters the sand washing device 38, and the washed machine-made sand enters the fourth finished product pile 54 through the finished product material conveying device 4.
[0054] The sandstone same-out building 3 is divided into four layers from bottom to top based on the ground layer. The shaping sand making device 36 and the sand washing device 38 are installed on the ground layer of the sandstone same-out building 3. The medium crushing device 31, the fine crushing device 35, the third buffer bin 361 and the fourth buffer bin 381 are installed on the first layer of the sandstone same-out building 3. The second screening device 37, the first buffer bin 311 and the second buffer bin 351 are installed on the second layer of the sandstone same-out building 3. The first screening device 34 is installed on the third layer of the sandstone same-out building 3. The feeding and coarse crushing device 1 and the semi-finished product conveying device 2 are installed on the ground. The base of the lifting equipment 33 is arranged on the ground layer. One of the three belt conveyors 32 is installed on the fourth layer of the sandstone same-out building 3, and the other three belt conveyors 32 are installed on the ground layer of the sandstone same-out building 3.
[0055] The semi-finished product conveying device 2 and the finished product conveying device 4 both adopt belt conveyors. The semi-finished product conveying device 2 can also adopt a trough conveyor. The first finished product pile 51, the second finished product pile 52, the third finished product pile 53 and the fourth finished product pile 54 can also adopt a chain conveyor or a screw conveyor.
[0056] Working principle: when the floor type sand processing system for preparing spray mixed material and concrete aggregate in the underground chamber is used, the production process is as follows:
[0057] Process 1: the underground chamber excavation material is transported to the feeding and coarse crushing device 1 by a shovel or a dump truck. The coarsely crushed material is sent to the sandstone same-out building 3 by the semi-finished product conveying device 2. The finished aggregate of each level produced after processing in the building is sent to the finished product storage and metering device 5 by the finished product conveying device 4, and is used for the production of the concrete system 6;
[0058] The semi-finished product is transported to the first screening device 34 through the belt conveyor 32 and the lifting device 33 after passing through the crushing device 31 in the sandstone and out of the building 3, the oversize of the first screen 341 of the first screening device 34 is sent to the fine crushing device 35, and the crushed material is transported to the first screening device 34 through the belt conveyor 32 and the lifting device 33 in a closed loop; the oversize of the second screen 342 of the first screening device 34 can be sent to the shaping sand making device 36 and the first finished product pile 51 respectively, and the undersize of the first screening device 34 enters the second screening device 37; the oversize of the third screen 371 of the second screening device 37 can be sent to the shaping sand making device 36 and the second finished product pile 52 respectively, the oversize of the fourth screen 372 of the second screening device 37 can be sent to the shaping sand making device 36, the second finished product pile 52 or the third finished product pile 53 respectively, the oversize of the fifth screen 373 of the second screening device 37 can be sent to the shaping sand making device 36 and the sand washing device 38 respectively, the undersize of the second screening device 37 enters the sand washing device 38, and the machine-made sand after washing enters the fourth finished product pile 54 through the finished product conveying device 4; the material passing through the shaping sand making device 36 is transported to the second screening device 37 through the belt conveyor 32 and the lifting device 33 in a closed loop.
[0059] Flow 2: When the shaping sand making device 36 adopts a column crusher or a roller crusher, the oversize of the second screen 342 of the first screening device 34 can be sent to the fine crushing device 35 and the first finished product pile 51 through a chute respectively, the flow of each part can be controlled through a valve according to actual needs, and the screen aperture of the first screening device 34 and the second screening device 37 can be adjusted according to the finished product demand.
[0060] The above are preferred embodiments of the present application, not limited to the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape and principle of the present application should be covered in the protection scope of the present application.
Claims
1. A floor-type aggregate processing system for preparing sprayed concrete and concrete aggregates in an underground chamber, characterized in that: It includes a feeding and coarse crushing device (1), a semi-finished material conveying device (2), a sand and gravel discharge tower (3), a finished material conveying device (4), a finished material storage and metering device (5), and a concrete system (6), wherein the output end of the finished material storage and metering device (5) is connected to the input end of the concrete system (6). The sand and gravel extraction tower (3) is equipped with a medium crushing device (31), three belt conveyors (32), two lifting devices (33), a first screening device (34), a fine crushing device (35), a shaping and sand making device (36), a second screening device (37), and a sand washing equipment (38). The material discharged from the feeding and coarse crushing device (1) is conveyed to the medium crushing device (31) through the semi-finished material conveying device (2). The material discharged from the medium crushing device (31) is conveyed to the inlet of the first screening device (34) through the belt conveyor (32) and the lifting device (33). The first screening device (34) includes a first screen (341) and a second screen (342). The material on the first screen (341) is conveyed to the fine crushing device (35). The device (35) is above the belt conveyor (32). The oversize material of the second screen (342) is respectively conveyed to the shaping and sand making device (36) and the first finished material pile (51) on the finished material storage and metering device (5). The undersize material of the first screening device (34) falls into the second screening device (37). The material discharged from the shaping and sand making device (36) is conveyed to the feed inlet of the second screening device (37) through the belt conveyor (32) and the lifting equipment (33). The second screening device (37) includes a third screen (371), a fourth screen (372) and a fifth screen (373). The material oversize of the third screen (371) is conveyed to the shaping and sand making device (36) and discharged outside the building (3) with the sand and gravel to form a second finished material pile (52). The material oversize of the fourth screen (372) is conveyed to the second finished material pile (52) in the shaping and sand making device (36) and the finished material storage and metering device (5) or to form a third finished material pile (53). The material oversize of the fifth screen (373) is conveyed to the shaping and sand making device (36) and the sand washing equipment (38). The material undersize of the second screening device (37) falls into the sand washing equipment (38). The material discharged from the sand washing equipment (38) is conveyed to the finished material storage and metering device (5) through the finished material conveying device (4) to form a fourth finished material pile (54).
2. The floor-type aggregate processing system for preparing sprayed concrete and concrete aggregate in an underground chamber according to claim 1, characterized in that: The feeding and coarse crushing device (1) includes a bar feeder (11) and a jaw crusher (12). The output end of the bar feeder (11) is connected to the input end of the jaw crusher (12). Both the bar feeder (11) and the jaw crusher (12) are located above the semi-finished material conveying device (2), which is a trough conveyor.
3. The floor-type aggregate processing system for preparing sprayed concrete and concrete aggregate in an underground chamber according to claim 1, characterized in that: The sand and gravel co-exit building (3) adopts a detachable steel structure, and each floor can be disassembled and connected as a whole. The medium crushing device (31), three belt conveyors (32), two lifting devices (33), the first screening device (34), the fine crushing device (35), the shaping and sand making device (36), the second screening device (37), and the water washing sand equipment (38) are all detachably connected to the sand and gravel co-exit building (3).
4. The floor-type aggregate processing system for preparing sprayed concrete and concrete aggregate in an underground chamber according to claim 1, characterized in that: The input end of the fine crushing device (35) is provided with a second buffer chamber (351), and the material on the screen of the first screen (341) is transported to the second buffer chamber (351) through a chute.
5. The floor-type aggregate processing system for preparing sprayed concrete and concrete aggregate in an underground chamber according to claim 4, characterized in that: The input end of the shaping and sand making device (36) is provided with a third buffer chamber (361). One part of the material on the second screen (342) is transported to the third buffer chamber (361) through a chute, and the other part of the material on the screen is transported to the first finished material pile (51) through a chute.
6. The floor-type aggregate processing system for preparing sprayed concrete and concrete aggregate in an underground chamber according to claim 5, characterized in that: A portion of the material on the third screen (371) is transported to the third buffer bin (361) via a chute, while the other portion is transported to the second finished product pile (52) via a chute. Spraying devices (39) are provided on the top of both the second screen (342) and the third screen (371).
7. The floor-type aggregate processing system for preparing sprayed concrete and concrete aggregate in an underground chamber according to claim 6, characterized in that: One part of the material on the fourth screen (372) is transported to the third buffer chamber (361) via a chute, and the other part of the material on the screen is transported to the second finished product pile (52) or the third finished product pile (53) via a chute.
8. The floor-type aggregate processing system for preparing sprayed concrete and concrete aggregate in an underground chamber according to claim 7, characterized in that: The input end of the sand washing equipment (38) is provided with a fourth buffer chamber (381). Part of the material on the fifth screen (373) is transported to the third buffer chamber (361) through a chute, and the other part is transported to the fourth buffer chamber (381) through a chute. The sand washing equipment (38) includes a spiral sand washer (382) and a dewatering screen (383). The input end of the spiral sand washer (382) is connected to the output end of the second screening device (37).
9. The floor-type aggregate processing system for preparing sprayed concrete and concrete aggregate in an underground chamber according to claim 8, characterized in that: The input end of the crushing device (31) is provided with a first buffer chamber (311), and the discharge end of the semi-finished material conveying device (2) is connected to the first buffer chamber (311).
10. The floor-type aggregate processing system for preparing sprayed concrete and concrete aggregate in an underground chamber according to claim 9, characterized in that: The sand and gravel extraction tower (3) is based on the ground floor and is divided into four layers from bottom to top. The shaping and sand making device (36) and the sand washing equipment (38) are installed on the ground floor of the sand and gravel extraction tower (3). The medium crushing device (31), the fine crushing device (35), the third buffer chamber (361), and the fourth buffer chamber (381) are installed on the first floor of the sand and gravel extraction tower (3). The second screening device (37), the first buffer chamber (311), and the second buffer chamber (381) are installed on the ground floor of the sand and gravel extraction tower (3). 351) Installed on the second floor of the sand and gravel co-exit building (3), the first screening device (34) is installed on the third floor of the sand and gravel co-exit building (3), the feeding and coarse crushing device (1) and the semi-finished material conveying device (2) are installed on the ground, the foundation of the lifting device (33) is set on the ground floor, one of the three belt conveyors (32) is installed on the fourth floor of the sand and gravel co-exit building (3), and the other two belt conveyors (32) are installed on the ground floor of the sand and gravel co-exit building (3).