Waste treatment device for civil engineering

Abstract

The invention belongs to the technical field of waste treatment, and provides a civil engineering waste treatment device which comprises a crushing assembly used for preliminarily crushing waste, a conveying assembly arranged at the lower end of the crushing assembly and used for conveying the preliminarily crushed waste into a barrel assembly at the tail end of the conveying assembly, and a waste treatment assembly arranged at the tail end of the barrel assembly. A treatment assembly is installed in an inner cavity of the barrel assembly and used for further smashing and grinding the conveyed waste. By integrating the whole process of crushing, conveying and multi-stage grinding, integrating multiple treatment parts through a single shaft and matching with a grading refining structure and a closed design, efficient and continuous treatment of various civil engineering waste is achieved, and the waste recovery value is effectively improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of waste treatment, in particular to a waste treatment device for civil engineering. BACKGROUND

[0002] With the rapid development of the civil engineering industry, the total amount of waste such as waste concrete, waste masonry, and waste steel sections generated during the construction process has increased significantly. If such waste is only treated by landfill, not only will it occupy a large amount of land resources, but it may also cause environmental pollution due to the penetration of harmful substances, and it also wastes the recyclable aggregate resources in the waste;

[0003] However, the current civil engineering waste treatment technology on the market has the following shortcomings: first, the treatment process is scattered, most of the equipment only has single crushing or grinding function, and the crushed waste needs to be transferred to the grinding equipment by manual transfer, which not only reduces the efficiency, but also increases the labor cost, and it is difficult to adapt to the continuous treatment demand of a large amount of waste in the engineering site; second, the treatment quality is difficult to guarantee, the existing equipment mostly adopts single-stage crushing or grinding design, lacks a grading treatment structure, resulting in uneven fineness of the final product and large particle size difference, which cannot meet the requirements of recycled concrete aggregate, roadbed filling material and other scenes for material precision, and the recycling value of waste is low; third, the equipment adaptability is poor, mostly designed for single hardness or form of waste, for example, when treating high-hardness blocky waste concrete, the waste is often stuck due to the asynchronous rotation of the crushing rollers, and when treating low-hardness loose mortar blocks, a large amount of dust is easily generated due to the lack of closed conveying structure, and there is no targeted anti-accumulation and anti-splashing design, which further reduces the treatment stability.

[0004] Therefore, the skilled in the art proposes a waste treatment device for civil engineering, which integrates crushing, transmission, and multi-stage grinding processes, integrates multiple processing components on a single shaft, and is equipped with a grading structure and a closed design, to realize efficient and continuous treatment of multiple types of civil waste, solve the problems of scattered process and uneven product, and improve the recycling value of waste. SUMMARY

[0005] To solve the above technical problems, the application provides a waste treatment device for civil engineering to solve the problems raised in the background art.

[0006] A waste treatment device for civil engineering, comprising a crushing assembly for preliminary crushing of waste, a transmission assembly is arranged at the lower end of the crushing assembly for transmitting the preliminarily crushed waste to a barrel assembly at the end of the transmission assembly, and a processing assembly is installed in the inner cavity of the barrel assembly for further crushing and grinding treatment of the transmitted waste.

[0007] The processing assembly comprises a driven wheel, a rotating shaft is fixedly installed in the middle of the lower end of the driven wheel, a baffle, a crushing knife roller, a spiral conveying piece, a rough roller and a grinding ball are sequentially fixedly installed on the outer surface of the rotating shaft from top to bottom; a plurality of groups of crushing knives are fixedly installed on the outer surface of the crushing knife roller, and a plurality of groups of second grinding blocks are equidistantly fixedly installed on the outer surface of the rough roller.

[0008] Preferably, the crushing assembly further comprises a feeding box, a crushing roller is movably installed in the middle of the inner cavity of the feeding box, the crushing roller is provided in two groups and is installed on the feeding box through a rotating rod, the extended end of the rotating rod penetrates through the feeding box, and a driven bevel gear is fixedly installed on the penetrating end; a fixed frame is fixedly installed on the upper surface of the transmission assembly, a first driving member is fixedly installed on one side of the fixed frame, an activity shaft is fixedly installed on the output end of the first driving member, the activity shaft is located between the inner sides of the fixed member, a driving bevel gear is fixedly installed on the outer surface of the activity shaft, the driving bevel gear is provided in two groups and is oppositely arranged; the driving bevel gears are meshed with the driven bevel gears respectively.

[0009] Preferably, the transmission assembly comprises a transmission box body which is fixedly installed at the opening of the lower end of the feeding box, a second driving member is installed on the outer side of the transmission box body, a rotating roller is fixedly installed on the output end of the second driving member and in the inner cavity of the transmission box body, a spiral auger piece is fixedly installed on the outer surface of the rotating roller, a discharge port is formed in the bottom of the tail end of the transmission box body, and a guide groove is fixedly installed at the discharge port.

[0010] Preferably, the cylinder assembly further comprises a processing cylinder which is arranged at the tail end of the transmission box body, a feeding port is formed in one side of the outer surface of the processing cylinder, the lower end of the processing cylinder is arranged in a bullet shape, a discharge port is formed in the bottom of the processing cylinder, a supporting table is fixedly installed on the other side of the outer surface of the processing cylinder, a third driving member is installed on the supporting table, a driving wheel is installed on the output end of the third driving member, and a belt is arranged on the driving wheel.

[0011] Preferably, the feeding port and the discharge port are communicated through the guide groove.

[0012] Preferably, the inner cavity of the processing cylinder is arranged as a crushing chamber, the crushing knife roller is arranged in the crushing chamber, and the feeding port is directly communicated with the crushing chamber; the baffle is arranged above the feeding port in the crushing chamber.

[0013] Preferably, a thickened wall is fixedly arranged on the inner wall of the inner cavity of the processing cylinder and below the crushing chamber, and the spiral conveying piece is arranged in the inner cavity of the processing cylinder at the thickened wall.

[0014] Preferably, the thickened wall is arranged below the processing barrel cavity to form a coarse grinding cavity, a plurality of first grinding blocks are fixedly installed on the inner wall of the processing barrel at the coarse grinding cavity, and the coarse roller is arranged in the coarse grinding cavity.

[0015] Preferably, the coarse grinding cavity is arranged below to form a fine grinding cavity, and the fine grinding cavity is arranged in a bullet-shaped processing barrel.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1. The present application integrates the whole process of preliminary crushing, automatic transmission and multi-stage grinding, without manual transfer of waste, greatly reduces manual intervention, improves the processing capacity per unit time, and adapts to the large amount of waste demand of engineering.

[0018] 2. The present application adopts a stepped refinement design, and can adjust the processing degree as needed from crushing to grading grinding. The multi-stage refinement processing can convert civil engineering waste into recycled aggregate meeting the requirements of concrete preparation, greatly improving the recycling rate of waste and reducing the amount of landfill.

[0019] 3. The processing barrel of the present application is divided into zones by thickening the wall, forcing the waste to be crushed twice before entering the coarse grinding, avoiding step-by-step processing of waste that has not been sufficiently refined; at the same time, the fine grinding cavity adopts a bullet-shaped design to enhance the impact force of the grinding ball during rotation, ensuring that the fineness of the final product meets the requirements of recycled aggregate for particle accuracy, avoiding secondary processing of waste due to incomplete processing; the optimized chamber structure also improves grinding efficiency, reduces equipment energy consumption, reduces time cost, and ensures stable waste processing quality. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present application;

[0021] Figure 2 is a schematic diagram of the crushing assembly structure of the present application;

[0022] Figure 3 is a schematic diagram of the internal structure of the transmission assembly of the present application;

[0023] Figure 4 is a schematic diagram of the barrel assembly structure of the present application;

[0024] Figure 5 is a schematic diagram of the internal structure of the processing barrel of the present application;

[0025] Figure 6 is a schematic diagram of the processing assembly structure of the present application.

[0026] In the drawings:

[0027] 100. Crushing assembly; 101. Feed box; 102. Crushing roller; 103. Fixing frame; 104. First driving component; 105. Movable shaft; 106. Driving bevel gear; 107. Driven bevel gear; 200. Conveying assembly; 201. Conveying housing; 202. Second driving component; 203. Rotating roller; 204. Screwdriver blade; 205. Discharge port; 206. Guide groove; 300. Cylinder assembly; 301. Processing cylinder; 302. Feed inlet; 30 3. Discharge port; 304. Support platform; 305. Third drive component; 306. Drive wheel; 307. Belt; 308. Crushing chamber; 309. Thickened wall; 310. Coarse grinding chamber; 311. First grinding block; 312. Fine grinding chamber; 400. Processing assembly; 401. Driven wheel; 402. Rotating shaft; 403. Baffle; 404. Crushing roller; 405. Spiral conveyor plate; 406. Coarse roller; 407. Second grinding block; 408. Grinding ball. Detailed Implementation

[0028] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0029] Example: This invention provides a waste treatment device for civil engineering, as shown in the attached document. Figure 1 As shown, it includes a crushing component 100 for preliminary crushing of waste materials. A conveying component 200 is provided at the lower end of the crushing component 100 for conveying the preliminary crushed waste materials to the cylinder component 300 at the end of the conveying component 200. A processing component 400 is installed in the inner cavity of the cylinder component 300 for further crushing and grinding the conveyed waste materials.

[0030] The processing assembly 400 includes a driven wheel 401, a rotating shaft 402 fixedly mounted at the lower center of the driven wheel 401, and a baffle 403, a crushing roller 404, a spiral conveyor plate 405, a coarse roller 406 and grinding balls 408 fixedly mounted sequentially from top to bottom on the outer surface of the rotating shaft 402; multiple sets of crushing blades are fixedly mounted on the outer surface of the crushing roller 404, and multiple sets of second grinding blocks 407 are fixedly mounted at equal intervals on the outer surface of the coarse roller 406.

[0031] As attached Figure 2As shown, the crushing assembly 100 further comprises a feeding box 101, a crushing roller 102 movably mounted in the middle of the inner cavity of the feeding box 101, the crushing roller 102 is provided with two groups, which are installed on the feeding box 101 through a rotating rod, the extended end of the rotating rod penetrates the feeding box 101, and the penetrating end is fixedly installed with a driven bevel gear 107; a fixed frame 103 is fixedly installed on the upper surface of the transmission assembly 200, a first driving member 104 is fixedly installed on one side of the fixed frame 103, and the first driving member 104 includes but is not limited to a motor; an active shaft 105 is fixedly installed at the output end of the first driving member 104, the active shaft 105 is located between the fixed members, a driving bevel gear 106 is fixedly arranged on the outer surface of the active shaft 105, the driving bevel gear 106 is provided with two groups and is oppositely arranged; the driving bevel gear 106 is meshed with the driven bevel gear 107. The feeding box 101 serves as a feeding inlet for waste materials, defines a waste material entering path, effectively avoids waste material scattering during feeding, and ensures concentrated feeding; by starting the first driving member 104, the first driving member 104 drives the oppositely arranged driving bevel gears 106 on the active shaft 105 to rotate, so that the driven bevel gears 107 meshed therewith rotate, and then drive the two groups of crushing rollers 102 to rotate inwardly; by the two groups of crushing rollers 102 rotating oppositely, large pieces of waste materials input are subjected to extrusion and shearing, so that the large pieces of waste materials are crushed into small pieces, reducing the subsequent processing load.

[0032] As shown in the accompanying drawings Figure 3 The transmission assembly 200 comprises a transmission box body 201 fixedly installed at the lower end opening of the feeding box 101, a second driving member 202 is installed on the outer side of the transmission box body 201, and the second driving member 202 includes but is not limited to a motor; a rotating roller 203 is fixedly installed at the output end of the second driving member 202 and located in the inner cavity of the transmission box body 201, a spiral flighting 204 is fixedly arranged on the outer surface of the rotating roller 203, a discharge port 205 is opened at the bottom of the tail end of the transmission box body 201, and a guide groove 206 is fixedly installed at the discharge port 205. The transmission box body 201 accommodates the rotating roller 203 and the spiral flighting 204, forming a closed waste material conveying channel, thereby preventing dust or scattering of waste materials during conveying and reducing pollution to the environment; by starting the second driving member 202, the transmission roller is driven to rotate, so that the spiral flighting 204 on the outer surface spirally pushes the preliminarily crushed waste materials, conveying them to the cylinder assembly 300, realizing directional and continuous conveying of waste materials, while avoiding blockage of the conveying channel; the waste materials in the transmission box body 201 are guided to the feeding port 302 of the cylinder assembly 300 through the discharge port 205 and the guide groove 206, realizing accurate directional conveying and effectively preventing waste materials from leaking out.

[0033] As shown in the accompanying drawings Figure 4As shown, the barrel assembly 300 further comprises a processing barrel 301 arranged at the end of the transmission box 201, and a feeding port 302 is arranged on one side of the outer surface of the processing barrel 301, and the feeding port 302 is communicated with the discharging port 205 through the guide groove 206; the lower end of the processing barrel 301 is arranged in a bullet head shape, and a discharging port 303 is arranged at the bottom thereof, and a supporting table 304 is fixedly installed on the other side of the outer surface of the processing barrel 301, and a third driving member 305 is installed on the supporting table 304, and the third driving member 305 includes but is not limited to a motor; a driving wheel 306 is installed at the output end of the third driving member 305, and a belt 307 is arranged on the driving wheel 306. The processing barrel 301 is a core container for secondary crushing and grinding of waste, separates different processing cavities, provides a closed and orderly space for subsequent multi-stage processing, and ensures the processing effect. The discharging port 205 receives the waste conveyed by the guide groove 206 and introduces it into the crushing cavity 308. The third driving member 305 is started, the driving wheel 306 at the output end thereof drives the belt 307 to rotate the driven wheel 401 of the processing assembly 400, and driving force is provided for the rotating shaft 402 of the processing assembly 400.

[0034] As shown in the accompanying drawings, Figure 5 The upper part of the inner cavity of the processing barrel 301 is arranged as a crushing cavity 308, the crushing cutter roller 404 is arranged in the crushing cavity 308, and the feeding port 302 is directly communicated with the crushing cavity 308; the baffle 403 is arranged above the feeding port 302 in the crushing cavity 308. The crushing cavity 308 is located at the upper part of the inner cavity of the processing barrel 301 and is directly communicated with the feeding port 302, is used for accommodating the crushing cutter roller 404 of the processing assembly 400, and further crushes the waste by fully cutting the waste through the crushing cutter roller 404;

[0035] The thickened wall 309 is fixedly arranged on the inner wall of the inner cavity of the processing barrel 301 and below the crushing cavity 308, and the spiral conveying piece 405 is arranged in the inner cavity of the processing barrel 301 at the thickened wall 309. The thickened wall 309 is arranged on the inner wall of the inner cavity of the processing barrel 301 and below the crushing cavity 308, and is used for separating the crushing cavity 308 and the coarse grinding cavity 310; through the thickened wall 309, the waste after secondary crushing only enters the coarse grinding cavity 310 through the spiral conveying piece 405, so that the waste after preliminary crushing needs to be subjected to secondary crushing through the crushing cavity 308 before coarse grinding, thereby avoiding that the waste which is not fully crushed directly enters the grinding link.

[0036] Below the thickened wall 309, the inner cavity of the processing cylinder 301 is configured as a coarse grinding chamber 310. Multiple sets of first grinding blocks 311 are fixedly installed on the inner wall of the processing cylinder 301 located in the coarse grinding chamber 310. A coarse roller 406 is disposed within the coarse grinding chamber 310, and the first grinding blocks 311 and second grinding blocks 407 are arranged alternately. The coarse grinding chamber 310 is used to accommodate the coarse roller 406, which, in conjunction with the first grinding blocks 311 on the inner wall, performs coarse grinding. The waste material from secondary crushing is subjected to alternating compression and grinding by the first grinding blocks 311 and the second grinding blocks 407, achieving coarse grinding and diameter reduction of the waste material.

[0037] Below the coarse grinding chamber 310 is a fine grinding chamber 312, located inside the bullet-shaped processing cylinder 301. Grinding balls 408 are disposed within the fine grinding chamber 312. The bullet-shaped fine grinding chamber 312 is used to accommodate the grinding balls 408, providing space for fine grinding of waste materials, so that the grinding balls 408 generate stronger impact force when rotating with the rotating shaft 402, thereby improving the fine grinding effect.

[0038] As attached Figure 6 As shown, the driven wheel 401 of the processing component 400 receives power from the driving wheel 306 transmitted through the belt 307, driving the rotating shaft 402 to rotate, causing all components inside the processing cylinder 301 to rotate accordingly. The rotating shaft 402 can drive the baffle 403, crushing roller 404, spiral conveyor 405, coarse roller 406, and grinding balls 408 to rotate synchronously, ensuring that the rotation speed of each processing component is consistent, realizing the continuous operation of crushing → conveying → grinding. The baffle 403 is located above the feed inlet 302 in the crushing chamber 308. Rotating with the rotating shaft 402, it can prevent waste from splashing out of the feed inlet 302 in the opposite direction, ensuring smooth feeding and preventing waste leakage. Multiple sets of crushing blades are fixed on the outer surface of the crushing roller 404. Through the high-speed rotation of the rotating shaft 402, the crushing blades can perform secondary cutting and crushing on the initially crushed waste entering the crushing chamber 308, further refining the small pieces of waste, reducing resistance for subsequent grinding, and improving the overall processing efficiency.

[0039] The spiral conveyor plate 405 rotates with the rotating shaft 402, conveying the crushed waste material downward to the coarse grinding chamber 310, directionally connecting the crushing and coarse grinding stages, and preventing the crushed waste material from accumulating in the crushing chamber 308.

[0040] The coarse roller 406 rotates with the rotating shaft 402 and alternately squeezes and grinds the first grinding block 311 on the inner wall of the coarse grinding chamber 310, further grinding the granular waste and removing the sharp edges of the waste surface.

[0041] The grinding balls 408 are fixed to the outer surface of the rotating shaft 402 and located in the fine grinding cavity 312. When the rotating shaft 402 rotates at high speed in the bullet-shaped fine grinding cavity 312, the grinding balls 408 collide with each other to finely grind the coarsely ground waste material, so as to finally prepare the waste recycled aggregate which can be used for concrete preparation and the like, greatly improving the recycling value of the waste material, reducing the waste landfill amount, and reducing environmental pollution.

[0042] The processing flow is as follows: the third driving member 305 transmits power to the driven wheel 401 of the processing assembly 400 through the driving wheel 306 and the belt 307, the driven wheel 401 drives the rotating shaft 402 to rotate, and the outer fixed baffles 403, the crushing knife rollers 404, the spiral conveying pieces 405, the coarse rollers 406 and the grinding balls 408 of the rotating shaft 402 rotate synchronously from top to bottom, so as to ensure that the rotating speeds of the components are consistent; the baffles 403 rotate above the feeding port 302 in the crushing cavity 308 along with the rotating shaft 402, which can block the waste material from being splashed back from the feeding port 302, so as to ensure smooth feeding; at the same time, the crushing knife rollers 404 rotate at high speed, and the multiple sets of crushing knives on the outer surface of the crushing knife rollers 404 perform secondary cutting and crushing on the preliminarily broken waste material entering the crushing cavity 308, so as to further refine the small waste material; the crushed waste material needs to enter the coarse grinding cavity 310, at this time, the spiral conveying pieces 405 rotate along with the rotating shaft 402, and the waste material at the bottom of the crushing cavity 308 is directionally conveyed downward to the coarse grinding cavity 310 through the spiral propulsion effect, so as to accurately connect the crushing and coarse grinding links, avoid the waste material from being accumulated in the crushing cavity 308 after crushing, and ensure that the processing flow is not interrupted; the coarse rollers 406 rotate in the coarse grinding cavity 310 along with the rotating shaft 402, and the first grinding blocks 311 fixed on the inner wall of the coarse grinding cavity 310 are interlaced with the second grinding blocks 407 on the outer surface of the coarse rollers 406; when the coarse rollers 406 rotate, the second grinding blocks 407 and the first grinding blocks 311 form an interlaced extrusion and grinding effect, so as to further grind the granular waste material conveyed by the spiral conveying pieces 405 and remove the corners on the surface of the waste material, so as to realize coarse grinding and size reduction of the waste material; the coarsely ground waste material enters the bullet-shaped fine grinding cavity 312, and the grinding balls 408 rotate at high speed in the cavity along with the rotating shaft 402; the bullet-shaped cavity can enhance the impact force of the grinding balls 408 when rotating, so that the grinding balls 408 finely grind the coarsely ground waste material through high-frequency collision, finally meet the high-fineness processing requirement, and prepare the waste recycled aggregate which can be used for concrete preparation.

[0043] For high-hardness block-shaped waste material, the double crushing rollers of the crushing assembly realize synchronous reverse rotation through the tooth groove belt transmission, can stably extrude and crush the large high-hardness waste material, and avoid single roller jamming; the thickened wall of the processing assembly can resist the impact when grinding high-hardness material, the coarse roller completes coarse grinding through extrusion and shearing, and the subsequent grinding balls realize fine grinding through centrifugal collision in the bullet-shaped cavity, and finally the product can be refined to meet the recycled aggregate standard;

[0044] For medium-hardness strip-shaped waste materials, the crushing assembly can first break the strip-shaped waste materials into short sections, and the multiple blades of the crushing knife roller can further cut them into small particles to prevent long strip-shaped materials from winding the conveying assembly; the auger blades of the conveying assembly can be smoothly conveyed to avoid jamming; and the grinding blocks of the coarse grinding cavity and the grinding balls of the fine grinding cavity can be surface polished to meet the subsequent recycling or filling requirements.

[0045] For low-hardness loose waste materials, the feeding box can directly receive loose materials, and the closed box body of the conveying assembly reduces dust raising; the crushing knife roller can slightly stir and disperse the caked materials, and the spiral conveying blades quickly feed them to the grinding cavity; the coarse roller and the grinding balls can realize fine grinding without high-strength operation, with high processing efficiency and a closed structure meeting environmental protection requirements.

[0046] As can be seen from the above, by integrating the whole process of preliminary crushing, automatic conveying and multi-stage grinding, manual waste material transfer is not required, manual intervention is greatly reduced, the processing capacity per unit time is improved, and the processing requirements of a large amount of waste materials on a civil engineering site are met. Meanwhile, the waste materials are subjected to preliminary volume reduction by the crushing roller, secondary cutting by the crushing knife roller, and graded grinding by the coarse roller and the grinding balls, so that the processing degree can be adjusted according to the recycling requirements, the fineness of the final product is uniform, and the final product can be directly used in concrete recycling, roadbed filling and other scenarios, so that the waste materials are reused, the landfill amount is reduced, the solid waste treatment cost is reduced, the new aggregate procurement cost is saved, and the comprehensive cost of the project is reduced in the long run.

[0047] Importantly, it should be noted that the configurations and arrangements of the present application shown in the various example embodiments are merely illustrative. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who refer to this disclosure will readily understand that many modifications are possible without materially departing from the novel teachings and advantages described in this application. Other substitutions, modifications, changes and omissions can be made in the design, operating conditions and arrangements of the example embodiments without departing from the scope of the present application. Therefore, the present application is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0048] Furthermore, in order to provide a brief description of the example embodiments, not all features of the actual embodiments (i.e., those irrelevant to the best mode of carrying out the present application currently considered or those irrelevant to the implementation of the present application) can be described.

[0049] It should be noted that the above examples are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application 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 application can be modified or equivalently replaced without departing from the spirit and scope of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A waste treatment device for civil engineering, characterized in that: It includes a crushing component (100) for preliminary crushing of waste materials. A conveying component (200) is provided at the lower end of the crushing component (100) for conveying the preliminary crushed waste materials to a cylindrical component (300) at the end of the conveying component (200). A processing component (400) is installed in the inner cavity of the cylindrical component (300) for further crushing and grinding the conveyed waste materials. The processing component (400) includes a driven wheel (401), a rotating shaft (402) is fixedly installed at the lower center of the driven wheel (401), and a baffle (403), a crushing roller (404), a spiral conveyor plate (405), a coarse roller (406) and grinding balls (408) are fixedly installed on the outer surface of the rotating shaft (402) from top to bottom; a plurality of crushing blades are fixedly installed on the outer surface of the crushing roller (404), and a plurality of second grinding blocks (407) are fixedly installed at equal intervals on the outer surface of the coarse roller (406).

2. The waste treatment device for civil engineering as described in claim 1, characterized in that: The crushing assembly (100) also includes a feeding box (101). A crushing roller (102) is movably installed in the middle of the inner cavity of the feeding box (101). There are two sets of crushing rollers (102), both of which are installed on the feeding box (101) through rotating rods. The extended ends of the rotating rods pass through the feeding box (101), and driven bevel gears (107) are fixedly installed at the passing ends. A fixing frame (103) is fixedly installed on the upper surface of the transmission assembly (200). A first driving member (104) is fixedly installed on one side of the fixing frame (103). A movable shaft (105) is fixedly installed at the output end of the first driving member (104). The movable shaft (105) is located between the inner sides of the fixing member. A driving bevel gear (106) is fixedly installed on the outer surface of the movable shaft (105). There are two sets of driving bevel gears (106) arranged opposite to each other. The driving bevel gears (106) mesh with the driven bevel gears (107) respectively.

3. The waste treatment device for civil engineering as described in claim 2, characterized in that: The transmission assembly (200) includes a transmission box (201) fixedly installed at the lower opening of the feeding box (101). A second driving member (202) is installed on the outside of the transmission box (201). A rotating roller (203) is fixedly installed at the output end of the second driving member (202) and in the inner cavity of the transmission box (201). An auger plate (204) is fixedly provided on the outer surface of the rotating roller (203). A discharge port (205) is opened at the bottom of the tail end of the transmission box (201). A guide groove (206) is fixedly installed at the discharge port (205).

4. The waste treatment device for civil engineering as described in claim 3, characterized in that: The cylinder assembly (300) further includes a processing cylinder (301) disposed at the end of the transmission box (201). A feed inlet (302) is provided on one side of the outer surface of the processing cylinder (301). The lower end of the processing cylinder (301) is configured as a bullet shape, and a discharge outlet (303) is provided at its bottom. A support platform (304) is fixedly installed on the other side of the outer surface of the processing cylinder (301). A third driving component (305) is installed on the support platform (304). A drive wheel (306) is installed at the output end of the third driving component (305). A belt (307) is provided on the drive wheel (306).

5. The waste treatment device for civil engineering as described in claim 4, characterized in that: The feed inlet (302) and the discharge outlet (205) are connected by a guide groove (206).

6. The waste treatment device for civil engineering as described in claim 4, characterized in that: The upper part of the inner cavity of the processing cylinder (301) is configured as a crushing chamber (308), the crushing roller (404) is disposed in the crushing chamber (308), the feed inlet (302) is directly connected to the crushing chamber (308), and the baffle (403) is disposed above the feed inlet (302) in the crushing chamber (308).

7. The waste treatment device for civil engineering as described in claim 6, characterized in that: The inner cavity of the processing cylinder (301) and the inner wall below the crushing chamber (308) are fixedly provided with a thickened wall (309), and the spiral conveyor plate (405) is disposed in the inner cavity of the processing cylinder (301) located at the thickened wall (309).

8. The waste treatment device for civil engineering as described in claim 7, characterized in that: Below the thickened wall (309), the inner cavity of the processing cylinder (301) is set as a coarse grinding chamber (310). Multiple sets of first grinding blocks (311) are fixedly installed on the inner wall of the processing cylinder (301) located in the coarse grinding chamber (310). The coarse roller (406) is set in the coarse grinding chamber (310). The first grinding blocks (311) and the second grinding blocks (407) are arranged alternately.

9. The waste treatment device for civil engineering as described in claim 8, characterized in that: Below the coarse grinding chamber (310) is a fine grinding chamber (312), which is located inside the bullet-shaped processing cylinder (301), and the grinding ball (408) is disposed inside the fine grinding chamber (312).

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