A silt sorting device for construction

Abstract

The application relates to the field of silt sorting, and particularly discloses a silt sorting device for building construction, which comprises a feeding box, a communicating pipe, a sorting box and a linkage mechanism connected in sequence. A conveying auger with an upwardly inclined conveying direction is rotationally arranged in the feeding box. A slope surface is arranged below the conveying auger. A spraying mechanism is arranged in the feeding box. Two silt squeezing rollers are rotationally arranged in the communicating pipe. A gap for silt to pass through is arranged between the two silt squeezing rollers. A filter cartridge for separating sand and silt water is rotationally arranged in the sorting box. The linkage mechanism is used for driving the two silt squeezing rollers to rotate towards each other and driving the conveying auger and the filter cartridge to synchronously rotate. The silt sorting device can realize the sorting of large-particle sundries, soil and sand with different particle sizes through a linkage driving system, has high sorting efficiency and is low in energy consumption.

Description

Technical Field

[0001] This application relates to the field of sediment separation, and in particular to a sediment separation device for construction. Background Technology

[0002] Construction processes typically generate large amounts of construction silt and sand. Direct discharge of this silt without treatment will cause environmental pollution. Current silt and sand treatment methods generally involve natural drying in designated areas or long-term natural sedimentation in sedimentation tanks. Both methods have long processing times and require large treatment sites. Alternatively, silt and sand separation equipment can be used to treat the silt and sand.

[0003] In the process of sediment treatment, it is necessary not only to separate large particles of debris from sediment, but also to separate sand from soil. Furthermore, it is necessary to screen sand of different particle sizes. To achieve the above separation effect, the equipment used usually contains multiple sets of drive mechanisms, which are complex in structure and have low sorting efficiency. Summary of the Invention

[0004] In order to improve the problem of complex structure of mud and sand separation equipment in related technologies, this application provides a mud and sand separation device for construction.

[0005] The sand and mud sorting device for construction use provided in this application adopts the following technical solution:

[0006] A sediment sorting device for construction use includes:

[0007] The feed box contains a conveying auger that is rotatably mounted and tilted upwards. A ramp is located below the auger, with the ramp having the same inclination as the auger and a gap between them for mud and sand to pass through. The feed box also includes a spraying mechanism for spraying water onto the auger. A slag outlet is located at the output end of the auger, and a connecting pipe is connected to the side of the feed box away from the slag outlet.

[0008] A drive shaft extends horizontally through the connecting pipe, and a drive component for driving the drive shaft to rotate is provided outside the connecting pipe;

[0009] The sand squeezing roller assembly includes a first sand squeezing roller and a second sand squeezing roller rotatably disposed in the connecting pipe. The first sand squeezing roller is coaxially fixed to the drive shaft, and a gap is provided between the first sand squeezing roller and the second sand squeezing roller for mud and sand to pass through.

[0010] A sorting box is connected to the outlet end of the connecting pipe, and a filter cylinder for separating sand and muddy water is rotatably installed in the sorting box.

[0011] The linkage mechanism is used to drive the first and second sand-extruding rollers to rotate in opposite directions as the drive shaft rotates, and to drive the conveying auger and the filter cylinder to rotate synchronously.

[0012] Furthermore, the linkage mechanism includes a first transmission component, a second transmission component, and a third transmission component. The first transmission component is used to drive the first extrusion roller and the second extrusion roller to rotate in opposite directions as the drive shaft rotates. The second transmission component is used to drive the conveying auger to rotate as the drive shaft rotates. The third transmission component is used to drive the filter cartridge to rotate as the drive shaft rotates.

[0013] The mud and sand mixture to be sorted enters the feed box. While the conveying auger rotates, the spraying mechanism sprays water onto the conveying auger to wash the mud and sand mixture. During the washing process, small particles such as mud and sand mix with water and then slide down the slope through the gap between the conveying auger and the slope into the connecting pipe. Large particles cannot pass through the gap between the conveying auger and the slope and are conveyed upward by the conveying auger and discharged from the slag outlet, thus separating mud and sand from large particles and reducing the possibility of blockage caused by large particles in subsequent processes.

[0014] After the sand enters the connecting pipe, it is squeezed by the sand-squeezing roller group. The sand-squeezing roller group rubs against the sand, which removes the soil attached to the surface of the sand, thus separating the sand from the soil. The sand and muddy water enter the sorting box, where the sand and muddy water are separated by the centrifugal force of the rotating filter cylinder.

[0015] Driven by the linkage mechanism, the sand squeezing roller group, conveying auger and filter cylinder can be driven to rotate simultaneously through the drive shaft, realizing the separation of soil, sand and large particles of debris. The sorting efficiency is high and the energy consumption is low.

[0016] Furthermore, the first transmission assembly includes a drive gear coaxially fixed to the drive shaft and a driven gear coaxially fixed to the second extrusion roller, wherein the drive gear meshes with the driven gear.

[0017] The drive shaft drives the drive gear to rotate, and the drive gear drives the driven gear to rotate. The driven gear rotates in the opposite direction to the drive gear, so that the first and second sand-extruding rollers can rotate in opposite directions.

[0018] Furthermore, a fixed frame is fixedly installed outside the feed box, and a universal joint is rotatably installed on the fixed frame. One end of the universal joint is coaxially fixed to the conveying auger, and the other end is coaxially fixed to a linkage shaft. The second transmission component is used to drive the linkage shaft to rotate synchronously with the drive shaft.

[0019] When the drive shaft rotates, the second transmission component drives the linkage shaft to rotate synchronously with the drive shaft. The linkage shaft drives the universal joint to rotate, which in turn drives the conveyor auger to rotate.

[0020] Furthermore, the second transmission assembly includes a driving pulley coaxially fixed to the drive shaft and a driven pulley coaxially fixed to the linkage shaft, with a synchronous belt tensioned and covering the driving pulley and the driven pulley.

[0021] The drive shaft drives the driving pulley to rotate. Under the transmission of the synchronous belt and the driven pulley, the driven pulley rotates, thereby driving the linkage shaft to rotate.

[0022] Furthermore, an external gear ring is coaxially fixed to the outside of the filter cartridge, and the external gear ring meshes with a drive gear. The third transmission component is used to drive the drive gear to rotate as the drive shaft rotates.

[0023] The third transmission component rotates with the drive shaft, which in turn drives the drive gear to rotate. The drive gear then drives the external gear ring to rotate, thereby driving the filter cartridge to rotate.

[0024] Furthermore, the third transmission assembly includes a first bevel gear coaxially fixed to the drive shaft and a second bevel gear coaxially fixed to the drive gear, wherein the first bevel gear meshes with the second bevel gear.

[0025] When the drive shaft rotates, the first bevel gear rotates, which drives the second bevel gear to rotate, thereby driving the drive gear to rotate.

[0026] Furthermore, the filter cartridge includes a coarse filter cartridge, a medium filter cartridge, and a fine filter cartridge arranged coaxially from the inside to the outside. Filter holes are provided on the side walls of the coarse filter cartridge, the medium filter cartridge, and the fine filter cartridge. The pore diameter of the filter holes on the coarse filter cartridge, the medium filter cartridge, and the fine filter cartridge decreases sequentially.

[0027] When the filter cylinder rotates, under the action of centrifugal force, the mud and water are thrown out of the filter cylinder through the filter holes and fall to the bottom of the sorting box. The coarse filter cylinder, medium filter cylinder and fine filter cylinder respectively intercept sand of large, medium and small particle sizes. In this way, the mud and water can be separated from the sand, and sand of different particle sizes can be screened at the same time.

[0028] Furthermore, a stirring rod is provided in the coarse filter cylinder, the medium filter cylinder, and the fine filter cylinder.

[0029] During the rotation of the coarse, medium, and fine filter cylinders, the stirring rod agitates the sediment, which can improve the sediment settling phenomenon and help improve the sorting efficiency.

[0030] Furthermore, the spraying mechanism includes a spray pipe connected to a water source, the spray pipe being located above the output end of the conveying auger.

[0031] This helps to extend the distance the water flows along the slope, allowing the water to thoroughly wash the mud and sand on the slope, thereby improving the separation effect of mud and sand from large particles.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. By setting up a linkage mechanism, one drive shaft can simultaneously drive the sand squeezing roller group, the conveying auger and the filter cylinder to rotate, realizing the separation of large particles of debris, soil and sand of different particle sizes. The sorting efficiency is high and the energy consumption is low.

[0034] 2. By setting up a conveying auger, a ramp, and a spraying mechanism, large particles of debris in the mud and sand are effectively separated, reducing the possibility of blockage caused by large particles of debris in subsequent processes;

[0035] 3. By setting up a sand-squeezing roller assembly, the soil adhering to the surface of the sand can be effectively removed;

[0036] 4. By setting up multiple filter cylinders with different filter hole diameters, it is possible to screen sand of different particle sizes. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0038] Figure 2 This is a partial cross-sectional structural diagram of an embodiment of this application;

[0039] Figure 3 This is a schematic diagram used in the embodiments of this application to mainly show the internal structure of the feed box;

[0040] Figure 4 This is a schematic diagram used in the embodiments of this application to mainly illustrate the internal structure of the sorting box;

[0041] Figure 5 yes Figure 4 Enlarged schematic diagram of part B;

[0042] Figure 6 yes Figure 2 An enlarged schematic diagram of part A in the middle;

[0043] Figure 7 This is a schematic diagram used in the embodiments of this application to mainly illustrate the internal structure of the filter cartridge.

[0044] Attached reference numerals: 1-Sorting box; 2-Feed box; 3-Feed hopper; 4-Connecting pipe; 5-Conveying auger; 6-Sloping surface; 7-Slag discharge pipe; 8-Spray pipe; 9-Water supply pipe; 10-First bearing; 11-Coarse filter cartridge; 12-Medium filter cartridge; 13-Fine filter cartridge; 14-Horizontal bar; 15-First stirring rod; 16-Second stirring rod; 17-Third stirring rod; 18-Sand discharge pipe; 19-Servo motor; 20-Driver 21-Driving shaft; 22-First extrusion roller; 23-Driven gear; 24-Driven shaft; 25-Second extrusion roller; 26-First bevel gear; 27-Second bevel gear; 28-Vertical shaft; 29-Fixed seat; 30-Drive gear; 31-External gear ring; 32-Drive pulley; 33-Synchronous belt; 34-Driven pulley; 35-Linkage shaft; 36-Universal joint; 37-Second bearing; 38-Fixed frame. Detailed Implementation

[0045] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0046] This application discloses a mud and sand sorting device for construction. (Refer to...) Figure 1 and Figure 2 The mud and sand sorting device for construction includes a feed box 2, a connecting pipe 4, and a sorting box 1 connected from top to bottom.

[0047] Reference Figure 2 and Figure 3 A feed hopper 3 is located at the top center of the feed box 2. A conveying auger 5 with an upward-sloping conveying direction is rotatably installed in the feed box 2. A slag outlet is provided at the output end of the conveying auger 5 in the feed box 2, and a slag outlet is connected to a slag outlet pipe 7. A connecting pipe 4 is connected to the side of the feed box 2 away from the slag outlet and located below the lower end of the conveying auger 5.

[0048] Reference Figure 3 The feed box 2 is equipped with a spraying mechanism, which includes a spraying pipe 8 connected to the water supply pipe 9. The spraying pipe 8 is located above the output end of the conveying auger 5 and is equipped with multiple nozzles for spraying water onto the conveying auger 5.

[0049] Reference Figure 3 A ramp 6 is fixedly installed in the feed box 2 below the conveying auger 5. The cross-sectional profile of the ramp 6 is arc-shaped, and the inclination of the ramp 6 is the same as that of the conveying auger 5, so that the ramp 6 and the bottom profile of the conveying auger 5 are matched. Furthermore, a gap is provided between the ramp 6 and the conveying auger 5 to allow mud and sand to pass through.

[0050] Reference Figure 1A drive shaft 20 is rotatably mounted in the connecting pipe 4, extending horizontally through the connecting pipe 4. A drive component, specifically a servo motor 19, is located outside the connecting pipe 4 to drive the drive shaft 20. (Refer to...) Figure 4 and Figure 5 The connecting pipe 4 is equipped with a sand squeezing roller group. Specifically, the sand squeezing roller group includes a first sand squeezing roller 21 and a second sand squeezing roller 25 that are rotatably arranged. The first sand squeezing roller 21 and the second sand squeezing roller 25 are arranged side by side and a gap is provided between them for mud and sand to pass through. The first sand squeezing roller 21 is coaxially fixed to the drive shaft 20.

[0051] Reference Figure 2 The sorting box 1 is equipped with a filter cylinder for separating sand and muddy water. The filter cylinder is open at the top, and the connecting pipe 4 is located above the open end of the filter cylinder.

[0052] Furthermore, refer to Figure 2 A linkage mechanism is provided outside the feed box 2. The linkage mechanism includes a first transmission component, a second transmission component and a third transmission component. The first transmission component is used to drive the first extrusion roller 21 and the second extrusion roller 25 to rotate in opposite directions as the drive shaft 20 rotates. The second transmission component is used to drive the conveying auger 5 to rotate as the drive shaft 20 rotates. The third transmission component is used to drive the filter cartridge to rotate as the drive shaft 20 rotates.

[0053] The mud and sand mixture to be sorted enters the feed box 2 through the feed hopper 3. While the conveying auger 5 rotates, the spraying mechanism sprays water onto the conveying auger 5 to wash the mud and sand mixture. During the washing process, small particles such as mud and sand mix with water and then slide down the slope 6 through the gap between the conveying auger 5 and the slope 6 into the connecting pipe 4. Large particles cannot pass through the gap between the conveying auger 5 and the slope 6 and are conveyed upward by the conveying auger 5 and discharged from the slag outlet pipe 7, thus achieving the separation of mud and sand from large particles and reducing the possibility of blockage caused by large particles in subsequent processes.

[0054] After the silt enters the connecting pipe 4, it is squeezed by the sand squeezing roller group. The sand squeezing roller group rubs against the silt, which removes the soil attached to the surface of the sand, thus separating the sand from the soil. The sand and muddy water enter the sorting box 1, where the sand and muddy water are separated under the centrifugal force of the rotating filter cylinder.

[0055] Driven by the linkage mechanism, the sand squeezing roller group, the conveying auger 5 and the filter cylinder can be driven to rotate simultaneously through the drive shaft 20, so as to separate soil, sand and large particles of debris. The sorting efficiency is high and the energy consumption is low.

[0056] In order to drive the first extrusion roller 21 and the second extrusion roller 25 to rotate in opposite directions, refer to Figure 5A driven shaft 24 is rotatably mounted on the side wall of the connecting pipe 4, and the driven shaft 24 is coaxially fixed to the second extrusion roller 25. The first transmission assembly includes a driving gear 22 coaxially fixed to the drive shaft 20 and a driven gear 23 coaxially fixed to the driven shaft 24. The driving gear 22 and the driven gear 23 mesh with each other and have different numbers of teeth.

[0057] The servo motor 19 drives the drive shaft 20 to rotate, which in turn drives the drive gear 22 to rotate. The drive gear 22 drives the driven gear 23 to rotate, and the driven gear 23 rotates in the opposite direction to the drive gear 22. This allows the first sand-squeezing roller 21 and the second sand-squeezing roller 25 to rotate in opposite directions. At the same time, the first sand-squeezing roller 21 and the second sand-squeezing roller 25 rotate at different speeds, thereby removing the mud attached to the surface of the sand through friction.

[0058] To improve the friction effect of the first sand-extruding roller 21 and the second sand-extruding roller 25 on the mud and sand, a frosted layer can be provided on the periphery of the first sand-extruding roller 21 and the second sand-extruding roller 25.

[0059] The distance between the arc-shaped circumference of the first sand-extruding roller 21 and the second sand-extruding roller 25 and the inner wall of the connecting pipe 4 on the same side should be as small as possible, so as to avoid sand and mud from leaking down from the gap between the sand-extruding roller group and the inner wall of the connecting pipe 4, thereby improving the friction efficiency of the sand-extruding roller group against sand and mud.

[0060] In order to drive the conveyor auger 5 to rotate along with the drive shaft 20, refer to Figure 3 and Figure 6 A fixed frame 38 is fixedly installed outside the feed box 2. A universal joint 36 is rotatably mounted on the fixed frame 38. One end of the universal joint 36 is coaxially fixed to the conveying auger 5, and the other end is coaxially fixed to a linkage shaft 35. The linkage shaft 35 is rotatably mounted on the fixed frame 38 via a second bearing 37. The linkage shaft 35 is parallel to the drive shaft 20, and the second transmission assembly is used to drive the linkage shaft 35 to rotate synchronously with the drive shaft 20. Because the conveying auger 5 is inclined, the rotation axis of the conveying auger 5 is not collinear with the rotation axis of the linkage shaft 35.

[0061] Furthermore, refer to Figure 3 and Figure 6 The second transmission assembly includes a drive pulley 32 coaxially fixed to the drive shaft 20 and a driven pulley 34 coaxially fixed to the linkage shaft 35, with a synchronous belt 33 tensioned and wrapped between the drive pulley 32 and the driven pulley 34.

[0062] Driven by the drive shaft 20, the drive pulley 32 rotates, which in turn drives the driven pulley 34 to rotate under the transmission of the synchronous belt 33 and the driven pulley 34, thereby driving the linkage shaft 35 to rotate, which in turn drives the conveyor auger 5 to rotate under the transmission of the universal joint 36.

[0063] Reference Figure 4 and Figure 7The filter cartridge includes a coarse filter cartridge 11, a medium filter cartridge 12, and a fine filter cartridge 13 arranged coaxially from the inside to the outside. The connecting pipe 4 is located above the open end of the coarse filter cartridge 11. Filter holes are provided on the side walls of the coarse filter cartridge 11, the medium filter cartridge 12, and the fine filter cartridge 13, with the hole diameter decreasing sequentially from the inside to the outside. Sand outlet pipes 18 are connected to the bottom of the coarse filter cartridge 11, the medium filter cartridge 12, and the fine filter cartridge 13, and valves are installed on the sand outlet pipes 18.

[0064] The muddy water carrying sand falls into the coarse filter cylinder 11 through the connecting pipe 4. The coarse filter cylinder 11, the medium filter cylinder 12, and the fine filter cylinder 13 rotate simultaneously. Under the action of centrifugal force, the muddy water passes through the filter holes on the coarse filter cylinder 11, the medium filter cylinder 12, and the fine filter cylinder 13 in sequence. After being thrown out, the muddy water falls to the bottom of the sorting box 1. The coarse filter cylinder 11, the medium filter cylinder 12, and the fine filter cylinder 13 respectively intercept sand of large, medium, and small particle sizes. In this way, the muddy water and sand can be separated, and sand of different particle sizes can be screened at the same time.

[0065] In order to drive the filter cartridge to rotate along with the drive shaft 20, refer to Figure 4 and Figure 6 Both the fine filter cartridge 13 and the sorting box 1 are cylindrical. The fine filter cartridge 13 is rotatably connected to the inner wall of the sorting box 1 via the first bearing 10. An external gear ring 31 is coaxially fixed to the outer periphery of the fine filter cartridge 13, and the external gear ring 31 meshes with a drive gear 30. A through hole for accommodating the drive gear 30 is provided on the side wall of the sorting box 1. The third transmission assembly is used to drive the drive gear 30 to rotate as the drive shaft 20 rotates.

[0066] Furthermore, refer to Figure 4 and Figure 6 A fixed base 29 is fixedly installed on the outer wall of the sorting box 1. A vertical shaft 28 is rotatably installed on the fixed base 29 and is coaxially fixed to the drive gear 30. The third transmission assembly includes a first bevel gear 26 coaxially fixed to the drive shaft 20 and a second bevel gear 27 coaxially fixed to the vertical shaft 28. The first bevel gear 26 and the second bevel gear 27 mesh with each other.

[0067] The drive shaft 20 drives the first bevel gear 26 to rotate, the first bevel gear 26 drives the second bevel gear 27 to rotate, thereby driving the drive gear 30 to rotate, the drive gear 30 drives the outer gear ring 31 to rotate, thereby driving the fine filter cartridge 13 to rotate, thus realizing the simultaneous rotation of the coarse filter cartridge 11, the middle filter cartridge 12 and the fine filter cartridge 13.

[0068] To improve the phenomenon of sediment settling at the bottom during the screening process, refer to Figure 4 and Figure 7The coarse filter cylinder 11, the medium filter cylinder 12, and the fine filter cylinder 13 are respectively equipped with a first stirring rod 15, a second stirring rod 16, and a third stirring rod 17. Specifically, a horizontal bar 14 is fixedly installed inside the connecting pipe 4, and the top end of the first stirring rod 15 is fixed to the horizontal bar 14; the top ends of the second stirring rod 16 and the third stirring rod 17 are both fixed to the inner top wall of the sorting box 1. The bottom end of each stirring rod extends vertically to the bottom of the corresponding filter cylinder, and a cross-shaped stirring head is fixedly connected to the bottom end of each stirring rod.

[0069] When the coarse filter cylinder 11, the medium filter cylinder 12, and the fine filter cylinder 13 rotate, the stirring rod agitates the mud and sand in the filter cylinder, which can improve the phenomenon of mud and sand settling to the bottom and help improve the sorting efficiency.

[0070] The implementation principle of the mud and sand sorting device for construction in this application embodiment is as follows: The mud and sand mixture to be sorted enters the feed box 2 through the feed hopper 3. While the conveying auger 5 rotates, the spray pipe 8 sprays water onto the conveying auger 5 to wash the mud and sand mixture. During the washing process, small particles such as mud and sand mix with water, and then slide down the slope 6 through the gap between the conveying auger 5 and the slope 6 into the connecting pipe 4. Large particles cannot pass through the gap between the conveying auger 5 and the slope 6, are conveyed upward by the conveying auger 5 and discharged from the slag outlet pipe 7, thereby achieving the separation of mud and sand from large particles and reducing the possibility of blockage caused by large particles in subsequent processes.

[0071] After the silt enters the connecting pipe 4, it is squeezed by the sand squeezing roller group. The sand squeezing roller group rubs against the silt, which can remove the soil attached to the surface of the sand and realize the separation of sand and soil. The sand and muddy water enter the sorting box 1. Under the action of centrifugal force of the rotation of the coarse filter cylinder 11, the medium filter cylinder 12 and the fine filter cylinder 13, the sand and muddy water are separated, and sand of different particle sizes is screened.

[0072] The structure of this application is compact. Under the transmission of the linkage mechanism, the drive shaft 20 is driven to rotate by a servo motor 19, which can simultaneously drive the sand squeezing roller group, the conveying auger 5 and multiple filter cylinders to rotate, so as to achieve the separation of large particles of debris, soil and sand of different particle sizes. The sorting efficiency is high and the energy consumption is low.

[0073] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A mud and sand sorting device for construction, characterized in that: include: The feed box contains a conveying auger that is rotatably mounted and tilted upwards. A ramp is located below the auger, with the ramp having the same inclination as the auger and a gap between them for mud and sand to pass through. The feed box also includes a spraying mechanism for spraying water onto the auger. A slag outlet is located at the output end of the auger, and a connecting pipe is connected to the side of the feed box away from the slag outlet. A drive shaft extends horizontally through the connecting pipe, and a drive component for driving the drive shaft to rotate is provided outside the connecting pipe; The sand squeezing roller assembly includes a first sand squeezing roller and a second sand squeezing roller rotatably disposed in the connecting pipe. The first sand squeezing roller is coaxially fixed to the drive shaft, and a gap is provided between the first sand squeezing roller and the second sand squeezing roller for mud and sand to pass through. A sorting box is connected to the outlet end of the connecting pipe. A filter cylinder for separating sand and muddy water is rotatably installed in the sorting box. The filter cylinder includes a coarse filter cylinder, a medium filter cylinder, and a fine filter cylinder arranged coaxially from the inside out. Filter holes are provided on the side walls of the coarse filter cylinder, the medium filter cylinder, and the fine filter cylinder, with the hole diameter decreasing sequentially from the coarse filter cylinder to the medium filter cylinder and the fine filter cylinder. An agitator is provided in each of the coarse filter cylinder, the medium filter cylinder, and the fine filter cylinder. The linkage mechanism is used to drive the first and second sand-extruding rollers to rotate in opposite directions as the drive shaft rotates, and to drive the conveying auger and the filter cylinder to rotate synchronously.

2. The sand and mud sorting device for construction as described in claim 1, characterized in that: The linkage mechanism includes a first transmission component, a second transmission component, and a third transmission component. The first transmission component is used to drive the first extrusion roller and the second extrusion roller to rotate in opposite directions as the drive shaft rotates. The second transmission component is used to drive the conveying auger to rotate as the drive shaft rotates. The third transmission component is used to drive the filter cartridge to rotate as the drive shaft rotates.

3. The mud and sand sorting device for construction as described in claim 2, characterized in that: The first transmission assembly includes a drive gear coaxially fixed to the drive shaft and a driven gear coaxially fixed to the second extrusion roller. The drive gear and the driven gear mesh with each other and have different numbers of teeth.

4. The mud and sand sorting device for construction as described in claim 2, characterized in that: A fixed frame is fixedly installed outside the feed box, and a universal joint is rotatably installed on the fixed frame. One end of the universal joint is coaxially fixed to the conveying auger, and the other end is coaxially fixed to a linkage shaft. The second transmission component is used to drive the linkage shaft to rotate synchronously with the drive shaft.

5. A mud and sand sorting device for construction according to claim 4, characterized in that: The second transmission assembly includes a driving pulley coaxially fixed to the drive shaft and a driven pulley coaxially fixed to the linkage shaft, with a synchronous belt tensioned and covering the driving pulley and the driven pulley.

6. A mud and sand sorting device for construction according to claim 2, characterized in that: An external gear ring is coaxially fixed to the outside of the filter cartridge, and the external gear ring meshes with a drive gear. The third transmission component is used to drive the drive gear to rotate as the drive shaft rotates.

7. A mud and sand sorting device for construction according to claim 6, characterized in that: The third transmission component includes a first bevel gear coaxially fixed to the drive shaft and a second bevel gear coaxially fixed to the drive gear, wherein the first bevel gear meshes with the second bevel gear.

8. A mud and sand sorting device for construction according to claim 1, characterized in that: The spraying mechanism includes a spray pipe connected to a water source, and the spray pipe is located above the output end of the conveying auger.

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