A multi-stage wastewater treatment device for construction sites

Abstract

This invention discloses a multi-stage treatment device for construction site wastewater, relating to the field of construction site wastewater treatment technology. It includes a sedimentation tank for primary sedimentation of muddy water; a flocculation tank connected to the output end of the sedimentation tank for flocculation and sedimentation of the muddy water; a centrifugal unit comprising a base, an outer cylinder, and an inner filter cartridge. The base is mounted on the top of the sedimentation tank, and the top of the base is hinged to an inclined outer cylinder. The bottom of the outer cylinder has a discharge hole, and the outer end face of the outer cylinder has an assembly ring. The inner filter cartridge is coaxially rotatably mounted inside the outer cylinder, and the end of the inner filter cartridge extends outward from the assembly hole; a mobile storage unit comprising a mobile storage box, a hose, a material pipe, an end plate, a drive assembly, and a sludge scraping assembly. This invention can quickly collect construction site muddy water and can quickly drain it for centrifugal separation and multiple sedimentation treatments.

Description

Technical Field

[0001] This invention relates to the field of construction site wastewater treatment technology, specifically a multi-stage treatment device for construction site wastewater. Background Technology

[0002] Slurry wastewater is a common source of pollution during construction projects, especially after rainfall, when large areas of mud-water mixture are easily formed at construction sites. This type of wastewater is characterized by high solid-liquid mixing and high viscosity. If it is not treated in time, it will directly affect the operation of subsequent construction machinery and pose an environmental pollution risk.

[0003] Existing mud wastewater treatment technologies have the following main drawbacks: In the collection stage, traditional manual methods use wheelbarrows and shovels for transfer. However, due to the low fluidity of mud, the processing capacity per worker per hour is limited, and workers must move back and forth in muddy environments, resulting in high labor intensity and low efficiency. Although some construction sites have attempted to use pumps for mechanized extraction, the poor fluidity of mud wastewater necessitates manual hand-held tools to continuously move the surrounding mud to the suction port. After the wheelbarrow is full, it is poured into the sedimentation tank. In the sedimentation process, centrifuges are used to separate mud and water, but the through holes in the centrifuges are prone to clogging. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-stage treatment device for construction site wastewater to solve the problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-stage treatment device for construction site wastewater, comprising: a sedimentation tank for primary sedimentation of muddy water;

[0006] The flocculation box is connected to the output end of the sedimentation box and is used to flocculate and settle mud and water.

[0007] The centrifugal unit includes a base, an outer cylinder, and an inner filter cylinder. The base is installed on the top of the sedimentation tank. The top of the base is hinged to an inclined outer cylinder. The bottom of the outer cylinder has a discharge hole, and the outer end face of the outer cylinder has an assembly ring. The inner filter cylinder is coaxially rotatably installed inside the outer cylinder. The end of the inner filter cylinder extends outward from the assembly hole. A drainage chamber is left between the inner filter cylinder and the outer cylinder. The two ends of the inner filter cylinder are open structures. The outer end face of the inner filter cylinder has a toothed ring, and the inner end is equipped with a pusher assembly. The inner filter cylinder is used for centrifugal rotation to separate mud and water, and the pusher assembly is used to push out mud lumps in the inner filter cylinder.

[0008] The mobile storage unit includes a mobile storage box, a hose, a feed pipe, an end plate, a drive assembly, and a scraper assembly. A filter plate is installed at the top of the mobile storage box. An inlet pump is installed at the top of the outer wall of the mobile storage box, and a drain pump is installed at the bottom of the outer wall. The inlet and drain pumps are connected in parallel to the hose. The end of the hose is connected to the feed pipe, which is installed at the center of the end plate. The drive assembly is installed on the surface of the end plate, and the scraper assembly is symmetrically installed on the bottom surface of the end plate. The feed pipe passes through the end plate and extends between the two sets of scraper assemblies. The mobile storage unit includes the following operating modes:

[0009] In the sludge suction mode, two sets of sludge scraping components are vertically distributed with the material pipe. The drive component drives the two sets of sludge scraping components to rotate synchronously in opposite directions to gather the sludge inward to the material pipe. The material pipe then sucks the sludge and water into the mobile temporary storage box.

[0010] In the sludge discharge mode, two sets of sludge scraping components are distributed parallel to the material pipe and unlocked from the drive component. The end plate is connected to the assembly ring. The sludge scraping components are inserted into the inner filter cylinder. The drive component drives the inner filter cylinder to rotate at two points. The material pipe is pulled out and the mud and water in the temporary storage box are moved to the inner filter cylinder. The sludge scraping components scrape off the sludge attached to the inner wall of the inner filter cylinder.

[0011] Furthermore, the bottom surface of the end plate is provided with a first positioning hole arranged in a ring array, and a second positioning hole is provided inside the assembly ring. The first positioning hole and the second positioning hole are positioned by a pin or bolt.

[0012] Furthermore, the feeding assembly includes a fixed frame, and the fixed frame is symmetrically provided with first drive rods inside. The output ends of the two sets of first drive rods are connected to push plates, and the push plates are slidably embedded in the inner filter cylinder.

[0013] Furthermore, the sludge scraping assembly includes a hanging plate, with side clamps vertically and symmetrically arranged on the bottom side wall of the hanging plate. A rotating block is rotatably installed between the two sets of side clamps. The rotating block is positioned with the side clamps by a first locking bolt. A first rotating shaft is rotatably embedded inside the rotating block. The outer wall of the first rotating shaft is provided with a first conical tooth. The first conical tooth is located at the bottom of the side clamps. A scraper is provided on the outer wall of the first rotating shaft. The top end of the first rotating shaft is fixed inside the rotating block by a third locking bolt.

[0014] Furthermore, the drive assembly includes a main drive motor, a first driven component, a transfer component, and a second driven component. The sidewall of the main drive motor is mounted on the surface of the end plate via a side bracket. The first and second driven components are symmetrically arranged on both sides of the material pipe. The main drive motor is vertically arranged and its bottom end is connected to the top end of the first driven component. The bottom end of the first driven component is engaged with a set of scraping components, and the bottom end of the second driven component is engaged with another set of scraping components. The top ends of the first and second driven components are connected by a transfer component. The first driven component, the second driven component, and the transfer component are arranged in a triangular pattern.

[0015] Furthermore, the first driven component and the second driven component adopt the same structure. The first driven component includes a first gear, a second rotating shaft and a second bevel tooth. The second rotating shaft is vertically rotatable inside the end plate. The top end of the second rotating shaft is connected to the main drive motor. The bottom outer wall of the second rotating shaft is provided with the first gear. The bottom end of the second rotating shaft is vertically provided with the second bevel tooth. The first gear is located above the second bevel tooth.

[0016] In suction mode, the second bevel tooth meshes perpendicularly with the first bevel tooth;

[0017] In the sludge discharge mode, the first rotating shaft and the second rotating shaft are located on the same central axis, the first bevel tooth and the second bevel tooth are disengaged, and the first gear is engaged and placed on the inner wall of the gear ring.

[0018] Furthermore, the transfer component includes a first pulley, a third shaft, a second pulley, and a steering switching component. The first pulley is located on the outer wall of the second shaft, and the third shaft is rotatably mounted on the surface of the end plate. The second pulley is located at the top of the second driven component, and the third pulley and a second gear are located at the bottom of the outer wall of the third shaft. The second gear is located above the third pulley, and a mounting plate is located at the top of the third shaft. The first pulley and the third pulley are connected by a first transmission belt. One side of the second gear meshes with the third gear, which is mounted on a fourth shaft. The distance between the second gear and the second pulley is the same as the distance between the third gear and the second pulley. The second pulley is connected to the steering switching component via a second transmission belt.

[0019] In suction mode, the steering switching component is mounted on the third gear, causing the first driven component and the second driven component to rotate synchronously in opposite directions;

[0020] In sludge removal mode, the steering switching component is mounted on the assembly plate, so that the first driven component and the second driven component rotate synchronously in the same direction.

[0021] Furthermore, the steering switching component includes a plug, and slots are provided at the center of the third and fourth rotating shafts. A screw hole is provided on the bottom surface of the slot. The bottom end of the plug is a polygonal prism. The plug is inserted into the slot. A second locking bolt is spirally passed through the center of the plug. The bottom end of the second locking bolt is screwed into the screw hole. A fourth pulley is provided at the top of the plug. A second transmission belt is fitted onto the fourth pulley.

[0022] Furthermore, a base is provided at one end of the surface of the base, and through holes are provided in the base and the base at positions opposite to the material discharge hole. The surface of the base is inclined with the outside higher than the inside. The outer cylinder is installed on the base. Side plates are symmetrically provided at the outer end of the base. The bottom outer end of the base is rotatably placed between the two sets of side plates. A second drive rod is hinged to the bottom surface of the base.

[0023] Furthermore, the scraper is spiral-shaped, and the scraper and the first rotating shaft together form a notch with an extension direction parallel to the first rotating shaft. A scraper is installed in the notch. In the sludge suction mode, the scraper is removed from the notch and the scraper rotates to suction sludge. In the sludge discharge mode, the scraper is installed in the notch to scrape off the sludge adhering to the inner wall of the inner filter cartridge.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. Multiple workers can operate a mobile temporary storage unit to process mud on the construction site, thus solving the problem of mud processing difficulties caused by the large area and diverse terrain of the construction site, and realizing distributed mud collection at the front end;

[0026] 2. After the mobile storage box is full, the mud can be discharged into the inner filter cylinder through the material pipe. The inner filter cylinder can be rotated to perform mud-water centrifugal separation. After the liquid is thrown out, it is discharged into the sedimentation tank through the drain chamber and the discharge hole.

[0027] 3. The cooperation between the sludge scraping component and the drive component can collect sludge during sludge extraction, thereby accelerating the extraction efficiency. During sludge discharge, the drive component can drive the inner filter cartridge to rotate, and the scraper can scrape off the sludge in the inner filter cartridge. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the multi-stage wastewater treatment device for construction sites according to the present invention.

[0029] Figure 2 This is a schematic diagram of the connection structure between the centrifugal unit and the end plate of the present invention;

[0030] Figure 3 This is a bottom view of the centrifuge unit structure of the present invention;

[0031] Figure 4 This is a schematic diagram of the vertical structure of the sludge scraping assembly of the present invention;

[0032] Figure 5 This is a schematic diagram of the external connection structure of the end plate of the present invention;

[0033] Figure 6 This is a schematic diagram of the drive component structure of the present invention;

[0034] Figure 7 This is a schematic diagram of the side clamp connection structure of the present invention;

[0035] Figure 8 This is a schematic diagram of the steering switching component structure of the present invention;

[0036] Figure 9 This is a schematic diagram of the slot structure of the present invention;

[0037] Figure 10This is a schematic diagram of the cross-sectional structure of the sludge scraping assembly and the inner filter cylinder of the present invention;

[0038] Figure 11 This is a schematic diagram of the liquid aspiration operation state of the mobile temporary storage unit of the present invention;

[0039] Figure 12 This is a schematic diagram of the guide trolley structure of the present invention;

[0040] Figure 13 This is a top view of the sludge scraping assembly under liquid suction conditions according to the present invention;

[0041] Figure 14 This is a bottom view of the sludge scraping assembly under liquid suction conditions according to the present invention;

[0042] Figure 15 This is a schematic diagram of the external water pipe structure of the sludge scraper assembly of the present invention;

[0043] Figure label:

[0044] 100. Sedimentation tank;

[0045] 200. Flocculation box;

[0046] 300 Centrifugal unit; 310 Base; 311 Base; 312 Side plate; 320 Second drive rod; 330 Outer cylinder; 331 Discharge hole; 332 Assembly ring; 333 Second positioning hole; 340 Inner filter cartridge; 341 Toothed ring; 350 Pushing assembly; 351 Fixing frame; 352 First drive rod; 353 Push plate;

[0047] 400. Mobile temporary storage unit; 410. Mobile temporary storage box; 411. Filter plate; 412. Inlet pump; 413. Drain pump; 420. Hose; 430. Material pipe; 440. End plate; 441. First positioning hole; 442. Inclined slide.

[0048] 500, Sludge scraper assembly; 510, Hanging plate; 511, Perforation; 520, Side clamp; 530, Rotating block; 540, First locking bolt; 550, First rotating shaft; 551, First liquid guide hole; 552, Rotary joint; 560, First conical tooth; 570, Scraper; 571, Spray hole; 580, Third locking bolt;

[0049] 600. Drive assembly; 610. Main drive motor; 611. Side bracket; 572. Notch; 573. Scraper;

[0050] 620. First driven component; 621. Second rotating shaft; 622. First gear; 623. Second bevel gear;

[0051] 630. Second driven component;

[0052] 640. Transfer component; 641. First pulley; 642. Third shaft; 643. Second gear; 644. Second pulley; 645. First transmission belt; 646. Second transmission belt; 647. Third gear; 648. Third pulley; 649. Fourth shaft.

[0053] 650. Steering switching component; 651. Insert post; 652. Slot; 653. Screw hole; 654. Second locking bolt; 655. Fourth pulley;

[0054] 700. Guide trolley; 710. Support frame; 720. Roller frame;

[0055] 800. Water pipe connector. Detailed Implementation

[0056] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] Example: This invention provides a technical solution for a multi-stage treatment device for construction site wastewater, such as... Figures 1-15 As shown, it includes: a sedimentation tank 100, which is used for primary sedimentation of mud and water;

[0058] Flocculation box 200 is connected to the output end of sedimentation box 100 and is used to flocculate and settle mud and water.

[0059] The centrifuge unit 300 includes a base 310, an outer cylinder 330, and an inner filter cartridge 340. The base 310 is mounted on the top of the sedimentation tank 100. The outer cylinder 330 is hinged to the top of the base 310 and arranged at an angle. The bottom of the outer cylinder 330 has a discharge hole 331, and the outer end face of the outer cylinder 330 has an assembly ring 332. The inner filter cartridge 340 is coaxially rotatably mounted inside the outer cylinder 330, and the end of the inner filter cartridge 340 extends outward from the assembly hole. A drainage chamber is provided between the inner filter cylinder 340 and the outer cylinder 330. The two ends of the inner filter cylinder 340 are open structures. The outer end face of the inner filter cylinder 340 is provided with a toothed ring 341 and the inner end is equipped with a pusher assembly 350. The outer end of the inner filter cylinder is provided with an annular groove, and a toothed ring is installed inside the annular groove. The inner diameter of the toothed ring is not greater than the inner diameter of the inner filter cylinder. The inner filter cylinder 340 is used for centrifugal rotation to separate mud and water. The pusher assembly 350 is used to push out mud blocks in the inner filter cylinder 340.

[0060] The mobile storage unit 400 includes a mobile storage box 410, a hose 420, a feed pipe 430, an end plate 440, a drive assembly 600, and a scraper assembly 500. A filter plate 411 is installed on the top of the interior of the mobile storage box 410. An inlet pump 412 is installed on the top of the outer wall of the mobile storage box 410, and a drain pump 413 is installed on the bottom of the outer wall. The inlet pump 412 and the drain pump 413 are connected in parallel to the hose 420. The end of the hose 420 is connected to the feed pipe 430, which is installed at the center of the end plate 440. The drive assembly 600 is installed on the surface of the end plate 440, and the scraper assembly 500 is symmetrically installed on the bottom surface of the end plate 440. The feed pipe 430 passes through the end plate 440 and extends between the two scraper assemblies 500. The mobile storage unit 400 includes the following operating modes:

[0061] In the sludge suction mode, two sets of sludge scraping components 500 are vertically distributed with the material pipe 430. The drive component 600 drives the two sets of sludge scraping components 500 to rotate synchronously in opposite directions to gather the sludge inward to the material pipe 430. The material pipe 430 then sucks the sludge water to the mobile temporary storage box 410.

[0062] In the sludge discharge mode, two sets of sludge scraping components 500 are distributed in parallel with the material pipe 430 and unlocked from the drive component 600. The end plate 440 is connected to the assembly ring 332. The sludge scraping component 500 is inserted into the inner filter cylinder 340. The drive component 600 drives the inner filter cylinder 340 to rotate at two points. The material pipe 430 pulls out the mud and water in the moving temporary storage box 410 to the inner filter cylinder 340. The sludge scraping component 500 scrapes off the sludge attached to the inner wall of the inner filter cylinder 340.

[0063] 1. Multiple workers can operate a mobile temporary storage unit 400 to process mud on the construction site, thus solving the problem of difficult mud processing caused by the large area and diverse terrain of the construction site, and realizing distributed mud collection at the front end; workers can absorb the mud on the construction site through the material pipe 430 under negative pressure, and the mud is output to the mobile temporary storage box 410. The connection between the hose 420 and the material pipe 430 can further increase the suction coverage of the material pipe 430. In this way, the mud can be stored in the mobile temporary storage box 410. After the mobile temporary storage box 410 is full, it is transferred to the centrifugal unit 300. The top of the mobile temporary storage box 410 is equipped with a filter plate 411, which can filter out larger mud lumps, and the workers can directly clean it later.

[0064] 2. After the mobile temporary storage box 410 is full, the mud can be discharged through the material pipe 430 into the inner filter cylinder 340. The inner filter cylinder 340 can be centrifuged to separate mud and water. After the liquid is thrown out, it is discharged into the sedimentation tank 100 through the liquid discharge chamber and the material discharge hole 331.

[0065] 3. The combined design of the scraper assembly 500 and the drive assembly 600 achieves the following effects:

[0066] 3.1 After the mud at the location touched by the material pipe 430 is completely absorbed, the mud at other locations accumulates slowly. To solve this problem, the mud scraping assembly 500 is designed to be adjusted to be perpendicular to the material pipe 430. In this way, the drive assembly 600 can drive the mud scraping assembly 500 to rotate. Both sets of mud scraping assemblies 500 can rotate inward, thereby causing the mud and water to accumulate towards the center. When the material pipe 430 moves, the material pipe 430 can use negative pressure to extract the accumulated mud and water, improving the efficiency of mud and water extraction and cleaning, and solving the problem of inconvenient mud and water dispersion and suction.

[0067] 3.2 Based on the feature of the end plate 440 having a drive assembly 600, and the fact that the inner filter cartridge 340 requires the material tube 430 to be inserted before it can rotate, only a toothed ring 341 is reserved at the inner filter cartridge 340, and no motor drive is provided. This can bring the following unexpected technical effects:

[0068] 3.2.1 Since the inner filter cartridge 340 does not have a motor drive, the installation cost can be reduced; the drive assembly 600 can mesh with the gear ring 341 to drive the inner filter cartridge 340 to rotate at two points.

[0069] 3.2.2 The sludge scraping assembly 500 can be adjusted to be parallel to the material pipe 430. When the material pipe 430 is inserted, the sludge scraping assembly 500 can scrape the sludge from the inner filter cylinder 340 to prevent the inner filter cylinder 340 from becoming clogged.

[0070] As a preferred embodiment, the bottom surface of the end plate 440 is provided with a first positioning hole 441 arranged in a ring array, and the interior of the assembly ring 332 is provided with a matching second positioning hole 333. During insertion and positioning, the first positioning hole of the end plate 440 is aligned with the second positioning hole 333 of the assembly ring 332, and positioning can be completed using a pin or a locking screw.

[0071] After centrifugation, to clean the sludge inside the inner filter cartridge 340, this embodiment provides the following solution: The pushing assembly 350 includes a fixing frame 351, with first driving rods 352 symmetrically arranged inside the fixing frame 351. The output ends of both sets of first driving rods 352 are connected to push plates 353, which are slidably embedded in the inner filter cartridge 340. During cleaning, the first driving rods 352 can drive the push plates 353 to move. The push plates 353 move along the inner filter cartridge 340, thus scraping off and pushing out the sludge inside the inner filter cartridge 340.

[0072] To ensure that the sludge scraping assembly 500 can achieve the aforementioned effects of collecting construction site sludge and scraping sludge from the inner filter cartridge 340, this embodiment provides the following solution: The sludge scraping assembly 500 includes a hanging plate 510, with side clamps 520 vertically and symmetrically arranged on the bottom side wall of the hanging plate 510. A rotating block 530 is rotatably installed between the two sets of side clamps 520. The rotating block 530 is positioned with respect to the side clamps 520 by a first locking bolt 540. A first rotating shaft 550 is rotatably embedded inside the rotating block 530. A first conical tooth 560 is provided on the outer wall of the first rotating shaft 550, located outside the side clamps 520. A scraper 570 is provided on the outer wall of the first rotating shaft 550, located below the first conical tooth 560. The top end of the first rotating shaft is fixed inside the rotating block by a third locking bolt 580. When scraping mud, the scraper does not need to rotate, and the third locking bolt is rotated inward to position the first rotating shaft; when gathering mud on the ground, the third locking bolt is rotated outward, and the first rotating shaft can rotate normally.

[0073] 1. The rotating block 530 is designed to rotate 90° up and down around the side clamping plate 520, thereby adjusting the position of the scraper 570 to adapt to the scraper 570 state in different modes. While rotating, the driving method of the scraper 570 will also be adjusted. The rotation method is manual adjustment. First, unscrew the first locking bolt 540, then adjust the rotation of the rotating block 530, and after adjustment, tighten the first locking bolt 540.

[0074] 2. In the sludge suction mode, the scraper 570 rotates in a cycle, which can quickly collect mud and water inward; in the sludge discharge mode, the outer edge of the scraper 570 contacts the inner wall of the inner filter cylinder 340 horizontally, and the scraper 570 can scrape off the mud blocks in the inner filter cylinder 340.

[0075] refer to Figure 10 and 15 In this embodiment, to facilitate the rapid movement of mud and water towards the feed pipe 430 to accelerate mud suction, the scraper is also made spiral-shaped to promote the movement of mud and water towards the feed pipe in the mud suction mode. In order to facilitate rapid mud discharge when the scraper is spiral-shaped, this embodiment also provides a notch 572 with an extension direction parallel to the first rotating shaft on the whole formed by the scraper and the first rotating shaft. At the same time, a scraper 573 is also provided. In the mud suction mode, the scraper 573 is removed from the notch 572, and the scraper rotates to promote mud suction. In the mud discharge mode, the scraper 573 is installed in the notch 572 (the scraper is locked in the notch by bolts, etc.), and its outer edge is in contact with the inner wall of the inner filter cylinder. The first rotating shaft is locked in position by the third locking bolt 580. When the inner filter cylinder rotates, the scraper 573 can effectively scrape off the mud adhering to the inner wall of the inner filter cylinder, which facilitates mud-water separation.

[0076] In suction mode, the drive assembly 600 needs to drive two sets of scraper assemblies 500 to move synchronously in opposite directions. In discharge mode, the scraper assemblies 500 need to remain stationary, while the drive assembly 600 needs to rotate synchronously in the same direction to drive the gear ring to rotate at two points. To solve the above problems, the following solution is proposed:

[0077] In one preferred embodiment, the drive assembly 600 includes a main drive motor 610, a first driven component 620, a transfer component 640, and a second driven component 630. The sidewall of the main drive motor 610 is mounted on the surface of the end plate 440 via a side bracket 611. The first driven component 620 and the second driven component 630 are symmetrically arranged on both sides of the feed pipe 430. The main drive motor 610 is vertically arranged and its bottom end is connected to the top end of the first driven component 620. The bottom end of the first driven component 620 is engaged with a set of scraper assemblies 500, and the bottom end of the second driven component 630 is engaged with another set of scraper assemblies 500. The top ends of the first driven component 620 and the second driven component 630 are connected by the transfer component 640. The first driven component 620, the second driven component 630, and the transfer component 640 are arranged in a triangular pattern. The working modes of the first driven component 620 and the second driven component 630 can be adjusted by using the transfer component 640, so that the transfer component 640 can meet the driving needs of different modes.

[0078] In one preferred embodiment, the first driven component 620 and the second driven component 630 have the same structure. The first driven component 620 includes a first gear 622, a second rotating shaft 621, and a second bevel tooth 623. The second rotating shaft 621 is vertically rotatable within the end plate 440. The top end of the second rotating shaft 621 is connected to the main drive motor 610. The bottom outer wall of the second rotating shaft 621 is provided with the first gear 622, and the bottom end of the second rotating shaft 621 is vertically provided with the second bevel tooth 623. The first gear 622 is located above the second bevel tooth 623. In the sludge suction mode, the second bevel tooth 623 meshes perpendicularly with the first bevel tooth 623. In the sludge discharge mode, the first rotating shaft 550 and the second rotating shaft 621 are located on the same central axis. The first bevel tooth 560 disengages from the second bevel tooth 623, and the first gear 622 meshes with the inner wall of the gear ring 341. The main drive motor 610 can drive the second rotating shaft 621 to rotate. The second rotating shaft 621 drives the first gear 622 and the second bevel gear 623 at the bottom to rotate. The second bevel gear 623 is used to mesh perpendicularly with the first bevel gear 560, thereby realizing the drive of the sludge scraping assembly 500. The first gear 622 is used to mesh with the toothed ring 341 of the inner filter cartridge 340, thereby realizing the dual-point drive of the inner filter cartridge 340.

[0079] In one preferred embodiment, the transfer component 640 includes a first pulley 641, a third shaft 642, a second pulley 644, and a steering switching component 650. The first pulley 641 is located on the outer wall of the second shaft 642. The third shaft 642 is rotatably mounted on the surface of the end plate 440. The second pulley 644 is located at the top of the second driven component 630. The third pulley 644 and a second gear 643 are located at the bottom of the outer wall of the third shaft 642. The second gear 643 is located above the third pulley 648. The first pulley 641 and the third pulley are connected by a first transmission belt 645. One side of the second gear 643 is engaged. A third gear 647 is connected and mounted on a fourth rotating shaft 649. The distance between the second gear 643 and the second pulley 644 is the same as the distance between the third gear 647 and the second pulley 644. The second pulley 644 is connected to a steering switching component 650 via a second transmission belt 646. In sludge suction mode, the steering switching component 650 is mounted on the third gear 647, causing the first driven component 620 and the second driven component 630 to rotate synchronously in opposite directions. In sludge discharge mode, the steering switching component 650 is mounted on the second gear 643, causing the first driven component 620 and the second driven component 630 to rotate synchronously in the same direction.

[0080] The steering switching component 650 includes a pin 651, and slots 652 are provided at the center of the third rotating shaft 642 and the fourth rotating shaft 649. A screw hole 653 is provided on the bottom surface of the slot. The bottom end of the pin 651 is a polygonal prism. The pin 651 is inserted into the slot 652. A second locking bolt 654 is spirally passed through the center of the pin 651. The bottom end of the second locking bolt 654 is screwed into the screw hole 653. A fourth pulley 655 is provided at the top of the pin 651. A second transmission belt 646 is fitted on the fourth pulley 655.

[0081] When the polygonal prism insert is inserted into the slot, it can achieve anti-rotation insertion. Then, the second locking bolt is screwed into the screw hole to fix the insert onto the third gear or the fourth shaft.

[0082] To improve the feeding efficiency, the following solution is proposed: a base 311 is provided at one end of the surface of the base 310. The surface of the base 311 is inclined with the outside higher than the inside. The outer cylinder 330 is installed on the base 311. Side plates 312 are symmetrically provided at the outer end of the base 310. The bottom outer end of the base 311 is rotatably placed between the two sets of side plates 312. A second drive rod 320 is hinged to the bottom surface of the base 311. The other end of the second drive rod is hinged to the base.

[0083] 1. The base 311 is designed to be in a state of high outside and low inside when working. This way, during centrifugal motion, the mud and water will mainly accumulate in the lower part of the centrifuge cylinder, and will not accumulate in large quantities at the inlet. This prevents the liquid from flowing back through the feed pipe 430, making the discharge of liquid through the feed pipe 430 smoother.

[0084] 2. When the mud lumps in the inner filter cylinder 340 are discharged, the second drive rod 320 drives the inner filter cylinder 340 to rotate upward to tilt downward, so that the mud lumps can fall off fully under the action of gravity, and it is also convenient for workers to perform secondary rinsing.

[0085] Since the end plate 440 has a certain weight, lifting it manually is quite strenuous. To solve this problem, the following solution is proposed: In suction mode, the end plate 440 is inserted into a guide trolley 700. The guide trolley 700 includes a support frame 710, and the end plate 440 is inserted into the support frame 710. Roller frames 720 are symmetrically arranged on both sides of the support frame 710. In use, the guide trolley 700 can also be configured so that the worker inserts the end plate 440 upside down into the support frame 710. This way, pushing the end plate 440 will also move the support frame 710 and the roller frames 720, making the operation smoother.

[0086] refer to Figure 13 and 15 To enhance the mud flushing effect, a first liquid guide hole 551 is provided inside the first rotating shaft 550. One end of the first liquid guide hole is equipped with a rotating joint 552, and the other end is connected to a spray hole 571. The spray hole penetrates the left end of the first rotating shaft to flush the mud in front of it (see reference). Figure 15 The scraper plate 510 has a through hole 511 for a water supply pipe connector, which is connected to the rotary joint 552. When collecting mud and water, the scraper plate rotates to a horizontal position, which corresponds to the through hole of the rotary joint. Workers can then screw the water pipe connector through the through hole into the rotary joint to connect the scraper plate to the water supply.

[0087] In specific implementation of this invention:

[0088] S1. Mud and water collection at the construction site:

[0089] Multiple workers push multiple sets of mobile temporary storage boxes 410, rotate and adjust the rotating block 530 so that both sets of scrapers 570 are adjusted to be parallel to the end plate 440, the first bevel tooth 560 and the second bevel tooth 623 are perpendicularly engaged, the first locking bolt 540 is tightened, the end plate 440 is inserted into the support frame 710, and the two sets of scrapers 570 are positioned in front of the moving direction; the insert 651 is inserted into the slot 652 of the fourth rotating shaft;

[0090] The main drive motor 610 drives the second rotating shaft 621 to rotate, the second rotating shaft 621 drives the second bevel gear 623 to rotate, the second bevel gear 623 drives the first bevel gear 560 to rotate, and thus drives the first rotating shaft 550 and scraper 570 to rotate; the second rotating shaft 621 drives the third rotating shaft to rotate through the first pulley 641, the first transmission belt 645, and the third pulley, the second gear 643 drives the third gear 647 to rotate, and thus drives the upper insertion post 651 to rotate, the fourth pulley 655 at the top of the insertion post 651 drives the second pulley 644 to rotate through the second transmission belt 646, and thus drives the second driven component 630 to rotate, so as to realize the synchronous and opposite rotation of the two sets of scrapers 570;

[0091] The operator pushes the feed pipe, the guide trolley provides auxiliary support and guidance, the spray nozzle sprays water to rinse the mud beforehand, the scraper 570 rotates synchronously in opposite directions to make the mud gather, the feed pipe 430 moves forward to contact the mud, the feed pump 412 draws out the mud, so that the mud is discharged above the filter plate 411, the filter plate 411 filters the mud, and the mud and water are temporarily stored inside the mobile temporary storage box 410.

[0092] S2, Mud Transfer

[0093] After the mobile temporary storage box 410 is full, it is moved to one side of the sedimentation box 100; the sludge scraper assembly 500 is rotated and adjusted to be perpendicular to the end plate 440; the worker connects the end plate 440 to the assembly ring 332; the positioning pin is inserted into the second positioning hole 333; the first gear 622 is engaged and placed in the gear ring 341; the material pipe 430 extends into the inner filter cylinder 340; and the scraper 570 contacts the inner wall of the inner filter cylinder 340.

[0094] When the sludge scraper assembly 500 has been rotated and adjusted, the first bevel tooth 560 and the second bevel tooth 623 engage, transferring the insert into the slot of the third rotating shaft;

[0095] The main drive motor 610 drives the second rotating shaft 621 to rotate, which in turn drives the second driven component 630 to rotate synchronously and in the same direction. The two sets of first gears 622 rotate to drive the gear ring 341 and the inner filter cartridge 340 to rotate. The discharge pump 413 draws the sludge into the inner filter cartridge 340, where the inner filter cartridge 340 is centrifuged and dewatered. The scraper 570 scrapes off the sludge. The filtered water falls into the sedimentation tank 100.

[0096] After the mud and water in the mobile temporary storage box 410 are drained, the end plate 440 is removed, the second drive rod 320 drives the base 311 to rotate to the tilt, and the first drive rod 352 drives the push plate 353 to push out the mud block in the inner filter cylinder 340.

[0097] S3. The sedimentation tank 100 performs a sedimentation of the muddy water. Then, the upper liquid is output to the flocculation tank 200, where flocculant is added to cause the muddy water to flocculate and settle in the flocculation tank 200. Finally, the clear water at the top of the flocculation tank 200 is discharged. Each drive rod is exemplarily an electric rod.

[0098] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-stage wastewater treatment device for construction sites, characterized in that, include: Sedimentation tank, used for primary sedimentation of muddy water; The flocculation box is connected to the output end of the sedimentation box and is used to flocculate and settle mud and water. The centrifugal unit includes a base, an outer cylinder, and an inner filter cylinder. The base is installed on the top of the sedimentation tank. The top of the base is hinged to an inclined outer cylinder. The bottom of the outer cylinder has a discharge hole, and the outer end face of the outer cylinder has an assembly ring. The inner filter cylinder is coaxially rotatably installed inside the outer cylinder. The end of the inner filter cylinder extends outward from the assembly hole. A drainage chamber is left between the inner filter cylinder and the outer cylinder. The two ends of the inner filter cylinder are open structures. The outer end face of the inner filter cylinder has a toothed ring, and the inner end is equipped with a pusher assembly. The inner filter cylinder is used for centrifugal rotation to separate mud and water, and the pusher assembly is used to push out mud lumps in the inner filter cylinder. The mobile storage unit includes a mobile storage box, a hose, a feed pipe, an end plate, a drive assembly, and a scraper assembly. A filter plate is installed at the top of the mobile storage box. An inlet pump is installed at the top of the outer wall of the mobile storage box, and a drain pump is installed at the bottom of the outer wall. The inlet and drain pumps are connected in parallel to the hose. The end of the hose is connected to the feed pipe, which is installed at the center of the end plate. The drive assembly is installed on the surface of the end plate, and the scraper assembly is symmetrically installed on the bottom surface of the end plate. The feed pipe passes through the end plate and extends between the two sets of scraper assemblies. The mobile storage unit includes the following operating modes: In the sludge suction mode, two sets of sludge scraping components are vertically distributed with the material pipe. The drive component drives the two sets of sludge scraping components to rotate synchronously in opposite directions to gather the sludge inward to the material pipe. The material pipe then sucks the sludge and water into the mobile temporary storage box. In the sludge discharge mode, two sets of sludge scraping components are distributed parallel to the material pipe and unlocked from the drive component. The end plate is connected to the assembly ring. The sludge scraping components are inserted into the inner filter cylinder. The drive component drives the inner filter cylinder to rotate at two points. The material pipe is pulled out and the mud and water in the temporary storage box are moved to the inner filter cylinder. The sludge scraping components scrape off the sludge attached to the inner wall of the inner filter cylinder.

2. The multi-stage wastewater treatment device for construction sites according to claim 1, characterized in that: The bottom surface of the end plate is provided with a first positioning hole arranged in a ring array, and the inside of the assembly ring is provided with a second positioning hole. The first positioning hole and the second positioning hole are positioned by a pin or bolt.

3. The multi-stage wastewater treatment device for construction sites according to claim 2, characterized in that: The feeding assembly includes a fixed frame, and the inside of the fixed frame is symmetrically provided with first drive rods. The output ends of the two sets of first drive rods are connected to push plates, and the push plates are slidably embedded in the inner filter cylinder.

4. The multi-stage wastewater treatment device for construction sites according to claim 3, characterized in that: The sludge scraping assembly includes a hanging plate, with side clamps vertically and symmetrically arranged on the bottom side wall of the hanging plate. A rotating block is rotatably installed between the two sets of side clamps. The rotating block is positioned with the side clamps by a first locking bolt. A first rotating shaft is rotatably embedded inside the rotating block. The outer wall of the first rotating shaft is provided with a first conical tooth. The first conical tooth is located at the bottom of the side clamps. A scraper is provided on the outer wall of the first rotating shaft. The top end of the first rotating shaft is fixed inside the rotating block by a third locking bolt.

5. A multi-stage wastewater treatment device for construction sites according to claim 4, characterized in that: The drive assembly includes a main drive motor, a first driven component, a transfer component, and a second driven component. The sidewall of the main drive motor is mounted on the surface of the end plate via a side bracket. The first and second driven components are symmetrically arranged on both sides of the feed pipe. The main drive motor is vertically arranged and its bottom end is connected to the top end of the first driven component. The bottom end of the first driven component is engaged with a set of scraping components, and the bottom end of the second driven component is engaged with another set of scraping components. The top ends of the first and second driven components are connected by a transfer component. The first driven component, the second driven component, and the transfer component are arranged in a triangular pattern.

6. A multi-stage wastewater treatment device for construction sites according to claim 5, characterized in that: The first driven component and the second driven component adopt the same structure. The first driven component includes a first gear, a second rotating shaft and a second bevel tooth. The second rotating shaft is vertically rotatable inside the end plate. The top of the second rotating shaft is connected to the main drive motor. The bottom outer wall of the second rotating shaft is provided with the first gear. The bottom of the second rotating shaft is vertically provided with the second bevel tooth. The first gear is located above the second bevel tooth. In suction mode, the second bevel tooth meshes perpendicularly with the first bevel tooth; In the sludge discharge mode, the first rotating shaft and the second rotating shaft are located on the same central axis, the first bevel tooth and the second bevel tooth are disengaged, and the first gear is engaged and placed on the inner wall of the gear ring.

7. A multi-stage wastewater treatment device for construction sites according to claim 6, characterized in that: The transfer component includes a first pulley, a third shaft, a second pulley, and a steering switching component. The first pulley is located on the outer wall of the second shaft. The third shaft is rotatably mounted on the surface of an end plate. The second pulley is located at the top of the second driven component. The third pulley and a second gear are located at the bottom of the outer wall of the third shaft. The second gear is located above the third pulley. A mounting plate is located at the top of the third shaft. The first pulley and the third pulley are connected by a first transmission belt. One side of the second gear meshes with the third gear. The third gear is mounted on a fourth shaft. The distance between the second gear and the second pulley is the same as the distance between the third gear and the second pulley. The second pulley is connected to the steering switching component via a second transmission belt. In suction mode, the steering switching component is mounted on the third gear, causing the first driven component and the second driven component to rotate synchronously in opposite directions; In sludge removal mode, the steering switching component is mounted on the assembly plate, so that the first driven component and the second driven component rotate synchronously in the same direction.

8. A multi-stage wastewater treatment device for construction sites according to claim 7, characterized in that: The steering switching component includes a plug, and slots are provided at the center of the third and fourth rotating shafts. A screw hole is provided on the bottom surface of the slot. The bottom end of the plug is a polygonal prism. The plug is inserted into the slot. A second locking bolt is spirally passed through the center of the plug. The bottom end of the second locking bolt is screwed into the screw hole. A fourth pulley is provided at the top of the plug. A second transmission belt is fitted onto the fourth pulley.

9. A multi-stage wastewater treatment device for construction sites according to claim 8, characterized in that: The base has a base at one end of its surface. The base and the base are provided with through holes at positions opposite to the material discharge hole. The surface of the base is inclined with the outside higher than the inside. The outer cylinder is installed on the base. The outer end of the base is symmetrically provided with side plates. The bottom outer end of the base is rotatably placed between the two sets of side plates. The bottom surface of the base is hinged with a second drive rod.

10. A multi-stage wastewater treatment device for construction sites according to claim 9, characterized in that: The scraper is spiral-shaped, and the scraper and the first rotating shaft together form a notch with an extension direction parallel to the first rotating shaft. A scraper is installed in the notch. In the sludge suction mode, the scraper is removed from the notch and the scraper rotates to suck up sludge. In the sludge discharge mode, the scraper is installed in the notch to scrape off the sludge attached to the inner wall of the inner filter cartridge.

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