Construction site wastewater multi-stage treatment device

Abstract

The invention discloses a construction site wastewater multi-stage treatment device, and relates to the technical field of construction site wastewater treatment.The construction site wastewater multi-stage treatment device comprises a settling tank used for conducting primary settling on muddy water; the flocculation box is communicated with the output end of the precipitation box and is used for carrying out flocculation precipitation on the muddy water; the centrifugal unit comprises a base, an outer cylinder body and an inner filter cylinder, the base is mounted at the top of the settling tank, the outer cylinder body which is obliquely arranged is hinged to the top of the base, a discharging hole is formed in the bottom of the outer cylinder body, an assembly ring is arranged on the outer end face of the outer cylinder body, the inner filter cylinder is coaxially and rotatably mounted in the outer cylinder body, and the end of the inner filter cylinder extends out of the assembly hole; the movable temporary storage unit comprises a movable temporary storage box, a hose, a material pipe, an end plate, a driving assembly and a mud scraping assembly; the construction site muddy water can be rapidly collected, and water can be rapidly drained for centrifugal separation and multiple precipitation treatment.

Description

Technical Field

[0001] The invention relates to the technical field of construction site wastewater treatment, in particular to a multi-stage treatment device for construction site wastewater. Background Art

[0002] During the construction process of construction projects, mud wastewater is a common source of pollution, especially after rainfall, when a large area of ​​mud-water mixture is easily formed at the construction site. This type of wastewater has the characteristics of high solid-liquid mixing degree and high viscosity. If it is not treated in time, it will directly affect the subsequent construction machinery operations and pose an environmental pollution risk.

[0003] Existing slurry wastewater treatment technologies have the following major drawbacks: During the collection phase, traditional manual handling methods utilize wheelbarrows and shovels for transfer. However, due to the low fluidity of the slurry, a single worker can only process a small amount per hour, and workers must maneuver back and forth through 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 the slurry wastewater requires manual handheld tools to continuously move the surrounding slurry toward the suction port. Once the wheelbarrow is full, it is dumped into a sedimentation tank. During the sedimentation process, a centrifuge is used to separate the mud and water, but the through-holes in the centrifuge are prone to clogging. Summary of the Invention

[0004] The object of the present 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-mentioned object, the present invention provides the following technical solution: a multi-stage construction site wastewater treatment device, comprising: a sedimentation tank for primary sedimentation of muddy water;

[0006] A flocculation tank is connected to the output end of the sedimentation tank and is used to flocculate and sediment the muddy water;

[0007] The centrifugal unit includes a base, an outer cylinder and an inner filter cartridge. The base is installed on the top of the sedimentation box. The top of the base is hinged with an outer cylinder arranged obliquely. The bottom of the outer cylinder is provided with a discharge hole, and the outer end surface of the outer cylinder is provided with a mounting ring. The inner filter cartridge is coaxially mounted inside the outer cylinder. The end of the inner filter cartridge extends outward through the mounting hole. A drainage cavity is left between the inner filter cartridge and the outer cylinder. Both ends of the inner filter cartridge are open structures. The outer end surface of the inner filter cartridge is provided with a gear ring, and a pusher assembly is installed at the inner end. The inner filter cartridge is used for centrifugal rotation to separate mud and water, and the pusher assembly is used to push out mud blocks in the inner filter cartridge.

[0008] The mobile temporary storage unit includes a mobile temporary storage box, a hose, a material pipe, an end plate, a drive assembly, and a mud scraping assembly. A filter plate is provided on the top of the mobile temporary storage box. A liquid inlet pump is installed on the top of the outer wall of the mobile temporary storage box, and a liquid discharge pump is installed on the bottom of the outer wall. The liquid inlet pump and the liquid discharge pump are connected to the hose in parallel. The end of the hose is assembled and connected to the material pipe. The material pipe is installed at the center of the end plate. The drive assembly is installed on the surface of the end plate. The mud scraping assembly is symmetrically installed on the bottom surface of the end plate. The material pipe passes through the end plate and extends between the two groups of mud scraping assemblies. The mobile temporary storage unit includes the following working modes:

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

[0010] In the mud discharge mode, two sets of scraper assemblies are distributed parallel to the material pipe and unlocked with the drive assembly. The end plate is docked at the assembly ring. The scraper assembly is inserted into the inner filter cartridge. The drive assembly drives the inner filter cartridge to rotate at two points. The material pipe is pulled out to move the mud and water in the temporary storage box to the inner filter cartridge. The scraper assembly scrapes off the sludge attached to the inner wall of the inner filter cartridge.

[0011] Furthermore, the bottom surface of the end plate is provided with first positioning holes distributed in a ring array, the interior of the assembly ring is provided with second positioning holes, and the first positioning holes and the second positioning holes are positioned by pins or bolts.

[0012] Furthermore, the pushing assembly includes a fixing frame, and first driving rods are symmetrically provided inside the fixing frame. The output ends of the two groups of first driving rods are connected to push plates, and the push plates are slidably embedded in the inner filter cartridge.

[0013] Furthermore, the scraper assembly includes a hanging plate, and the side walls of the bottom end of the hanging plate are vertically symmetrically provided with side clamps. A rotating block is rotatably installed between the two sets of side clamps. The rotating block and the side clamps are positioned by a first locking bolt. The first rotating shaft is embedded in the internal rotation of the rotating block. The outer wall of the first rotating shaft is provided with a first bevel tooth. The first bevel tooth is located at the bottom of the side clamp, and the outer wall of the first rotating shaft is provided with a scraper; the top end of the first rotating shaft is fixed in 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 side wall of the main drive motor is mounted on the end plate surface through a side bracket. The first driven component and the second driven component are symmetrically placed on both sides of the material pipe. The main drive motor is arranged vertically and the bottom end is connected to the top of the first driven component. The bottom end of the first driven component is engaged and connected to a group of scraping components. The bottom end of the second driven component is engaged and connected to another group of scraping components. The top of the first driven component and the top of the second driven component are connected through a transfer component. The first driven component, the second driven component and the transfer component are distributed in a triangle.

[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 gear, the second rotating shaft is vertically rotated and arranged in the end plate, the top end of the second rotating shaft is connected to the main drive motor, the first gear is provided on the outer wall of the bottom end of the second rotating shaft, the second bevel gear is vertically provided on the bottom end of the second rotating shaft, and the first gear is located above the second bevel gear;

[0016] In the mud suction mode, the second bevel gear meshes vertically with the first bevel gear;

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

[0018] Furthermore, the transfer component includes a first pulley, a third rotating shaft, a second pulley and a steering switching component, the outer wall of the second rotating shaft is provided with a first pulley, the third rotating shaft is rotatably placed on the surface of the end plate, the top of the second driven component is provided with a second pulley, the bottom of the outer wall of the third rotating shaft is provided with a third pulley and a second gear, the second gear is located above the third pulley, and the top of the third rotating shaft is provided with an assembly plate, the first pulley and the third pulley are connected by a first transmission belt; one side of the second gear is meshed with the third gear, and the third gear is installed on the fourth rotating shaft, and the spacing between the second gear and the second pulley is the same as the spacing between the third gear and the second pulley; the second pulley is connected to the steering switching component through the second transmission belt;

[0019] In the mud suction mode, the steering switching component is assembled on the third gear, so that the first driven component and the second driven component rotate synchronously in opposite directions;

[0020] In the mud discharge mode, the steering switching component is assembled 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 column, and slots are provided at the centers of the third rotating shaft and the fourth rotating shaft. Screw holes are provided on the inner bottom surfaces of the slots. The bottom end of the column is a polygonal column, and the column is inserted into the slot. A second locking bolt is spirally passed through the center of the column, and the bottom end of the second locking bolt is screwed into the screw hole. A fourth pulley is provided at the top of the column, and the second transmission belt is mounted on 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 inside the base at positions relative to the discharge hole. The surface of the base is in an inclined state with the outside higher and the inside lower. The outer cylinder is installed on the base, and side panels are symmetrically provided at the outer end of the base. The outer end of the bottom of the base is rotated and placed between the two sets of side panels, and the bottom surface of the base is hinged with a second drive rod.

[0023] Furthermore, the scraper is spiral-shaped, and a notch extending in a direction parallel to the first rotating shaft is provided on the overall structure formed by the scraper and the first rotating shaft, and a scraper plate is installed in the notch; wherein, in the mud suction mode, the scraper plate is removed from the notch, and the scraper rotates to suck the mud; in the mud discharge mode, the scraper plate is installed in the notch to scrape off the sludge attached to the inner wall of the inner filter cartridge.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

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

[0026] 2. When the mobile temporary storage box is full, the mud can be discharged into the inner filter cartridge through the material pipe. The inner filter cartridge rotates to centrifugally separate the mud and water. The liquid is thrown out and discharged into the sedimentation box through the drainage cavity and the discharge hole.

[0027] 3. The cooperation between the scraper assembly and the drive assembly can gather mud during mud extraction and speed up the extraction efficiency. When discharging mud, the drive assembly can drive the inner filter cartridge to rotate, and the scraper can scrape off the sludge in the inner filter cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of a multi-stage construction site wastewater treatment device according to the present invention;

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

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

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

[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 structure of the drive assembly of the present invention;

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

[0035] Figure 8 This is a schematic structural diagram of the steering switching component 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 mud scraping assembly and the inner filter cartridge of the present invention;

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

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

[0040] Figure 13 This is a schematic diagram of the structure of the scraper assembly in the liquid absorption state according to the present invention from a top view;

[0041] Figure 14 This is a schematic diagram of the structure of the scraper assembly in the liquid absorption state when viewed from above;

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

[0043] Reference numerals:

[0044] 100. Sedimentation tank;

[0045] 200, flocculation box;

[0046] 300, centrifugal unit, 310, base, 311, pedestal, 312, side plate, 320, second drive rod, 330, outer cylinder, 331, feed hole, 332, assembly ring, 333, second positioning hole, 340, inner filter cartridge, 341, gear ring, 350, pusher assembly, 351, fixing bracket, 352, first drive rod, 353, pusher plate;

[0047] 400, mobile temporary storage unit, 410, mobile temporary storage box, 411, filter plate, 412, liquid inlet pump, 413, liquid discharge pump, 420, hose, 430, material pipe, 440, end plate, 441, first positioning hole, 442, inclined chute;

[0048] 500, mud scraper assembly, 510, hanging plate, 511, perforation, 520, side clamping plate, 530, rotating block, 540, first locking bolt, 550, first rotating shaft, 551, first liquid guide hole, 552, rotating joint, 560, first bevel gear, 570, scraper, 571, liquid 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 rotating shaft, 643, second gear, 644, second pulley, 645, first transmission belt, 646, second transmission belt, 647, third gear, 648, third pulley, 649, fourth rotating shaft;

[0053] 650, steering switching component, 651, plug 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 DESCRIPTION

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0057] Embodiment: The present invention provides a technical solution for a multi-stage construction site wastewater treatment device, such as Figures 1-15 As shown, it includes: a sedimentation box 100, which is used to perform primary sedimentation of muddy water;

[0058] The flocculation tank 200 is connected to the output end of the sedimentation tank 100 and is used to flocculate and sediment the muddy water;

[0059] The centrifugal 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 top of the base 310 is hinged with an outer cylinder 330 arranged obliquely. The bottom of the outer cylinder 330 is provided with a feed hole 331, and the outer end surface of the outer cylinder 330 is provided with an assembly ring 332. The inner filter cartridge 340 is coaxially mounted inside the outer cylinder 330. The end of the inner filter cartridge 340 extends outwardly through the assembly hole. A drainage cavity is left between the inner filter cartridge 340 and the outer cylinder 330. Both ends of the inner filter cartridge 340 are open structures. The outer end surface of the inner filter cartridge 340 is provided with a gear ring 341, and the inner end is provided with a pusher assembly 350. The outer end of the inner filter cartridge is provided with a ring groove, and a gear ring is installed inside the ring groove. The inner diameter of the gear ring is not larger than the inner diameter of the inner filter cartridge. The inner filter cartridge 340 is used for centrifugal rotation to separate mud and water, and the pusher assembly 350 is used to push out the mud blocks in the inner filter cartridge 340.

[0060] The mobile temporary storage unit 400 includes a mobile temporary storage box 410, a hose 420, a material pipe 430, an end plate 440, a drive assembly 600, and a mud scraping assembly 500. A filter plate 411 is provided at the top of the mobile temporary storage box 410. A liquid inlet pump 412 is installed at the top of the outer wall of the mobile temporary storage box 410, and a liquid discharge pump 413 is installed at the bottom of the outer wall. The liquid inlet pump 412 and the liquid discharge pump 413 are connected in parallel to the hose 420. The end of the hose 420 is assembled and connected to the material pipe 430. The material pipe 430 is installed at the center of the end plate 440. The drive assembly 600 is installed on the surface of the end plate 440. The mud scraping assembly 500 is symmetrically installed on the bottom surface of the end plate 440. The material pipe 430 passes through the end plate 440 and extends between the two groups of mud scraping assemblies 500. The mobile temporary storage unit 400 includes the following working modes:

[0061] In the sludge suction mode, two sets of sludge scraping assemblies 500 are arranged perpendicular to the material pipe 430 . The driving assembly 600 drives the two sets of sludge scraping assemblies 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 and water into the mobile temporary storage box 410 .

[0062] In the mud discharge mode, two groups of mud scraping assemblies 500 are distributed parallel to the material pipe 430 and are unlocked with the drive assembly 600. The end plate 440 is docked at the assembly ring 332. The mud scraping assembly 500 is inserted into the inner filter cartridge 340. The drive assembly 600 drives the inner filter cartridge 340 to rotate at two points. The material pipe 430 draws out the mud and water in the mobile temporary storage box 410 to the inner filter cartridge 340. The mud scraping assembly 500 scrapes off the sludge attached to the inner wall of the inner filter cartridge 340.

[0063] 1. Multiple workers can each operate a mobile temporary storage unit 400 to process mud on the construction site, thus solving the problem of mud treatment difficulties caused by the large construction site area and diverse terrain, and realizing front-end distributed mud collection; workers can absorb the mud on the construction site through the material pipe 430 under negative pressure, and output the mud to the mobile temporary storage box 410. The way the hose 420 is connected to 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 can be transferred to the centrifugal unit 300 in a unified manner; a filter plate 411 is provided on the top of the mobile temporary storage box 410 to filter out larger mud clumps, which can be directly cleaned by subsequent workers;

[0064] 2. After the mobile temporary storage box 410 is full, the slurry can be discharged into the inner filter cartridge 340 through the material pipe 430. The inner filter cartridge 340 rotates to centrifuge to separate the mud and water. After the liquid is thrown out, it is discharged into the sedimentation box 100 through the drainage cavity and the discharge hole 331;

[0065] 3. The coordinated design of the scraper assembly 500 and the drive assembly 600 can achieve 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 more slowly. To solve this problem, the scraper 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 scraper assembly 500 to rotate. Both sets of scraper assemblies 500 can rotate inward, causing the mud and water to gather in the middle. In this way, 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 inconvenience in mud and water dispersion and suction.

[0067] 3.2. Due to the fact that the end plate 440 is provided with the drive assembly 600 and the inner filter cartridge 340 needs to be rotated after the material pipe 430 is inserted, only the gear 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 is not equipped with a motor drive, the installation cost can be reduced; the drive assembly 600 can engage with the gear ring 341 to drive the inner filter cartridge 340 to rotate at two points;

[0069] 3.2.2. The scraper assembly 500 can be adjusted to be parallel to the material pipe 430. In this way, when the material pipe 430 is inserted, the scraper assembly 500 can scrape the inner filter cartridge 340 to prevent the inner filter cartridge 340 from being blocked.

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

[0071] After the inner filter cartridge 340 has completed centrifugation, the present embodiment provides the following solution to clean the sludge inside the inner filter cartridge 340: The pusher assembly 350 includes a fixed frame 351, within which first drive rods 352 are symmetrically arranged. The output ends of two sets of first drive rods 352 are connected to push plates 353, which are slidably embedded in the inner filter cartridge 340. During the cleaning operation, the first drive rods 352 drive the push plates 353 to move, and the push plates 353 move along the inner filter cartridge 340 to scrape and push out the sludge inside the inner filter cartridge 340.

[0072] In order to enable the scraper assembly 500 to meet the above-mentioned effects of gathering construction site sludge and scraping sludge in the inner filter cartridge 340, this embodiment provides the following solution: the scraper assembly 500 includes a hanging plate 510, and the bottom end side wall of the hanging plate 510 is vertically symmetrically provided with side clamping plates 520, and a rotating block 530 is rotatably installed between the two groups of side clamping plates 520. The rotating block 530 and the side clamping plates 520 are positioned by a first locking bolt 540, and the internal rotation of the rotating block 530 is embedded with a first rotating shaft 550, and the outer wall of the first rotating shaft 550 is provided with a first bevel tooth 560, and the first bevel tooth 560 is located on the outside of the side clamping plate 520, and the outer wall of the first rotating shaft 550 is provided with a scraper 570, and the scraper 570 is located below the first bevel tooth 560; the top end of the first rotating shaft is fixed in 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 ground mud, 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. This allows the position of the scraper 570 to be adjusted to suit the scraper 570 in different modes. During the rotation, the drive mode of the scraper 570 is also adjusted. The rotation is manually adjusted by first loosening the first locking bolt 540, then adjusting the rotation of the rotating block 530. After the adjustment is completed, tighten the first locking bolt 540.

[0074] 2. In the mud suction mode, the scraper 570 rotates cyclically to quickly gather mud and water inward; in the mud discharge mode, the outer edge of the scraper 570 horizontally contacts the inner wall of the inner filter cartridge 340, and the scraper 570 can scrape off the mud blocks in the inner filter cartridge 340.

[0075] refer to Figure 10 and 15 In this embodiment, in order to facilitate the rapid movement of mud and water toward the material pipe 430 to accelerate mud suction, the scraper is also made spiral to promote the movement of mud and water toward the material pipe in the mud suction mode; and in order to facilitate rapid mud discharge when the scraper is spiral, this embodiment also provides a notch 572 with an extension direction parallel to the first rotating shaft on the overall structure formed by the scraper and the first rotating shaft, and a scraper plate 573 is also provided. In the mud suction mode, the scraper plate 573 is removed from the notch 572, and the scraper rotates to promote mud suction. In the mud discharge mode, the scraper plate 573 is installed in the notch 572 (the scraper plate is locked in the notch by bolts, etc.), and its outer edge contacts the inner wall of the inner filter cartridge. The first rotating shaft is locked in position by the third locking bolt 580 at this time. When the inner filter cartridge rotates, the scraper plate 573 can effectively scrape off the mud adhering to the inner wall of the inner filter cartridge, thereby facilitating mud and water separation.

[0076] In the mud suction mode, the drive assembly 600 needs to drive the two groups of mud scraping assemblies 500 to move synchronously in different directions. In the mud discharge mode, the mud scraping assemblies 500 need not rotate, while the drive assembly 600 needs to rotate synchronously in the same direction, so as to drive the gear ring to rotate at two points. To solve the above problems, the following solution is given:

[0077] As a 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 side wall of the main drive motor 610 is mounted on the surface of the end plate 440 through a side bracket 611. The first driven component 620 and the second driven component 630 are symmetrically arranged on both sides of the material tube 430. The main drive motor 610 is arranged vertically and the bottom end is connected to the top of the first driven component 620. The bottom end of the first driven component 620 is engaged and connected to a group of scraping assemblies 500. The bottom end of the second driven component 630 is engaged and connected to another group of scraping assemblies 500. The top of the first driven component 620 and the top of the second driven component 630 are connected by a transfer component 640. The first driven component 620, the second driven component 630 and the transfer component 640 are distributed in a triangle. The transfer component 640 can be used to adjust the working modes of the first driven component 620 and the second driven component 630 , so that the transfer component 640 can meet the driving requirements of different modes.

[0078] As a preferred embodiment, the first driven component 620 and the second driven component 630 adopt the same structure. The first driven component 620 includes a first gear 622, a second rotating shaft 621 and a second bevel gear 623. The second rotating shaft 621 is vertically rotated and placed in the end plate 440. The top of the second rotating shaft 621 is connected to the main drive motor 610. The outer wall of the bottom end of the second rotating shaft 621 is provided with a first gear 622, and the bottom end of the second rotating shaft 621 is vertically provided with a second bevel gear 623. The first gear 622 is located above the second bevel gear 623; in the mud suction mode, the second bevel gear 623 is vertically meshed with the first bevel gear 560; in the mud discharge mode, the first rotating shaft 550 and the second rotating shaft 621 are located on the same central axis, the first bevel gear 560 is disengaged from the second bevel gear 623, and the first gear 622 is meshed on the inner wall of the gear ring 341. The main drive motor 610 can drive the second rotating shaft 621 to rotate, and 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 engage vertically with the first bevel gear 560, thereby realizing the drive of the mud scraper assembly 500, and the first gear 622 is used to engage with the gear ring 341 of the inner filter cartridge 340, thereby realizing the dual-point drive of the inner filter cartridge 340.

[0079] As a preferred embodiment, the transfer component 640 includes a first pulley 641, a third rotating shaft 642, a second pulley 644 and a steering switching component 650. The outer wall of the second rotating shaft 621 is provided with a first pulley 641, and the third rotating shaft 642 is rotatably placed on the surface of the end plate 440. The top of the second driven component 630 is provided with a second pulley 644, and the bottom of the outer wall of the third rotating shaft 642 is provided with a third pulley and a second gear 643. 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 with the The third gear 647 is connected, and the third gear 647 is installed on the 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 the steering switching component 650 through the second transmission belt 646. In the mud suction mode, the steering switching component 650 is assembled on the third gear 647, so that the first driven component 620 and the second driven component 630 rotate synchronously in opposite directions. In the mud discharge mode, the steering switching component 650 is assembled on the second gear 643, so that the first driven component 620 and the second driven component 630 rotate synchronously in the same direction.

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

[0081] When the multi-prism plug-in is inserted into the slot, anti-rotation plugging can be achieved, and then the second locking bolt is screwed into the screw hole to fix the plug-in on the third gear or the fourth shaft.

[0082] In order to improve the pushing efficiency, the following solution is given: a base 311 is provided at one end of the surface of the base 310, and the surface of the base 311 is in an inclined state with the outside higher and the inside lower. The outer cylinder 330 is installed on the base 311, and the outer end of the base 310 is symmetrically provided with side panels 312. The bottom outer end of the base 311 is rotated and placed between the two groups of side panels 312. The bottom surface of the base 311 is hinged with a second drive rod 320; the other end of the second drive rod is hinged to the base.

[0083] 1. The base 311 is designed to be high outside and low inside during operation. In this way, during centrifugal motion, muddy water will mainly gather in the lower part of the centrifugal cylinder instead of gathering in large quantities at the inlet, thus preventing the liquid from flowing back through the material pipe 430 and making the discharge of the material pipe 430 smoother.

[0084] 2. When discharging the mud in the inner filter cartridge 340, the second driving rod 320 drives the inner filter cartridge 340 to rotate upward to tilt downward, so that the mud pushed out can fall fully under the action of gravity, which is also convenient for workers to perform secondary flushing.

[0085] Because the end plate 440 is heavy, manual lifting is quite labor-intensive. To address this issue, the following solution is proposed: the end plate 440 in the sludge suction mode is mounted on a guide trolley 700. The guide trolley 700 includes a support frame 710, within which the end plate 440 is mounted. Roller racks 720 are symmetrically provided on both sides of the support frame 710. During use, the guide trolley 700 can also be configured, and workers can insert the end plate 440 upside down into the support frame 710. In this way, when the end plate 440 is pushed, the support frame 710 and the roller racks 720 can be moved, making the operation smoother.

[0086] refer to Figure 13 and 15 In order to increase the mud flushing effect, a first liquid guide hole 551 is opened inside the first rotating shaft 530. One end of the first liquid guide hole is provided with a rotating joint 552, and the other end is connected to the liquid spray hole 571. The liquid spray hole runs through the left end of the first rotating shaft and is used to flush and cut the mud in front of it (refer to Figure 15 ), a through-hole 511 for a water supply connector is formed inside the hanging plate 510, and the water connector 800 is connected to the rotating connector 552. When collecting mud and water, the scraper is rotated to a horizontal position, which aligns with the through-hole of the rotating connector. The worker can then screw the water connector through the through-hole into the rotating connector to connect the scraper with water.

[0087] When the present invention is specifically implemented:

[0088] S1. Collection of mud and water on construction site:

[0089] Several workers push the multiple sets of mobile temporary storage boxes 410 and rotate the rotating block 530 to adjust the two sets of scrapers 570 to be parallel to the end plate 440. The first bevel gear 560 and the second bevel gear 623 are vertically meshed. The first locking bolt 540 is tightened and the end plate 440 is inserted into the support frame 710. The two sets of scrapers 570 are placed in the front of the moving direction. The insertion post 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, and the second rotating shaft 621 drives the second bevel gear 623 to rotate, and the second bevel gear 623 drives the first bevel gear 560 to rotate, thereby driving the first rotating shaft 550 and the 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, and the second gear 643 drives the third gear 647 to rotate, thereby driving the upper plug post 651 to rotate, and the fourth pulley 655 at the top of the plug post 651 drives the second pulley 644 to rotate through the second transmission belt 646, thereby driving the second driven component 630 to rotate, thereby achieving synchronous and unidirectional rotation of the two sets of scrapers 570;

[0091] The operator pushes the material pipe, and the guide trolley assists in supporting and guiding it. The spray holes spray water to flush the mud in advance. The scrapers 570 rotate synchronously in opposite directions to gather the mud. The material pipe 430 moves forward to contact the mud. The liquid inlet pump 412 pumps out the mud and discharges it to the top of the filter plate 411. The filter plate 411 filters the mud, and the mud and water are temporarily stored in the mobile temporary storage box 410.

[0092] S2. Mud transfer

[0093] After the mobile temporary storage box 410 is full, it is moved to the 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 docks the end plate 440 on the assembly ring 332, inserts the positioning column 441 into the second positioning hole 333, and engages the first gear 622 with the gear ring 341. The material pipe 430 extends into the inner filter cartridge 340, and the scraper 570 contacts the inner wall of the inner filter cartridge 340.

[0094] When the mud scraper assembly 500 is rotated and adjusted, the first bevel gear 560 is engaged with the second bevel gear 623, and the plug is transferred and inserted into the slot of the third rotating shaft;

[0095] The main drive motor 610 drives the second rotating shaft 621 to rotate, thereby driving the second driven component 630 to rotate synchronously in the same direction. The two sets of first gears 622 rotate to drive the gear ring 341 and the inner filter cartridge 340. The drainage pump 413 pumps the slurry into the inner filter cartridge 340, which undergoes centrifugal dehydration. The scraper 570 scrapes 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 driving rod 320 drives the base 311 to rotate and tilt, and the first driving rod 352 drives the push plate 353 to push out the mud in the inner filter cartridge 340;

[0097] S3, the sedimentation tank 100 performs a sedimentation on the muddy water, and then the upper liquid is output to the flocculation tank 200, and flocculant is added to make the muddy water flocculate and settle in the flocculation tank 200, and finally the clean water on the upper layer of the flocculation tank 200 is discharged. Each driving 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 embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A multi-stage treatment device for construction site wastewater, characterized in that: include: A sedimentation tank, which is used to carry out primary sedimentation of muddy water; A flocculation tank is connected to the output end of the sedimentation tank and is used to flocculate and sediment the muddy water; The centrifugal unit includes a base, an outer cylinder and an inner filter cartridge. The base is installed on the top of the sedimentation box. The top of the base is hinged with an outer cylinder arranged obliquely. The bottom of the outer cylinder is provided with a discharge hole, and the outer end surface of the outer cylinder is provided with a mounting ring. The inner filter cartridge is coaxially mounted inside the outer cylinder. The end of the inner filter cartridge extends outward through the mounting hole. A drainage cavity is left between the inner filter cartridge and the outer cylinder. Both ends of the inner filter cartridge are open structures. The outer end surface of the inner filter cartridge is provided with a gear ring, and a pusher assembly is installed at the inner end. The inner filter cartridge is used for centrifugal rotation to separate mud and water, and the pusher assembly is used to push out mud blocks in the inner filter cartridge. The mobile temporary storage unit includes a mobile temporary storage box, a hose, a material pipe, an end plate, a drive assembly, and a mud scraping assembly. A filter plate is provided on the top of the mobile temporary storage box. A liquid inlet pump is installed on the top of the outer wall of the mobile temporary storage box, and a liquid discharge pump is installed on the bottom of the outer wall. The liquid inlet pump and the liquid discharge pump are connected to the hose in parallel. The end of the hose is assembled and connected to the material pipe. The material pipe is installed at the center of the end plate. The drive assembly is installed on the surface of the end plate. The mud scraping assembly is symmetrically installed on the bottom surface of the end plate. The material pipe passes through the end plate and extends between the two groups of mud scraping assemblies. The mobile temporary storage unit includes the following working modes: In the sludge suction mode, two sets of sludge scraping assemblies are vertically distributed with the material pipe. The driving assembly drives the two sets of sludge scraping assemblies to rotate synchronously in opposite directions to gather the sludge inward to the material pipe. The material pipe sucks the mud and water to the mobile temporary storage box. In the mud discharge mode, two sets of scraper assemblies are distributed parallel to the material pipe and unlocked with the drive assembly. The end plate is docked at the assembly ring. The scraper assembly is inserted into the inner filter cartridge. The drive assembly drives the inner filter cartridge to rotate at two points. The material pipe is pulled out to move the mud and water in the temporary storage box to the inner filter cartridge. The scraper assembly scrapes off the sludge attached to the inner wall of the inner filter cartridge.

2. A multi-stage construction site wastewater treatment device according to claim 1, characterized in that: The bottom surface of the end plate is provided with first positioning holes distributed in a circular array, and the interior of the assembly ring is provided with second positioning holes, and the first positioning holes and the second positioning holes are positioned by pins or bolts.

3. The multi-stage construction site wastewater treatment device according to claim 2, characterized in that: The pushing assembly includes a fixing frame, and first driving rods are symmetrically arranged inside the fixing frame. The output ends of the two groups of first driving rods are connected to push plates, and the push plates are slidably embedded in the inner filter cartridge.

4. The multi-stage construction site wastewater treatment device according to claim 3, characterized in that: The scraper assembly includes a hanging plate, and the side walls of the bottom end of the hanging plate are vertically symmetrically provided with side clamps. A rotating block is rotatably installed between the two sets of side clamps. The rotating block and the side clamps are positioned by a first locking bolt. The first rotating shaft is embedded in the internal rotation of the rotating block. The outer wall of the first rotating shaft is provided with a first bevel tooth. The first bevel tooth is located at the bottom of the side clamp. The outer wall of the first rotating shaft is provided with a scraper; the top end of the first rotating shaft is fixed in the rotating block by a third locking bolt.

5. The multi-stage construction site wastewater treatment device according to claim 4, characterized in that: The driving assembly includes a main drive motor, a first driven component, a transfer component and a second driven component. The side wall of the main drive motor is installed on the end plate surface through a side bracket. The first driven component and the second driven component are symmetrically placed on both sides of the material pipe. The main drive motor is arranged vertically and the bottom end is connected to the top of the first driven component. The bottom end of the first driven component is engaged and connected to a group of scraping components. The bottom end of the second driven component is engaged and connected to another group of scraping components. The top of the first driven component and the top of the second driven component are connected through a transfer component. The first driven component, the second driven component and the transfer component are distributed in a triangle.

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

7. The multi-stage construction site wastewater treatment device according to claim 6, characterized in that: The transmission gear is connected with the transmission gear of the first gear and the transmission gear of the second gear is connected with the transmission gear of the second gear to the transmission gear of the second gear. In the mud suction mode, the steering switching component is assembled on the third gear, so that the first driven component and the second driven component rotate synchronously in opposite directions; In the mud discharge mode, the steering switching component is assembled on the assembly plate, so that the first driven component and the second driven component rotate synchronously in the same direction.

8. The multi-stage construction site wastewater treatment device according to claim 7, characterized in that: The steering switching component includes a column, and slots are provided at the centers of the third rotating shaft and the fourth rotating shaft. Screw holes are provided on the inner bottom surfaces of the slots. The bottom end of the column is a polygonal column, and the column is inserted into the slot. A second locking bolt is spirally passed through the center of the column, and the bottom end of the second locking bolt is screwed into the screw hole. A fourth pulley is provided at the top of the column, and the second transmission belt is mounted on the fourth pulley.

9. The multi-stage construction site wastewater treatment device according to claim 8, characterized in that: 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 a position relative to the discharge hole. The surface of the base is in an inclined state with the outside higher and the inside lower. The outer cylinder is installed on the base, and side plates are symmetrically provided at the outer end of the base. The outer end of the bottom of the base is rotated and placed between the two sets of side plates, and the bottom surface of the base is hinged with a second driving rod.

10. The multi-stage construction site wastewater treatment device according to claim 9, characterized in that: The scraper is spiral-shaped, and a notch extending in a direction parallel to the first rotating shaft is provided on the whole formed by the scraper and the first rotating shaft, and a scraping plate is installed in the notch; wherein, in the mud suction mode, the scraper is removed from the notch, and the scraper rotates to suck the mud; in the mud 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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