Green construction construction wastewater treatment device and method of use thereof

Abstract

This invention discloses a green construction wastewater treatment device and its usage method in the field of green construction technology. The device includes a treatment tank, an inlet pipe, a switching component, a collection trough, and two filter screens. A moving component is located at the bottom of each filter screen, and a pressure plate and a lifting component are located above it. A cleaning component is located in the treatment tank corresponding to the position between the two filter screens. This invention controls the opening and closing of the two drain pipes by setting a flow guide platform and a switching component to switch the wastewater flow direction, allowing the filter screens on both sides to perform filtration work alternately. While one filter screen is filtering, the other filter screen can be simultaneously squeezed and cleaned, improving work efficiency. The lifting and moving components allow adjustment of the position of the pressure plate and filter screens, and the cleaning component simultaneously cleans the pressure plate and filter screens during operation, preventing filter screen clogging and excessive impurities adhering to the bottom of the pressure plate.

Description

Technical Field

[0001] This invention relates to the field of green building technology, specifically to a green building construction wastewater treatment device. Background Technology

[0002] Green building refers to the construction process that maximizes resource conservation, such as energy, land, water, and materials, while protecting the environment and reducing pollution. It aims to provide people with healthy, suitable, and efficient living spaces, and to create buildings that coexist harmoniously with nature. To achieve water conservation, construction wastewater needs to be filtered, treated, and recycled.

[0003] A green construction wastewater treatment device and its usage method are disclosed in patent application number 202310874191.3. The device includes a base mechanism, a water supply tank, and an inlet tank. The supply tank is equipped with a drive mechanism, and the base mechanism is equipped with a filter screen and a squeezing assembly. A blocking mechanism is provided between the filter screen and the squeezing assembly. When wastewater is poured into the water supply tank, the drive mechanism is activated to drive the squeezing assembly to move up and down in a circular motion within the base mechanism, generally for squeezing and filtering the wastewater.

[0004] However, when the above-mentioned device is performing the extrusion, the hole on the extrusion mechanism needs to be blocked by the blocking mechanism to stop the downward conveying of wastewater. Therefore, the filtration work needs to be paused every time the extrusion is performed, and the impurities after extrusion accumulate on the filter screen, which can easily cause the filter screen to become clogged and affect the subsequent filtration process.

[0005] Based on this, the present invention designs a green construction wastewater treatment device to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a green construction wastewater treatment device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A green construction wastewater treatment device includes a cylindrical treatment tank with an inlet pipe fixed at the top center, an outlet pipe fixed at the bottom right side, and a filter assembly fixed in the center of the inner cavity.

[0009] Drain pipes are symmetrically fixed to the lower parts of the left and right sides of the inlet pipe, and a cylindrical guide platform is provided at the bottom of the inner cavity. The top of the guide platform is inclined to one of the drain pipes. A switching shaft is fixed at the center of the bottom surface of the guide platform. The switching shaft is rotatably connected to the center of the bottom of the inlet pipe, and the bottom end extends out of the inlet pipe and is connected to a switching component. A sealing sleeve can be installed around the outer wall of the guide platform. The sealing sleeve contacts the inner wall of the inlet pipe to improve the sealing performance.

[0010] The filter assembly includes two symmetrically arranged filter screens, with movable components symmetrically connected to the bottom ends of the filter screens. The inner side of the filter screen is a straight side, and a vertical partition is fixed to the bottom of the inner side. The outer side of the filter screen is an arc-shaped side and contacts the inner wall of the treatment box.

[0011] A vertical fixed baffle is fixed at the top inner position of the filter screen in the treatment box. The two sides of the fixed baffle are symmetrically inclined towards the filter screen, and the outer end is in contact with the inner wall of the treatment box. An inclined water inlet groove is provided in the middle upper part of the fixed baffle, and the end of the drain pipe is located above the water inlet groove.

[0012] A fixed frame is provided in the treatment box below the water inlet pipe along the front-to-back direction. The switching component is located on the top of the fixed frame, and a cleaning component is provided at the bottom of the fixed frame. A collection trough is fixed in the middle of the lower part of the inner cavity of the treatment box along the front-to-back direction, and the partitions of the two filter screens are slidably connected to the two inner side walls of the collection trough.

[0013] The upper part of the inner cavity of the treatment box is equipped with pressure plates above the two filters. The top surface of the pressure plates is connected to the top surface of the treatment box through a lifting assembly, and the shape of the pressure plates is adapted to the shape of the area between the treatment box and the fixed baffle.

[0014] Preferably, the moving component includes symmetrical and vertically fixed moving shafts at both ends of the bottom of the filter screen. A drive box is fixed at the bottom of the processing box corresponding to the position of the moving shafts. A vertical guide cylinder is fixed in the middle of the top of the drive box. The moving shafts are slidably connected in the guide cylinder, and the bottom end extends into the drive box and is fixed with a spring plate. The top of the spring plate is connected to the top of the drive box through a spring, and a cam is provided at the bottom of the spring plate. The cam is connected to a motor.

[0015] Preferably, the lifting assembly includes screws symmetrically fixed on both sides of the top surface of the pressure plate, a threaded cylinder rotatably connected to the top of the processing box corresponding to the position of the screws, and the screws threadedly connected to the threaded cylinder, a first gear fixed on the threaded cylinder, a first gear ring meshing between the two first gears, a circular boss fixed on the top surface of the inner cavity of the processing box corresponding to the position of the first gear ring, and the first gear ring rotatably connected to the circular boss, a first drive gear meshing on one side of the first gear, a motor connected to the first drive gear, and the motor fixedly connected to the top surface of the processing box.

[0016] Preferably, the switching assembly includes a switching gear fixed to the bottom end of the switching shaft, a rack meshing with one side of the switching gear, two limiting plates symmetrically fixed to the top of the fixing frame, the rack passing through the two limiting plates and slidingly connected to the limiting plates, and end plates symmetrically fixed to both ends of the rack, the end plates being connected to the corresponding limiting plates by springs, and a first electromagnet and a second electromagnet respectively fixed at corresponding positions on the end plates and the limiting plates, the first electromagnet and the second electromagnet being electrically connected to a power source and a switch.

[0017] Preferably, the cleaning assembly includes a fixed cylinder fixed to the middle of the bottom of the fixed frame, a rotating shaft rotatably connected in the fixed cylinder, a second gear fixed to the upper part of the rotating shaft, a second drive gear meshing on one side of the second gear, a motor connected to the second drive gear, and the motor fixedly connected to the fixed frame, and a scraper fixed to the bottom side of the rotating shaft, the end of the scraper contacting the inner side wall of the processing box.

[0018] Preferably, an annular platform is fixed to the lower part of the side wall of the rotating shaft, and the rotating shaft located below the annular platform is provided with threads and multiple vertical guide grooves are evenly provided along the circumferential direction. A vertical sleeve is fixed to the inner end of the scraper, and multiple guide blocks are correspondingly fixed on the inner side wall of the sleeve. The sleeve is sleeved on the lower part of the rotating shaft, the guide blocks are located in the corresponding guide grooves, and a threaded ring seat is threaded to the bottom of the rotating shaft.

[0019] Preferably, the top and bottom of the scraper are symmetrically provided with horizontal spring grooves, and each spring groove is connected to a brush rod by a plurality of springs evenly arranged, and the outer surface of the brush rod is evenly covered with bristles.

[0020] Preferably, two support blocks are provided in the middle of the left side wall and the middle of the right side wall of the processing box. The outer ends of the support blocks extend out of the processing box and are connected to an electric telescopic rod. The electric telescopic rod is connected to the outer side wall of the processing box through a bracket.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. This invention controls the opening and closing states of two drain pipes by setting a flow guide platform and a switching component, so as to switch the flow direction of wastewater when it enters the inlet pipe and is discharged outward, so that the filter screens on both sides can filter in turn, and the fixed baffle can block the flow and make impurities and waste accumulate on the filter screen.

[0023] 2. This invention sets up two filter screens so that when one filter screen is filtering, the other filter screen can be squeezed and cleaned at the same time, so that the wastewater filtration work can be carried out without stopping during the cleaning work, thus improving work efficiency.

[0024] 3. By setting up a lifting component and a moving component, the present invention can adjust the position of the pressure plate and the filter screen, and when the cleaning component is working, the cleaning component can clean the pressure plate and the filter screen at the same time, so as to avoid the filter screen from being blocked and too much impurity adhering to the bottom of the pressure plate.

[0025] 4. The present invention provides a vertical partition on the inner side of the filter screen, which can move along the inner wall of the collection trough, so as to prevent wastewater from entering the collection trough during filtration, and to ensure that the material can fall smoothly into the collection trough when cleaning and discharging the pressure plate and filter screen. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure at point A of the present invention;

[0029] Figure 3 This is a schematic diagram of the top structure of the fixing frame of the present invention;

[0030] Figure 4 This is a schematic diagram of the bottom structure of the rotating shaft of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the second gear of the present invention;

[0032] Figure 6 This is a schematic diagram of the internal structure of the scraper plate of the present invention;

[0033] Figure 7 This is a schematic diagram of the top structure of the pressure plate of the present invention;

[0034] Figure 8 This is a schematic diagram of the structure of the fixed baffle of the present invention;

[0035] Figure 9 This is a schematic diagram of the internal structure of the drive box of the present invention;

[0036] Figure 10 This is a schematic diagram showing the position of the support block of the present invention.

[0037] The attached diagram lists the components represented by each number as follows:

[0038] 100-Processing box, 101-Water inlet pipe, 102-Circular boss, 103-Fixed baffle, 104-Collection trough, 105-Water outlet pipe, 106-Drainage pipe, 107-Water inlet trough, 108-Support block, 109-Electric telescopic rod;

[0039] 200-Pressure plate, 201-Threaded cylinder, 202-Screw, 203-First gear, 204-First gear ring, 205-First drive gear;

[0040] 300-Filter screen, 301-Baffle plate, 302-Moving shaft, 303-Drive box, 304-Spring plate, 305-Cam, 306-Guide cylinder;

[0041] 400-Flow guide table, 401-Switching shaft, 402-Switching gear, 403-Rack, 404-End plate, 405-First electromagnet;

[0042] 500-Fixed frame, 501-Fixed cylinder, 502-Limiting plate, 503-Second electromagnet;

[0043] 600-Rotating shaft, 601-Second gear, 602-Second drive gear, 603-Scraper, 604-Sleeve, 605-Guide block, 606-Threaded ring seat, 607-Guide groove, 608-Annular platform, 609-Brush rod. Detailed Implementation

[0044] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. 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.

[0045] Example 1

[0046] Please refer to the accompanying drawings. This invention provides a technical solution:

[0047] A green construction wastewater treatment device includes a cylindrical treatment tank 100. An inlet pipe 101 is fixed to the top center of the treatment tank 100, an outlet pipe 105 is fixed to the bottom right side, and a filter assembly is fixed in the middle of the inner cavity.

[0048] Drain pipes 106 are symmetrically fixed to the lower left and right sides of the water inlet pipe 101, and a cylindrical guide platform 400 is provided at the bottom of the inner cavity. The top surface of the guide platform 400 is inclined to one of the drain pipes 106. A switching shaft 401 is fixed at the center of the bottom surface of the guide platform 400. The switching shaft 401 is rotatably connected to the center of the bottom of the water inlet pipe 101, and the bottom end extends out of the water inlet pipe 101 and is connected to a switching assembly. A sealing sleeve can be set around the outer wall of the guide platform 400. The sealing sleeve contacts the inner wall of the water inlet pipe 101 to improve the sealing performance.

[0049] The filter assembly includes two symmetrically arranged filter screens 300, and movable components are symmetrically connected to the bottom ends of the filter screens 300. The inner side of the filter screen 300 is a straight side, and a vertical partition 301 is fixed at the bottom of the inner side. The outer side of the filter screen 300 is an arc-shaped side and contacts the inner wall of the treatment box 100.

[0050] A vertical fixed baffle 103 is fixed in the treatment box 100 at the top inner position corresponding to the filter screen 300. The two sides of the fixed baffle 103 are symmetrically inclined towards the filter screen 300, and the outer end is in contact with the inner wall of the treatment box 100. An inclined water inlet trough 107 is provided in the middle upper part of the fixed baffle 103, and the end of the drain pipe 106 is located above the water inlet trough 107.

[0051] A fixing frame 500 is provided in the treatment box 100 below the water inlet pipe 101 along the front-back direction. The switching component is located on the top of the fixing frame 500, and a cleaning component is provided at the bottom of the fixing frame 500. A collection trough 104 is fixed in the middle of the lower part of the inner cavity of the treatment box 100 along the front-back direction, and the partitions 301 of the two filter screens 300 are slidably connected to the two inner side walls of the collection trough 104 respectively.

[0052] The upper part of the inner cavity of the treatment box 100 is provided with pressure plates 200 above the two filters 300. The top surface of the pressure plates 200 is connected to the top surface of the treatment box 100 through a lifting assembly, and the shape of the pressure plates 200 is adapted to the shape of the area between the treatment box 100 and the fixed baffle 103.

[0053] During filtration, wastewater enters the inlet pipe 101 through an external conveying device and flows to the drain pipe 106 on the left side through the inclined top of the guide platform 400. The guide platform 400 also closes the drain pipe 106 on the right side. The wastewater discharged from the drain pipe 106 falls onto the filter screen 300 on the left side through the inlet trough 107 on the fixed baffle 103. The fixed baffle 103 acts as a barrier, thus filtering the wastewater through the filter screen 300 and causing impurities and waste materials to accumulate on the filter screen 300.

[0054] When a lot of impurities and waste accumulate on the filter screen 300 on the left, the switching assembly causes the switching shaft 401 to rotate the guide platform 400. As a result, the guide platform 400 closes the drain pipe 106 on the left and opens the drain pipe 106 on the right, so that the filter screen 300 on the right can perform the filtration work.

[0055] At the same time, the lifting component on the left moves the pressure plate 200 down to squeeze and dehydrate the impurities and waste on the filter screen 300. Then, the filter screen 300 and the pressure plate 200 are moved down by the moving component and the lifting component respectively, so that the positions of the pressure plate 200 and the filter screen 300 correspond to the upper and lower sides of the cleaning component. Thus, the cleaning component scrapes and cleans the top of the filter screen 300 and the bottom of the pressure plate 200, and moves the material into the collection trough 104.

[0056] This application, by setting filter screens 300 on both sides and cooperating with the operation of the water inlet pipe 101, the guide platform 400, and the switching component, allows the filter screens 300 on both sides to perform filtration work in turn. While one side is performing filtration work, the other side is performing squeezing and cleaning work, so that wastewater treatment can be carried out continuously without stopping the filtration work during squeezing, thereby improving work efficiency and adding a cleaning function to avoid clogging of the filter screens 300 and excessive waste material adhering to the bottom of the pressure plate 200.

[0057] The present invention provides a vertical partition 301 on the inner side of the filter screen 300, which can move along the inner wall of the collection tank 104, so as to prevent wastewater from entering the collection tank 104 during filtration, and to ensure that the material can fall smoothly into the collection tank 104 when cleaning and unloading the pressure plate 200 and the filter screen 300.

[0058] The switching assembly includes a switching gear 402 fixed to the bottom of the switching shaft 401. A rack 403 meshes with one side of the switching gear 402. Two limiting plates 502 are symmetrically fixed to the top of the fixing frame 500. The rack 403 passes through the two limiting plates 502 and is slidably connected to the limiting plates 502. End plates 404 are symmetrically fixed to both ends of the rack 403. The end plates 404 are connected to the corresponding limiting plates 502 by springs. A first electromagnet 405 and a second electromagnet 503 are fixed at corresponding positions on the end plates 404 and the limiting plates 502, respectively. The first electromagnet 405 and the second electromagnet 503 are electrically connected to a power source and a switch.

[0059] When the guide platform 400 closes one drain pipe 106 and opens the other drain pipe 106, one end plate 404 is connected to the corresponding limit plate 502 through the action of the first electromagnet 405 and the second electromagnet 503 attracted by the energization on that side. When it is necessary to switch the position of the guide platform 400 and the opening and closing state of the two drain pipes 106, the first electromagnet 405 and the second electromagnet 503 on that side are de-energized, and the first electromagnet 405 and the second electromagnet 503 on the other side are energized and attracted by the energization, thereby causing the end plate 404 to drive the rack 403 to move, which in turn causes the switching gear 402 to drive the switching shaft 401 and the guide platform 400 to move.

[0060] The cleaning assembly includes a fixed cylinder 501 fixed to the middle of the bottom of the fixed frame 500. A rotating shaft 600 is rotatably connected to the fixed cylinder 501. A second gear 601 is fixed to the upper part of the rotating shaft 600. A second drive gear 602 meshes with one side of the second gear 601. The second drive gear 602 is connected to a motor, and the motor is fixedly connected to the fixed frame 500. A scraper 603 is fixed to the bottom side of the rotating shaft 600. The end of the scraper 603 contacts the inner wall of the processing box 100. During the cleaning operation, the pressure plate 200 and the filter screen 300 abut against the top and bottom of the scraper 603, respectively. Under the drive of the motor and the transmission action of the second drive gear 602 and the second gear 601, the rotating shaft 600 can drive the scraper 603 to rotate, and scrape and clean the pressure plate 200 and the filter screen 300 through the top and bottom of the scraper 603.

[0061] Example 2

[0062] The structure of this embodiment is basically the same as that of Embodiment 1, except that the moving component includes symmetrical and vertically fixed moving shafts 302 at both ends of the bottom of the filter screen 300. A drive box 303 is fixed at the bottom of the processing box 100 corresponding to the position of the moving shafts 302. A vertical guide cylinder 306 is fixed in the middle of the top of the drive box 303. The moving shafts 302 are slidably connected to the guide cylinder 306, and their bottom ends extend into the drive box 303 and are fixed with a spring plate 304. The top of the spring plate 304 is connected to the drive box 303 by a spring. The top of the box 303 is connected to a cam 305 at the bottom of the spring plate 304. The cam 305 is connected to a motor. When the filter screen 300 needs to be moved down, the motor drives the cam 305 to rotate, so that the spring plate 304 moves with the rotation of the cam 305 under the action of the spring. When the filter screen 300 returns to its original position, the motor drives the cam 305 to rotate back, thereby lifting the spring plate 304, which in turn causes the moving shaft 302 to drive the filter screen 300 to move up and back to its original position for the next filtration operation.

[0063] The lifting assembly includes screws 202 symmetrically fixed on both sides of the top surface of the pressure plate 200. A threaded cylinder 201 is rotatably connected to the top of the processing box 100 corresponding to the position of the screws 202, and the screws 202 are threaded into the threaded cylinder 201. A first gear 203 is fixed on the threaded cylinder 201, and a first gear ring 204 meshes between the two first gears 203. A circular boss 102 is fixed on the top surface of the inner cavity of the processing box 100 corresponding to the position of the first gear ring 204, and the first gear ring 204 is rotatably connected to the circular boss 102. A first drive gear 205 meshes on one side of the first gear 203. The first drive gear 205 is connected to a motor, and the motor is fixedly connected to the top surface of the processing box 100. When the pressure plate 200 needs to be moved, the two threaded cylinders 201 are rotated simultaneously by the drive of the motor and the first drive gear 205, as well as the transmission of the first gear 203 and the first gear ring 204. Thus, the screws 202 drive the pressure plate 200 to move through the thread action.

[0064] Example 3

[0065] The structure of this embodiment is basically the same as that of Embodiment 1. The difference is that an annular platform 608 is fixed to the lower part of the side wall of the rotating shaft 600, and the rotating shaft 600 located below the annular platform 608 is provided with threads and a plurality of vertical guide grooves 607 are evenly provided along the circumferential direction. A vertical sleeve 604 is fixed to the inner end of the scraper 603. A plurality of guide blocks 605 are correspondingly fixed on the inner side wall of the sleeve 604. The sleeve 604 is sleeved on the lower part of the rotating shaft 600, and the guide blocks 605 are located in the corresponding guide grooves 607. A threaded ring seat 606 is threadedly connected to the bottom of the rotating shaft 600, so that the scraper 603 and the rotating shaft 600 can be detachably connected, so that the scraper 603 can be disassembled and maintained.

[0066] Example 4

[0067] The structure of this embodiment is basically the same as that of Embodiment 1. The difference is that the top and bottom of the scraper plate 603 are symmetrically provided with horizontal spring grooves. Each spring groove is connected to a brush rod 609 by a plurality of springs that are evenly arranged. The outer surface of the brush rod 609 is evenly covered with bristles so that when the scraper plate 603 cleans the pressure plate 200 and the filter screen 300, the bristles on the brush rod 609 will contact the pressure plate 200 and the filter screen 300 under the action of the springs, thereby improving the cleaning effect.

[0068] Example 5

[0069] The structure of this embodiment is basically the same as that of Embodiment 1. The difference is that two support blocks 108 are provided in the middle of the left side wall and the middle of the right side wall of the processing box 100. The positions of the two support blocks 108 on each side correspond to the positions of the filter screen 300 during filtration and cleaning, respectively. The outer ends of the support blocks 108 extend out of the processing box 100 and are connected to an electric telescopic rod 109. The electric telescopic rod 109 is connected to the outer side wall of the processing box 100 through a bracket so that when the filter screen 300 is working, the corresponding support block 108 can be moved by the electric telescopic rod 109 and protrude out of the inner side wall of the processing box 100 and contact the bottom side of the filter screen 300 to provide support for the filter screen 300 and improve the positional stability of the filter screen 300.

[0070] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0071] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A green construction wastewater treatment device, comprising a cylindrical treatment tank (100), an inlet pipe (101) fixed at the top center of the treatment tank (100), an outlet pipe (105) fixed at the bottom right side, and a filter assembly fixed in the middle of the inner cavity, characterized in that: The lower left and right sides of the water inlet pipe (101) are symmetrically fixed with drain pipes (106), and the bottom of the inner cavity is provided with a cylindrical guide platform (400). The top surface of the guide platform (400) is inclined to one of the drain pipes (106). A switching shaft (401) is fixed at the center of the bottom surface of the guide platform (400). The switching shaft (401) is rotatably connected to the center of the bottom of the water inlet pipe (101), and the bottom end extends out of the water inlet pipe (101) and is connected to a switching component. The filter assembly includes two symmetrically arranged filter screens (300), and the bottom ends of the filter screens (300) are symmetrically connected with movable components. The inner side of the filter screen (300) is a straight side, and a vertical partition (301) is fixed at the bottom of the inner side. The outer side of the filter screen (300) is an arc-shaped side and contacts the inner wall of the processing box (100). A vertical fixed baffle (103) is fixed on the inner side of the top of the filter screen (300) in the processing box (100). The two sides of the fixed baffle (103) are symmetrically inclined towards the filter screen (300), and the outer end is in contact with the inner wall of the processing box (100). An inclined water inlet trough (107) is provided in the upper middle part of the fixed baffle (103), and the end of the drain pipe (106) is located above the water inlet trough (107). The processing box (100) has a fixed frame (500) located below the water inlet pipe (101) along the front-back direction. The switching component is located on the top of the fixed frame (500), and a cleaning component is located at the bottom of the fixed frame (500). A collection trough (104) is fixed in the middle of the lower part of the inner cavity of the processing box (100) along the front-back direction, and the partitions (301) of the two filter screens (300) are slidably connected to the two inner side walls of the collection trough (104). The upper part of the inner cavity of the processing box (100) is provided with a pressure plate (200) above the two filters (300). The top surface of the pressure plate (200) is connected to the top surface of the processing box (100) through a lifting assembly, and the shape of the pressure plate (200) is adapted to the shape of the area between the processing box (100) and the fixed baffle (103).

2. The green construction site wastewater treatment device of claim 1, wherein: The moving component includes symmetrical and vertically fixed moving shafts (302) at both ends of the bottom of the filter screen (300). A drive box (303) is fixed at the bottom of the processing box (100) corresponding to the position of the moving shafts (302). A vertical guide cylinder (306) is fixed in the middle of the top of the drive box (303). The moving shafts (302) are slidably connected in the guide cylinder (306) and the bottom end extends into the drive box (303) and is fixed with a spring plate (304). The top of the spring plate (304) is connected to the top of the drive box (303) through a spring. A cam (305) is provided at the bottom of the spring plate (304) and the cam (305) is connected to a motor.

3. The green construction wastewater treatment device according to claim 1, characterized in that: The lifting assembly includes screws (202) symmetrically fixed on both sides of the top surface of the pressure plate (200). A threaded cylinder (201) is rotatably connected to the top of the processing box (100) corresponding to the position of the screws (202), and the screws (202) are threadedly connected to the threaded cylinder (201). A first gear (203) is fixed on the threaded cylinder (201), and a first gear ring (204) meshes between the two first gears (203). A circular boss (102) is fixed on the top surface of the inner cavity of the processing box (100) corresponding to the position of the first gear ring (204), and the first gear ring (204) is rotatably connected to the circular boss (102). A first drive gear (205) meshes on one side of the first gear (203), and a motor is connected to the first drive gear (205), and the motor is fixedly connected to the top surface of the processing box (100).

4. The green construction wastewater treatment device according to claim 1, characterized in that: The switching assembly includes a switching gear (402) fixed to the bottom of the switching shaft (401). A rack (403) meshes with one side of the switching gear (402). Two limiting plates (502) are symmetrically fixed to the top of the fixing frame (500). The rack (403) passes through the two limiting plates (502) and is slidably connected to the limiting plates (502). End plates (404) are symmetrically fixed to both ends of the rack (403). The end plates (404) are connected to the corresponding limiting plates (502) by springs. A first electromagnet (405) and a second electromagnet (503) are fixed at corresponding positions on the end plates (404) and the limiting plates (502). The first electromagnet (405) and the second electromagnet (503) are electrically connected to a power source and a switch.

5. The green construction wastewater treatment device according to claim 1, characterized in that: The cleaning assembly includes a fixed cylinder (501) fixed in the middle of the bottom of the fixed frame (500), a rotating shaft (600) rotatably connected in the fixed cylinder (501), a second gear (601) fixed on the upper part of the rotating shaft (600), a second drive gear (602) meshing on one side of the second gear (601), a motor connected to the second drive gear (602), and the motor fixedly connected to the fixed frame (500). A scraper (603) is fixed on one side of the bottom of the rotating shaft (600), and the end of the scraper (603) contacts the inner wall of the processing box (100).

6. The green construction wastewater treatment device according to claim 5, characterized in that: The lower part of the side wall of the rotating shaft (600) is fixed with an annular platform (608), and the rotating shaft (600) located below the annular platform (608) is provided with a thread, and a plurality of vertical guide grooves (607) are evenly provided along the circumferential direction. The inner end of the scraper (603) is fixed with a vertical sleeve (604), and a plurality of guide blocks (605) are correspondingly fixed on the inner side wall of the sleeve (604). The sleeve (604) is sleeved on the lower part of the rotating shaft (600), the guide blocks (605) are located in the corresponding guide grooves (607), and the bottom of the rotating shaft (600) is threadedly connected with a threaded ring seat (606).

7. The green construction wastewater treatment device according to claim 5, characterized in that: The scraper (603) has horizontal spring grooves symmetrically arranged at the top and bottom. Each spring groove is connected to a brush rod (609) by a plurality of springs evenly arranged, and the outer surface of the brush rod (609) is evenly covered with bristles.

8. The green construction wastewater treatment device according to any one of claims 1 to 7, characterized in that: The processing box (100) has two support blocks (108) in the middle of the left side wall and the middle of the right side wall. The outer ends of the support blocks (108) extend out of the processing box (100) and are connected to an electric telescopic rod (109). The electric telescopic rod (109) is connected to the outer side wall of the processing box (100) through a bracket.

9. The method of using the green construction wastewater treatment device according to claim 7, characterized in that: During filtration, wastewater is introduced into the inlet pipe (101) through an external conveying device and flows to the drain pipe (106) on the left side through the inclined top surface of the guide platform (400). The guide platform (400) also closes the drain pipe (106) on the right side. The wastewater discharged from the drain pipe (106) falls onto the filter screen (300) on the left side through the inlet trough (107) on the fixed baffle (103). The fixed baffle (103) acts as a barrier, thereby filtering the wastewater through the filter screen (300) and causing impurities and waste to accumulate on the filter screen (300). When a lot of impurities and waste accumulate on the filter screen (300) on the left, the switching shaft (401) is driven by the switching component to rotate the guide platform (400). Thus, through the action of the guide platform (400), the left drain pipe (106) is closed and the right drain pipe (106) is opened, so that the filter screen (300) on the right can perform the filtering work. At the same time, the lifting component on the left side drives the pressure plate (200) to move down, squeezing and dewatering the impurities and waste on the filter screen (300). Then the filter screen (300) and the pressure plate (200) move down through the driving of the moving component and the lifting component, so that the positions of the filter screen (300) and the pressure plate (200) correspond to the upper and lower sides of the cleaning component, so that the cleaning component scrapes and cleans the top of the filter screen (300) and the bottom of the pressure plate (200), and moves the material into the collection trough (104). By setting up filter screens (300) on both sides and cooperating with the operation of the inlet pipe (101), the guide platform (400), and the switching component, the filter screens (300) on both sides can perform filtration work in turn. While one side is performing filtration work, the other side is performing squeezing and cleaning work, so that wastewater treatment can be carried out continuously without stopping the filtration work during squeezing, thereby improving work efficiency and increasing the cleaning function to avoid clogging of the filter screens (300) and excessive waste adhering to the bottom of the pressure plate (200).

10. The method of using the green construction wastewater treatment device according to claim 9, characterized in that: By setting a vertical baffle (301) inside the filter screen (300) and being able to move along the inner wall of the collection trough (104), wastewater is prevented from entering the collection trough (104) during filtration, and the material is ensured to fall smoothly into the collection trough (104) when cleaning and discharging the pressure plate (200) and the filter screen (300); The switching assembly includes a switching gear (402) fixed to the bottom of the switching shaft (401), a rack (403) meshing on one side of the switching gear (402), two limiting plates (502) symmetrically fixed to the top of the fixing frame (500), the rack (403) passing through the two limiting plates (502) and slidingly connected to the limiting plates (502), and end plates (404) symmetrically fixed at both ends of the rack (403), the end plates (404) being connected to the corresponding limiting plates (502) by springs, and a first electromagnet (405) and a second electromagnet (503) fixed at corresponding positions on the end plates (404) and the limiting plates (502), respectively, and the first electromagnet (405) and the second electromagnet (503) being electrically connected to a power source and a switch; When the guide platform (400) closes one side of the drain pipe (106) and opens the other side of the drain pipe (106), one end plate (404) is connected to the corresponding side limit plate (502) through the action of the first electromagnet (405) and the second electromagnet (503) attracted by the energization of the end plate side. When it is necessary to switch the position of the guide platform (400) and the opening and closing state of the two drain pipes (106), the first electromagnet (405) and the second electromagnet (503) that are currently energized are de-energized, and the first electromagnet (405) and the second electromagnet (503) on the other side are energized and attracted by the energization, so that the end plate (404) drives the rack (403) to move, and then the switching gear (402) drives the switching shaft (401) and the guide platform (400) to move. The cleaning assembly includes a fixed cylinder (501) fixed to the middle of the bottom of a fixed frame (500). A rotating shaft (600) is rotatably connected to the fixed cylinder (501). A second gear (601) is fixed to the upper part of the rotating shaft (600). A second drive gear (602) meshes with one side of the second gear (601). The second drive gear (602) is connected to a motor, and the motor is fixedly connected to the fixed frame (500). A scraper (603) is fixed to one side of the bottom of the rotating shaft (600). The end of the plate (603) is in contact with the inner wall of the processing box (100), and during the cleaning operation, the pressure plate (200) and the filter screen (300) are respectively in contact with the top and bottom of the scraper plate (603) so that under the drive of the motor and the transmission of the second drive gear (602) and the second gear (601), the rotating shaft (600) can drive the scraper plate (603) to rotate, and scrape and clean the pressure plate (200) and the filter screen (300) through the top and bottom of the scraper plate (603).

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