Multi-stage sewage treatment device for hydraulic engineering

Abstract

Belonging to the technical field of water conservancy project sewage treatment, the invention relates to a multi-stage sewage treatment device for water conservancy project, which comprises a treatment box, a partition plate, a water inlet pipe, a feeding pipe, an adjustable filter assembly, a scraping assembly, a conveying assembly, a post-treatment assembly and a water outlet pipe, the water inlet pipe and the feeding pipe are both fixedly installed on one side of the upper end of the treatment box, the adjustable filtering assembly and the scraping assembly are installed in the filtering cavity, the conveying assembly is installed in the conveying cavity, the post-treatment assembly is installed in the post-treatment cavity, and the water outlet pipe is fixedly installed at the lower end of one side of the outer portion of the treatment box. The adjustable filtering assembly can adjust the filtering degree according to the types of sewage, operation is convenient, the effect is improved, meanwhile, impurities can be pushed to be conveniently collected through the scraping assembly, the mixing rate of sewage and chemicals can be improved, impurity collection is completed, sewage is prevented from entering a sewage storage box, an activated carbon adsorption plate can be conveniently replaced through the post-treatment assembly, and the treatment efficiency is improved. And a user can use the device conveniently.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water conservancy sewage treatment, in particular to a multi-stage sewage treatment device for water conservancy. BACKGROUND

[0002] Water conservancy is an engineering for controlling and regulating surface water and groundwater in nature to achieve the purpose of eliminating harm and promoting benefits, covering flood control, irrigation, power generation, water supply, navigation and many other fields, and plays a key role in ensuring national water security and promoting economic and social development. In the process of water conservancy operation, a large amount of sewage will be generated. If it is directly discharged without treatment, it will seriously pollute the surrounding water environment, destroy the ecological balance and affect the normal play of the water conservancy function. Effective sewage treatment has significant advantages in water conservancy, not only can reduce the pollution of sewage to natural water bodies, protect water resources and ecological environment, but also can realize the recycling of water resources, improve the utilization efficiency of water resources and alleviate the problem of water shortage.

[0003] After searching, the existing technology with publication number CN221917577U is a sewage multi-stage treatment device for water conservancy. After the sewage is filtered by the filter screen, the sundries in the sewage are left on the filter screen and slide out of the box along the slope. However, in this process, part of the sundries will be stuck on the filter screen, making it difficult to collect them. To solve this problem, the following scheme is proposed. It includes a treatment box, a treatment motor fixedly installed on the top of the treatment box, an adsorption plate provided in the treatment box, a first waterproof seat fixedly installed on the top of the adsorption plate, a vibration mechanism provided on the first waterproof seat, the vibration mechanism including a driving assembly and a knocking assembly, a second waterproof seat fixedly installed on the bottom of the adsorption plate, and the like. The utility model has the advantages of simple structure, knocking of the filter screen plate, vibration caused by the knocking, sliding of the sundries on the filter screen plate into the collection box, easy collection of the sundries, and convenient use for people.

[0004] Another publication number: CN215208792U, a sewage multi-stage treatment device for water conservancy, the technical scheme is: including a shell and an inlet pipe fixedly and communicatively arranged on the top of the shell, further including: guide plates fixedly and symmetrically installed on the top of the shell; the guide plates are used to guide the flow direction of the sewage entering the shell; a V-shaped filter screen fixedly installed on the upper part of the shell; the V-shaped filter screen is used to filter the sewage; and scraping mechanisms symmetrically and rotatably installed in the top of the shell; the scraping mechanisms are in movable abutment with the guide plates and the V-shaped filter screen. The utility model device can avoid the blocking phenomenon of the V-shaped filter screen by the following process: after the sewage flows into the shell, it is guided by the guide plates to flow onto the scraping mechanisms, the sewage drives the scraping mechanisms to rotate, and the rotation of the scraping mechanisms can scrape the impurities on the V-shaped filter screen.

[0005] However, most existing sewage treatment devices can only perform one function. During sewage treatment, sewage is usually transferred, which affects the sewage treatment efficiency. In addition, the types of impurities in sewage from different causes are different, and users need to replace the filter plates during treatment, which is cumbersome. In view of this, the present invention is proposed. Summary of the Invention

[0006] To overcome the technical defects of the existing technology, the present invention provides a multi-stage sewage treatment device for water conservancy projects, which has the technical characteristics of being able to adjust the filtration degree according to the type of sewage and being less prone to clogging.

[0007] The technical solution adopted in this invention includes a processing tank, a partition, an inlet pipe, a feeding pipe, an adjustable filter assembly, a scraping assembly, a conveying assembly, a post-treatment assembly, and an outlet pipe. The partition is fixedly installed inside the processing tank, dividing the interior into a filtration chamber, a conveying chamber, and a post-treatment chamber. The filtration chamber and the post-treatment chamber are located on opposite sides of the conveying chamber. The inlet pipe and the feeding pipe are both fixedly installed on the upper side of the processing tank and are connected to the filtration chamber. The adjustable filter assembly and the scraping assembly are installed in the filtration chamber. The conveying assembly is installed in the conveying chamber and connects the filtration chamber and the post-treatment chamber. The post-treatment assembly is installed in the post-treatment chamber. A water pipe is fixedly installed on the lower side of the outside of the treatment tank. The outlet pipe is connected to the post-treatment chamber, and a shut-off valve is fixedly installed on the outlet pipe. In use, this structure is placed at the location of use, and then sewage and chemical agents are added into the treatment tank through the inlet pipe and the feed pipe, respectively, for reaction. Subsequently, the adjustable filter assembly can filter impurities according to the type of sewage. During the filtration process, the scraping assembly can scrape off the adjustable filter assembly while agitating the sewage, thereby increasing the reaction rate and reducing the occurrence of blockage. The filtered sewage can be transported to the post-treatment chamber through the conveying assembly for adsorption and sterilization treatment by the post-treatment assembly, thereby completing the sewage treatment. The treated sewage can be discharged through the outlet pipe.

[0008] To adjust the filtration level according to the type of wastewater, thereby improving filtration efficiency and user convenience, this invention includes the following improvements: The adjustable filter assembly comprises a filter plate, an adjusting plate, locking rods, adjusting columns, a rotating rod, an anti-slip ring, a knob, and an adjusting cam. The filter plate is fixedly installed inside the treatment tank and located within the filter chamber. Locking grooves are provided at each of the four corners of the filter plate. The locking rods are fixedly installed at the four upper corners of the adjusting plate and slidably engage with the locking grooves. The adjusting plate is located below the filter plate. An array of adjusting columns is fixedly installed on the upper end of the adjusting plate. The filter plate has an array of filter holes, the shape of which... The device is shaped like a frustum. The adjusting column corresponds one-to-one with the filter hole. The anti-slip ring is fixedly installed at both ends of the rotating rod. The rotating rod is rotatably engaged inside the treatment box, and one end of the rotating rod is rotatably engaged with one side of the partition. The anti-slip ring is in close contact with the treatment box and the partition. The knob is fixedly connected to the other end of the rotating rod. The knob is located on both sides of the outside of the treatment box, and an anti-slip groove is provided on the outer side of the knob. The adjusting cam is fixedly installed at both ends of the rotating rod, and the adjusting cam is located below the adjusting plate and in contact with the adjusting plate. A water permeable groove is provided on the adjusting plate, and the water permeable groove is located on both sides of the adjusting column.

[0009] In order to enable the slider to reciprocate on the slide rail, the present invention is improved as follows: the scraping component includes a slide rail, the slide rail is fixedly installed on one side inside the processing box and is located above the adjustable filter component, a screw is rotatably engaged inside the slide rail, the two ends of the screw extend to the two sides outside the processing box, a reciprocating control motor is fixedly installed on one side outside the processing box, the output end of the reciprocating control motor is fixedly connected to one end of the screw, and a slider is slidably engaged inside the slide rail, the slider being threaded onto the screw.

[0010] In order to remove impurities from the filter plate and reduce the occurrence of filter plate clogging, the present invention is improved as follows: a scraper is fixedly installed at the lower end of the slider, a rubber scraper is fixedly installed at the lower end of the scraper, the lower end of the rubber scraper contacts the upper end of the filter plate, an mounting plate is fixedly installed at the upper end of the slider, and a stirring rod is fixedly installed in an array at the upper end of the mounting plate.

[0011] To collect the filtered impurities, the present invention includes the following improvements: a sludge outlet groove is provided on one side of the processing box, the sludge outlet groove is located on the upper side of the filter plate, the scraping assembly also includes a sludge storage box, the sludge storage box is fixedly installed on the outer side of the processing box, and the sludge storage box is located on the side of the sludge outlet groove, and slots are provided at both ends of the inner side of the sludge storage box, a sealing plate is engaged in the slots, a sealing rubber plate is fixedly installed on one side of the sealing plate, the sealing rubber plate is in close contact with the outer side of the processing box, and a handle is fixedly installed on the upper end of the sealing plate.

[0012] In order to connect the filter chamber and the post-processing chamber, the present invention is improved as follows: the conveying assembly includes a conveying cylinder, the conveying cylinder is fixedly installed inside the processing box and located inside the conveying chamber, and a conveying pipe is fixedly installed on the lower end of one side and the upper end of the other side of the conveying cylinder, and the interior of the conveying cylinder is connected to the filter chamber and the post-processing chamber through the conveying pipe.

[0013] To secure the rotating shaft, the present invention includes the following improvements: the conveying assembly further includes a top plate, with latches fixedly installed at both ends of the top plate. The top plate is secured to the upper middle position of the processing box via the latches. Handles are fixedly installed on both sides of the upper end of the top plate. Rotation grooves are formed at the middle position of the top plate and the lower middle position of the processing box. Sealing rings are fixedly installed inside the rotation grooves. The conveying assembly also includes a servo motor, which is fixedly installed at the lower middle position of the outer side of the processing box. A rotating shaft is fixedly installed at the output end of the servo motor. The rotating shaft is located inside the conveying cylinder, and both ends of the rotating shaft are in close contact with the sealing rings. A conveying auger is fixedly installed on the outer side of the rotating shaft, and a sealing strip is provided on the outer side of the conveying auger. The sealing strip is in close contact with the inner wall of the conveying cylinder.

[0014] To facilitate the adsorption and sterilization of filtered wastewater and the replacement of the activated carbon adsorption plate, the present invention includes the following improvements: The post-treatment component includes a mounting frame, which is fixedly installed inside the treatment box and located within the post-treatment chamber. Springs are fixedly installed at the four corners of one end of the mounting frame, and push plates are fixedly installed at the other ends of the springs. An activated carbon adsorption plate is slidably engaged inside the mounting frame and located on one side of the push plate. The post-treatment component also includes a door, with a hinge on one side. The door is mounted on one side of the treatment box via the hinge and is located on one side of the mounting frame. A sealing gasket is provided on the inner side of the door, which is in close contact with the treatment box. A pull button is provided on one front side of the door. Ultraviolet sterilization lamps are installed on both sides of the lower part of the mounting frame and are fixedly installed inside the post-treatment chamber.

[0015] The beneficial effects of this invention are:

[0016] 1. The knob can drive the rotating rod to rotate, which in turn drives the adjusting cam to rotate. The adjusting cam can push the adjusting plate up and down, thereby adjusting the position of the adjusting column in the filter hole. This allows the filtration level to be adjusted according to the type of wastewater, making it convenient for users to operate while improving the filtration effect. In addition, the adjusting column can push out impurities in the filter hole, making it convenient for subsequent collection of impurities.

[0017] 2. The reciprocating motor drives the screw to rotate reciprocally, which in turn drives the slider to move reciprocally in the slide rail. This allows the mounting plate and stirring rod to move reciprocally, thereby increasing the mixing rate of wastewater and chemical agents. At the same time, the scraper and rubber scraper can move reciprocally, which can transport impurities through the sludge outlet to the sludge storage box, thus completing the collection of impurities. Furthermore, during the filtration process, the sealing plate and sealing rubber plate can block the sludge outlet to prevent wastewater from entering the sludge storage box.

[0018] 3. The activated carbon adsorption plate and ultraviolet sterilization lamp can adsorb and sterilize the filtered wastewater, thus completing multi-stage wastewater treatment. At the same time, opening the door and pushing the push plate under the action of the spring can push out the activated carbon adsorption plate, making it convenient for users to replace the activated carbon adsorption plate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a half-sectional view of the overall structure of the present invention;

[0021] Figure 3 This is a half-sectional view of the processing box in this invention;

[0022] Figure 4 This is a schematic diagram showing the partial structural positional relationship between the adjustable filter component and the scraping component in this invention;

[0023] Figure 5 This is a half-sectional view of the adjustable filter component in this invention.

[0024] Figure 6 This is a partial sectional view of the scraping component in this invention;

[0025] Figure 7 This is a schematic diagram of the sludge storage box in this invention;

[0026] Figure 8 This is a half-sectional view of the conveying component in this invention;

[0027] Figure 9 This is a partial structural diagram of the post-processing component in this invention.

[0028] Explanation of reference numerals in the attached drawings: 1. Processing box; 2. Baffle plate; 3. Water inlet pipe; 4. Feeding pipe; 5. Adjustable filter assembly; 501. Filter plate; 502. Adjusting plate; 503. Clip rod; 504. Adjusting column; 505. Rotating rod; 506. Anti-slip ring; 507. Knob; 508. Adjusting cam; 509. Clip groove; 5010. Filter hole; 6. Scraping assembly; 601. Slide rail; 602. Screw; 603. Reciprocating control motor; 604. Slider; 605. Scraper; 606. Rubber scraper; 607. Mounting plate; 608. 609. Stirring rod; 6010. Sludge storage box; 6011. Sealing plate; 6012. Sealing rubber plate; 7. Conveying assembly; 701. Conveying cylinder; 702. Conveying pipe; 703. Top plate; 704. Sealing ring; 705. Servo motor; 706. Rotating shaft; 707. Conveying auger; 708. Sealing strip; 8. Post-treatment assembly; 801. Mounting frame; 802. Spring; 803. Push plate; 804. Activated carbon adsorption plate; 805. Box door; 806. Sealing gasket; 807. Ultraviolet sterilization lamp; 9. Water outlet pipe; 10. Shut-off valve; 11. Sludge outlet tank. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings:

[0030] like Figures 1-9As shown, this embodiment provides a multi-stage sewage treatment device for water conservancy projects, including a treatment tank 1, a partition 2, an inlet pipe 3, a feeding pipe 4, an adjustable filter assembly 5, a scraping assembly 6, a conveying assembly 7, a post-treatment assembly 8, and an outlet pipe 9. The partition 2 is fixedly installed inside the treatment tank 1, and the partition 2 divides the interior of the treatment tank 1 into a filter chamber, a conveying chamber, and a post-treatment chamber. The filter chamber and the post-treatment chamber are located on both sides of the conveying chamber. The inlet pipe 3 and the feeding pipe 4 are both fixedly installed on the upper side of the treatment tank 1, and the inlet pipe 3 and the feeding pipe 4 are connected to the filter chamber. The adjustable filter assembly 5 and the scraping assembly 6 are installed in the filter chamber. The conveying assembly 7 is installed in the conveying chamber, and the conveying assembly 7 connects the filter chamber and the post-treatment chamber. The post-treatment assembly 8 is installed in the post-treatment chamber. The outlet pipe 9 is fixedly installed on the lower side of the outer side of the treatment tank 1, and the outlet pipe 9 is connected to the post-treatment chamber. A shut-off valve 10 is fixedly installed on the outlet pipe 9.

[0031] The adjustable filter assembly 5 includes a filter plate 501, an adjusting plate 502, a locking rod 503, an adjusting column 504, a rotating rod 505, an anti-slip ring 506, a knob 507, and an adjusting cam 508. The filter plate 501 is fixedly installed inside the processing box 1 and is located in the filter chamber. Locking grooves 509 are provided at each of the four corners of the filter plate 501. The locking rods 503 are fixedly installed at the four corners of the upper end of the adjusting plate 502 and slide to engage with the locking grooves. In step 509, the adjusting plate 502 is located below the filter plate 501. Through the cooperation of the locking rod 503 and the locking groove 509, the adjusting plate 502 can be slidably locked below the filter plate 501, allowing the adjusting plate 502 to rise and fall. An array of adjusting columns 504 is fixedly installed on the upper end of the adjusting plate 502. The filter plate 501 has an array of filter holes 5010, each shaped like a frustum. The adjusting columns 504 correspond one-to-one with the filter holes 5010. By adjusting… The position of the adjusting plate 502 can be adjusted to change the position of the adjusting column 504 in the filter hole 5010, thereby adjusting the degree of filtration. The anti-slip ring 506 is fixedly installed at both ends of the rotating rod 505. The rotating rod 505 is rotatably engaged inside the processing box 1, and one end of the rotating rod 505 is rotatably engaged on one side of the partition 2. The anti-slip ring 506 is in close contact with the processing box 1 and the partition 2. The anti-slip ring 506 can fix the rotating rod 505, thereby fixing the position of the adjusting cam 508 and preventing the adjusting plate 502 from moving during filtration. The knob 507 is fixedly connected to the other end of the rotating rod 505. The knob 507 is located on both sides of the outside of the processing box 1, and the outer side of the knob 507 has an anti-slip groove. The knob 507 can drive the rotating rod 505 to rotate. The adjusting cam 508 is fixedly installed at both ends of the rotating rod 505, and the adjusting cam 508 is located below the adjusting plate 502 and is in contact with the adjusting plate 502.

[0032] A water-permeable groove is provided on the adjusting plate 502, located on both sides of the adjusting column 504. The scraping assembly 6 includes a slide rail 601, which is fixedly installed inside the treatment box 1 and located above the adjustable filter assembly 5. A screw 602 is rotatably engaged inside the slide rail 601, with both ends of the screw 602 extending to the outer sides of the treatment box 1. A reciprocating control motor 603 is fixedly installed on the outer side of the treatment box 1, and the output end of the reciprocating control motor 603 is fixedly connected to one end of the screw 602. The reciprocating control motor 603 can drive the screw 602 to move along the slide rail 601. In the slide rail 601, a slider 604 is internally engaged with the slide rail 601. The slider 604 is threaded onto the screw 602. The rotation of the screw 602 drives the slider 604 to reciprocate within the slide rail 601. A scraper 605 is fixedly mounted on the lower end of the slider 604, and a rubber scraper 606 is fixedly mounted on the lower end of the scraper 605. The lower end of the rubber scraper 606 contacts the upper end of the filter plate 501. The slider 604 drives the scraper 605 and the rubber scraper 606 to reciprocate, thereby scraping away impurities on the filter plate 501 and reducing the occurrence of clogging. A mounting plate 607 is fixedly installed on the upper end of the slider 604. An array of stirring rods 608 are fixedly installed on the upper end of the mounting plate 607. The slider 604 drives the mounting plate 607 and stirring rods 608 to rotate. The stirring rods 608 agitate the wastewater and chemical agents, increasing the reaction rate. A sludge outlet 11 is provided on one side of the treatment tank 1, located on the upper side of the filter plate 501. The scraping assembly 6 also includes a sludge storage box 609, which is fixedly installed on the outside of the treatment tank 1 and located on one side of the sludge outlet 11. A scraper 605 and a rubber scraper 6 are also included. Impurities scraped off can enter the sludge storage box 609 through the sludge outlet 11, thereby completing the collection of impurities. The sludge storage box 609 has slots at both ends on one side, and a sealing plate 6010 is engaged in the slots. A sealing rubber plate 6011 is fixedly installed on one side of the sealing plate 6010. The sealing rubber plate 6011 is in close contact with the outside of the treatment box 1. A handle is fixedly installed on the upper end of the sealing plate 6010. The sealing plate 6010 can be engaged in the slot through the handle. At this time, the sealing rubber plate 6011 can block the sludge outlet 11 to prevent sewage from entering the sludge storage box 609 during filtration.

[0033] The conveying assembly 7 includes a conveying cylinder 701, which is fixedly installed inside the processing box 1 and located inside the conveying chamber. A conveying pipe 702 is fixedly installed on the lower end of one side and the upper end of the other side of the conveying cylinder 701. The interior of the conveying cylinder 701 is connected to the filtering chamber and the post-processing chamber through the conveying pipe 702. The conveying assembly 7 also includes a top plate 703, with latches fixedly installed at both ends of the top plate 703. The top plate 703 is secured to the upper middle position of the processing box 1 by the latches. Handles are fixedly installed on both sides of the upper end of the top plate 703, allowing the top plate 703 to be placed on the processing box 1 and fixed by the latches. Rotation grooves are formed at the middle position of the top plate 703 and the lower middle position of the processing box 1, and sealing elements are fixedly installed inside the rotation grooves. The conveying assembly 7 also includes a servo motor 705, which is fixedly installed at the lower center of the outer side of the processing tank 1. A rotating shaft 706 is fixedly installed at the output end of the servo motor 705. The rotating shaft 706 is located inside the conveying cylinder 701, and both ends of the rotating shaft 706 are in close contact with the sealing ring 704. The sealing ring 704 can reduce sewage leakage. A conveying auger 707 is fixedly installed on the outer side of the rotating shaft 706. The servo motor 705 can drive the rotating shaft 706 to rotate, thereby driving the conveying auger 707 to rotate, thus completing the sewage conveying. A sealing strip 708 is provided on the outer side of the conveying auger 707. The sealing strip 708 is in close contact with the inner wall of the conveying cylinder 701. The sealing strip 708 prevents sewage from flowing along the gaps and improves the conveying efficiency.

[0034] The post-treatment component 8 includes a mounting frame 801, which is fixedly installed inside the treatment tank 1 and located in the post-treatment chamber. Springs 802 are fixedly installed at each of the four corners of one end of the mounting frame 801, and push plates 803 are fixedly installed at the other end of each spring 802. The springs 802 can push the push plates 803, thereby pushing the activated carbon adsorption plate 804 for easy replacement by the user. The activated carbon adsorption plate 804 is slidably engaged inside the mounting frame 801 and is located on one side of the push plate 803. The activated carbon adsorption plate 804 can adsorb odors and other pollutants in the wastewater, thereby improving the wastewater treatment effect. The post-treatment component 8 also includes a tank door 805. A hinge is provided on one side of the door 805, and the door 805 is installed on one side of the treatment tank 1 via the hinge. The door 805 is located on one side of the mounting frame 801, and a sealing gasket 806 is provided on the inner side of the door 805. The sealing gasket 806 is in close contact with the treatment tank 1. A pull button is provided on the front side of the door 805. The sealing gasket 806 can prevent sewage leakage. At the same time, the door 805 can be opened to facilitate the user to replace the activated carbon adsorption plate 804. Ultraviolet sterilization lamps 807 are provided on both sides of the lower part of the mounting frame 801. The ultraviolet sterilization lamps 807 are fixedly installed on both sides of the interior of the post-treatment chamber. The ultraviolet sterilization lamps 807 can sterilize the sewage and improve the treatment effect.

[0035] The foregoing has shown and described the basic principles, main features and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are only illustrative of the principles of this invention. Various changes and modifications can be made to this invention without departing from the spirit and scope of this invention. All such changes and modifications fall within the scope of this invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage sewage treatment device for water conservancy projects, comprising a treatment tank (1), a partition (2), an inlet pipe (3), a feeding pipe (4), an adjustable filter assembly (5), a scraping assembly (6), a conveying assembly (7), a post-treatment assembly (8), and an outlet pipe (9), characterized in that: The partition (2) is fixedly installed inside the processing box (1), and the partition (2) divides the interior of the processing box (1) into a filtration chamber, a conveying chamber and a post-processing chamber. The filtration chamber and the post-processing chamber are located on both sides of the conveying chamber. The water inlet pipe (3) and the feeding pipe (4) are both fixedly installed on the upper side of the processing box (1), and the water inlet pipe (3) and the feeding pipe (4) are connected to the filtration chamber. The adjustable filter assembly (5) and the scraping assembly (6) are installed in the filtration chamber. The conveying assembly (7) is installed in the conveying chamber, and the conveying assembly (7) connects the filtration chamber and the post-processing chamber. The post-processing assembly (8) is installed in the post-processing chamber. The water outlet pipe (9) is fixedly installed on the lower side of the outer side of the processing box (1), and the water outlet pipe (9) is connected to the post-processing chamber. A shut-off valve (10) is fixedly installed on the water outlet pipe (9). The adjustable filter assembly (5) includes a filter plate (501), an adjusting plate (502), a locking rod (503), an adjusting column (504), a rotating rod (505), an anti-slip ring (506), a knob (507), and an adjusting cam (508). The filter plate (501) is fixedly installed inside the processing box (1), and the filter plate (501) is located in the filter cavity. The filter plate (501) has locking grooves (509) at each of its four corners. The locking rod (504) 503) is fixedly installed at the four corners of the upper end of the adjusting plate (502). The locking rod (503) is slidably locked in the locking groove (509). The adjusting plate (502) is located below the filter plate (501). The adjusting column (504) array is fixedly installed at the upper end of the adjusting plate (502). The filter plate (501) has an array of filter holes (5010). The filter holes (5010) are truncated cone in shape. The adjusting column (504) Corresponding one-to-one with the filter holes (5010), the anti-slip rings (506) are fixedly installed at both ends of the rotating rod (505). The rotating rod (505) is rotatably engaged inside the processing box (1), and one end of the rotating rod (505) is rotatably engaged on one side of the partition (2). The anti-slip rings (506) are in close contact with the processing box (1) and the partition (2). The knob (507) is fixedly connected to the other end of the rotating rod (505). The knob (507) is located on both sides of the outside of the processing box (1), and the outer side of the knob (507) is provided with anti-slip groove. The adjusting cam (508) is fixedly installed at both ends of the rotating rod (505), and the adjusting cam (508) is located below the adjusting plate (502), and the adjusting cam (508) is in contact with the adjusting plate (502). The adjusting plate (502) is provided with a water permeable groove, and the water permeable groove is located on both sides of the adjusting column (504).

2. The multi-stage sewage treatment device for water conservancy projects according to claim 1, characterized in that: The scraping assembly (6) includes a slide rail (601), which is fixedly installed on one side inside the processing box (1) and located above the adjustable filter assembly (5). A screw (602) is rotatably engaged inside the slide rail (601). Both ends of the screw (602) extend to the outer sides of the processing box (1). A reciprocating control motor (603) is fixedly installed on one side of the outer side of the processing box (1). The output end of the reciprocating control motor (603) is fixedly connected to one end of the screw (602). A slider (604) is slidably engaged inside the slide rail (601) and threaded onto the screw (602).

3. The multi-stage sewage treatment device for water conservancy projects according to claim 2, characterized in that: A scraper (605) is fixedly installed at the lower end of the slider (604), and a rubber scraper (606) is fixedly installed at the lower end of the scraper (605). The lower end of the rubber scraper (606) is in contact with the upper end of the filter plate (501). An installation plate (607) is fixedly installed at the upper end of the slider (604), and stirring rods (608) are fixedly installed in an array at the upper end of the installation plate (607).

4. The multi-stage sewage treatment device for water conservancy projects according to claim 3, characterized in that: The processing box (1) has a sludge outlet groove (11) on one side, which is located on the upper side of the filter plate (501). The scraping assembly (6) also includes a sludge storage box (609), which is fixedly installed on the outer side of the processing box (1) and located on the side of the sludge outlet groove (11). Both ends of the inner side of the sludge storage box (609) are provided with slots, in which a sealing plate (6010) is engaged. A sealing rubber plate (6011) is fixedly installed on one side of the sealing plate (6010), and the sealing rubber plate (6011) is in close contact with the outer side of the processing box (1). A handle is fixedly installed on the upper end of the sealing plate (6010).

5. The multi-stage sewage treatment device for water conservancy projects according to claim 4, characterized in that: The conveying assembly (7) includes a conveying cylinder (701), which is fixedly installed inside the processing box (1) and located inside the conveying chamber. A conveying pipe (702) is fixedly installed on the lower end of one side and the upper end of the other side of the conveying cylinder (701). The interior of the conveying cylinder (701) is connected to the filtering chamber and the post-processing chamber through the conveying pipe (702).

6. The multi-stage sewage treatment device for water conservancy projects according to claim 5, characterized in that: The conveying assembly (7) also includes a top plate (703), with latches fixedly installed at both ends of the top plate (703). The top plate (703) is snapped into the upper middle position of the processing box (1) by the latches. Handles are fixedly installed on both sides of the upper end of the top plate (703). Rotating grooves are provided at the middle position of the top plate (703) and the lower middle position of the processing box (1). Sealing rings (704) are fixedly installed inside the rotating grooves.

7. The multi-stage sewage treatment device for water conservancy projects according to claim 6, characterized in that: The conveying assembly (7) also includes a servo motor (705), which is fixedly installed at the lower middle position of the outer side of the processing box (1). A rotating shaft (706) is fixedly installed at the output end of the servo motor (705). The rotating shaft (706) is located inside the conveying cylinder (701), and both ends of the rotating shaft (706) are in close contact with the sealing ring (704). A conveying auger (707) is fixedly installed on the outer side of the rotating shaft (706). A sealing strip (708) is provided on the outer side of the conveying auger (707), and the sealing strip (708) is in close contact with the inner wall of the conveying cylinder (701).

8. The multi-stage sewage treatment device for water conservancy projects according to claim 1, characterized in that: The post-processing component (8) includes a mounting frame (801), which is fixedly installed inside the processing box (1) and located in the post-processing cavity. Springs (802) are fixedly installed at the four corners of one end of the mounting frame (801), and a push plate (803) is fixedly installed at the other end of the springs (802). An activated carbon adsorption plate (804) is slidably engaged inside the mounting frame (801), and the activated carbon adsorption plate (804) is located on one side of the push plate (803).

9. The multi-stage sewage treatment device for water conservancy projects according to claim 8, characterized in that: The post-processing assembly (8) also includes a door (805), a hinge is provided on one side of the door (805), the door (805) is mounted on one side of the processing box (1) by the hinge, and the door (805) is located on one side of the mounting frame (801), and a sealing gasket (806) is provided on the inner side of the door (805), the sealing gasket (806) is in close contact with the processing box (1), and a pull button is provided on one side of the front end of the door (805).

10. The multi-stage sewage treatment device for water conservancy projects according to claim 9, characterized in that: Ultraviolet sterilization lamps (807) are provided on both sides below the mounting frame (801), and the ultraviolet sterilization lamps (807) are fixedly installed on both sides inside the post-processing chamber.

Images