Multi-stage sewage treatment equipment and use method thereof

Abstract

The present invention relates to the technical field of sewage treatment, and in particular to a multi-stage sewage treatment equipment, including a sedimentation tank, etc.; the sedimentation tank is a carrier for the equipment to treat sewage, a plurality of water inlets are evenly opened on one side of the sedimentation tank, the drainage frame is arranged at the edge of the top opening of the sedimentation tank, a water flow trough is arranged in the drainage frame, water through ports are symmetrically opened on the inner wall of the drainage frame, a drainage port is symmetrically opened on the outer wall of the drainage frame, the water flow trough is located between the water through port and the drainage port, and a plurality of sedimentation inclined plates are evenly installed in the sedimentation tank in an inclined manner through an installation shaft. The present invention can effectively remove large particle impurities, small particle impurities and fine suspended matter in sewage through a multi-level structure such as a sedimentation tank, a sedimentation inclined plate and a filter assembly, realize multi-stage treatment of impurity particles of different sizes in sewage, and improve sewage treatment efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and more particularly to a multi-stage sewage treatment device and a method for using the same. Background Art

[0002] With the growth of global population and the acceleration of industrialization, the problem of water shortage is becoming increasingly serious. At the same time, the amount of sewage discharge has also increased significantly, which has brought tremendous pressure to the environment. Untreated or incompletely treated sewage directly discharged into the natural environment will cause serious environmental pollution problems, such as eutrophication of water bodies and destruction of ecosystems. Therefore, multi-stage sewage treatment technology came into being. It can not only improve treatment efficiency, but also adapt to a wider range of water quality changes, realize the effective recycling of resources and environmental protection.

[0003] After searching, the patent application with publication number CN116808710A discloses a sewage treatment device with multi-stage filtration function, including a filter box, an auger mechanism, a sewage tank, a water storage tank, a clean water tank and a water pump; although the above-mentioned sewage treatment device is designed with an auger mechanism to push mud and sand, a filter plate cleaning mechanism to clean sediments, and a multi-stage filter box is set to gradually purify the water quality, there are still certain limitations in use. Specifically, during operation, due to the flow of sewage and the rotation of the cleaning mechanism, a large turbulence will be caused. This turbulence produces a strong lift force on the mud and sand, which may cause fine particles to escape from the filtration area and flow to the next treatment stage, which not only affects the filtration effect of the current stage, but also may bring additional burdens to the subsequent treatment links. In addition, the sedimentation inclined plate sedimentation tank only relies on gravity sedimentation. Since the internal sedimentation inclined plate is fixed and difficult to adjust, it performs poorly when treating sewage containing a large amount of suspended matter, which is easy to cause residual pollution and fails to capture smaller particles well. Summary of the invention

[0004] When the existing sedimentation inclined plate sedimentation tank is used to precipitate and filter sewage, fine particles are easily escaped from the filtration area due to turbulence, resulting in unsatisfactory filtration effect. In order to overcome the existing technical problems, the present invention provides a multi-stage sewage treatment equipment and a method for using the same.

[0005] The technical scheme of the present invention is: a multi-stage sewage treatment equipment, including a sedimentation tank, a drainage frame and a sedimentation inclined plate, the sedimentation tank is a carrier for treating sewage of the equipment, a plurality of water inlets are evenly opened on one side of the sedimentation tank, the drainage frame is arranged at the edge of the top opening of the sedimentation tank, a water flow trough is arranged in the drainage frame, water through ports are symmetrically opened on the inner wall of the drainage frame, and drainage ports are symmetrically opened on the outer wall of the drainage frame, the water flow trough is located between the water through ports and the drainage ports, and a plurality of the sedimentation inclined plates are evenly opened by installing shafts and tilting The sedimentation tank is evenly installed inside the sedimentation tank, and the sedimentation tank where the sedimentation inclined plate is located is a sedimentation area for large particles of sludge; it also includes: multiple mud collecting blocks, which are arranged at the bottom of the sedimentation tank, and the mud collecting blocks are triangular blocks, and the sedimentation tank where the mud collecting blocks are located is a mud collecting area; multiple mud discharge pipes, which are installed between each of the mud collecting blocks, each of the mud discharge pipes is provided with multiple mud inlets, and the outlets of the mud discharge pipes are all connected to the same main pipe; a mud discharge valve, which is installed at the mud discharge port of the main pipe of the mud discharge pipe; a filter assembly, which includes: Rotating rollers are symmetrically mounted on the drainage frame; a driving belt is wound between the rotating rollers, and the driving belt is located just above the top opening of the sedimentation tank; a plurality of filter plates are provided and circumferentially mounted on the outside of the driving belt, and the filter plates are provided with fine filter holes; arc-shaped corner blocks are symmetrically arranged on both sides of each filter plate; a servo motor is symmetrically mounted on one side of the drainage frame and corresponds to the rotating rollers respectively, and the output shaft of the servo motor is connected to the rotating shaft of the corresponding rotating roller; a mud brushing assembly is arranged on both sides of the top of the sedimentation tank, and the mud brushing assembly is used to scrape off the fine sludge or impurities filtered out of the filter plate, and the sewage flows into the sedimentation tank evenly through the water inlet. The large particles of impurities in the sewage in the sedimentation tank will settle on the mud collecting block under the action of gravity, and the sewage is primary treated. Small particles of impurities are precipitated upward onto the sedimentation inclined plate with the water flow, and another small part of the fine particles of impurities escape from the top of the sedimentation inclined plate and are filtered again by the filter assembly, and the filter assembly is cleaned and maintained synchronously with the mud brushing assembly, so as to achieve the effect of multi-stage treatment of impurity particles in the sewage.

[0006] Furthermore, the mud brush assembly includes: an installation frame, which is symmetrically installed on both sides of the top of the drainage frame through a support frame; a guide frame, which is symmetrically installed on both sides of the inner wall of the installation frame, and the guide frame is provided with a slide groove; a sliding block, which is slidably set in the slide groove corresponding to the guide frame; a mud cleaning brush, which is slidably installed in the guide frame through the sliding block and its brush head and bristles are made of flexible materials, the mud cleaning brush can be retracted and retracted in the sliding block, and the two connecting ends of the mud cleaning brush are slidably mounted in the sliding block, and the mud cleaning brush is used to clean the fine impurity particles accumulated on the filtering surface of the filter plate; a spring I, which is set in the slide groove between the guide frame and the sliding block.

[0007] Furthermore, the arc corner blocks are symmetrically fixed to both sides of the filter plate, and the outer side surfaces of the arc corner blocks are higher than the filter plate. The arc corner blocks are specifically composed of two smooth arc edges, and the overall shape is one corner of a rounded triangle. The arc corner blocks are used to squeeze and push the sliding block and the mud cleaning brush to move. When the filter plate contacts the mud cleaning brush, when the servo motor drives the filter plate and the arc corner block to rotate synchronously through the drive belt, the rotating arc corner block pushes the sliding block to slide under the guidance of the guide frame, so that the mud cleaning brush shrinks into the sliding block. At the same time, the brush head of the mud cleaning brush is attached to the filtering surface of the filter plate for brushing, so that the fine impurity particles accumulated on the filtering surface of the filter plate are removed, thereby maintaining the filter plate to maintain a good filtering effect.

[0008] Furthermore, a cleaning assembly is provided inside the installation frame, and the cleaning assembly includes: two guide plates, which are symmetrically fixed to the inner wall of the installation frame; a cleaning frame, which is slidably connected to the inside of the installation frame through guide plates at two locations, and the guide plates can limit the end point of the downward stroke of the cleaning frame, and the inside of the cleaning frame is a cleaning groove adapted for a mud cleaning brush, and the cleaning groove of the cleaning frame is inclined upward; a spring II, which is arranged between the cleaning frame and the installation frame, and the spring II is used to reset the cleaning frame after being pushed by the arc-shaped corner block; a water inlet pipe, which is connected to one end of the cleaning frame, and the water inlet pipe is used for an external water pump; a nozzle, which is installed at the opening where the water inlet pipe is connected to the cleaning frame; a water outlet pipe, which is connected to the other end of the cleaning frame, pushes the sliding block to slide in the guide frame through the arc-shaped corner block, and after the mud cleaning brush scrapes the filtering surface of the filter screen plate, the brush head of the mud cleaning brush will fall into the cleaning frame due to its own gravity. At this time, water is promptly injected into the water inlet pipe by activating the water pump, so that the brush head of the mud cleaning brush can be cleaned by the water flow sprayed by the nozzle in the cleaning frame.

[0009] Furthermore, a blocking member is provided in the water outlet of the drainage frame, and the blocking member includes a baffle and an electric push rod I. The baffle is slidably arranged in the water outlet of the drainage frame, and the baffle covers the water outlet. The baffle is used to block the water flow of primary treatment to prevent the water flow from flowing into the drainage frame from the water outlet too quickly, thereby improving the re-filtration of the primary treated sewage by the filtering component. The electric push rod I is symmetrically installed on the top of the inner wall of the drainage frame where the water outlet is located, and the push rod of the electric push rod I is connected to the baffle. The opening degree of the baffle is controlled by the electric push rod I, so that small particles of impurities in the primary treated sewage can be fully and effectively filtered.

[0010] Furthermore, a rotary encoder is installed on the top of a side wall of the drainage frame away from the servo motor, and the coupling of the rotary encoder is connected to the shaft of one of the rotating rollers. The rotary encoder is used to detect the direction of rotation of the shaft of the rotating roller. The rotary encoder is electrically connected to the electric push rods Ⅰ at two locations through the controller respectively. The rotary encoder can monitor the rotation direction of the rotating roller driven by the servo motor in real time, and the electric push rod Ⅰ is controlled by the controller so that the electric push rod Ⅰ can automatically drive the corresponding baffle to open in the water outlet of the sedimentation inclined plate facing upward, so that the filter plate can filter the fine impurity particles escaping from the primary treated sewage in reverse flow, so that the equipment can adapt to the direction of the water flow for secondary filtration.

[0011] Furthermore, an adjustment component is arranged on the outer wall of the sedimentation tank, and the adjustment component comprises: a slide rail, which is installed on one side of the outer wall of the sedimentation tank; a slide bar, which is slidably installed on the slide rail; a plurality of slide slot plates, the number of which is the same as that of the sedimentation inclined plate and is evenly fixed on the slide bar, and the slide slot plates are all provided with slide slots; a turntable, which is installed on each of the mounting shafts; a convex rod, which is eccentrically arranged on the side of the turntable, and the convex rod is located in the slide slot of the slide slot plate; an electric push rod II, which is installed on the outer wall of the sedimentation tank, and the electric push rod II is installed on the outer wall of the sedimentation tank. The push rod of the electric push rod II is connected to the sliding bar, and the sliding bar is pushed by the electric push rod II to slide on the sliding rail, so that the slide groove of the slide groove plate on the sliding bar can rotate the turntable by squeezing the convex rod, and the rotating turntable drives the sedimentation inclined plate to deflect to the other side through the mounting shaft and maintain the inclined state, so that the impurity particles originally precipitated upward on the sedimentation inclined plate slide into the mud collecting area on the mud collecting block, and the other side of the sedimentation inclined plate continues to precipitate, thereby automatically switching the inclination direction of the sedimentation inclined plate, dumping the silt settled on the sedimentation inclined plate and maintaining a good sedimentation effect.

[0012] A method for using a multi-stage sewage treatment device comprises the following steps:

[0013] S1. Sewage is introduced into the sedimentation tank through multiple water inlets. After the sewage enters the sedimentation tank, large particles of impurities settle to the mud blocks at the bottom of the sedimentation tank under the action of gravity and are discharged through the mud discharge pipe and mud discharge valve. Smaller particles of impurities rise with the water flow and are settled by the inclined sedimentation inclined plate;

[0014] S2. Start the servo motor to drive the rotating roller to drive the filter plate to rotate above the drainage frame to filter the small particles of impurities escaping from the top of the sedimentation inclined plate again. When the filter plate contacts the mud cleaning brush, the arc-shaped corner block pushes the sliding block and the mud cleaning brush to move along the slide groove in the guide frame, so that the mud cleaning brush fits on the surface of the filter plate under the action of its own gravity for cleaning. The cleaning component automatically starts after the mud cleaning brush completes a scraping and washing action, and clean water is injected into the cleaning frame through the nozzle to rinse the mud cleaning brush to ensure its cleanliness so that it can work effectively next time;

[0015] S3. Adjust the angle of the sedimentation inclined plate by adjusting the component, and then change the inclination direction of the sedimentation inclined plate, so that the settled impurities can slide smoothly to the mud collection area, while keeping the new filter surface facing upward to continue working, cooperate with the rotary encoder to monitor the direction of the rotating roller, and control the opening and closing degree of the baffle through the controller to adapt to the filtration needs under different flow rates, ensuring that the water is fully filtered when passing through the filter screen.

[0016] The beneficial effects of the present invention are as follows: 1. Through the multi-level structure of sedimentation tank, sedimentation inclined plate and filter assembly, large particle impurities, small particle impurities and fine suspended matter in sewage can be effectively removed, and multi-level treatment of impurity particles of different sizes in sewage can be achieved, thereby improving sewage treatment efficiency.

[0017] 2. By designing the mud cleaning brush assembly, the surface of the filter plate can be automatically cleaned when it rotates for filtering, preventing the filter holes from being blocked, so that the filter plate can maintain good filtering performance for a long time. The cleaning assembly can further ensure the cleanliness of the mud cleaning brush itself, extend the service life of the equipment and reduce the need for manual maintenance.

[0018] 3. By combining the rotary encoder and the controller, the rotation direction of the rotating roller is monitored in real time, and the electric push rod I is automatically adjusted as needed to control the opening and closing state of the baffle, thereby optimizing the filtering effect to adapt to different water flow conditions.

[0019] 4. The adjustment component can automatically adjust the angle of the sedimentation inclined plate to achieve the switching of the sedimentation surface on the sedimentation inclined plate, avoiding the decrease in efficiency caused by long-term sedimentation in a single direction, which helps to discharge the sediment and improve the treatment effect and efficiency of sewage sedimentation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the drainage frame, mud discharge pipe, filter assembly and other components of the present invention.

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the components such as the sedimentation tank, sedimentation inclined plate and filter assembly of the present invention.

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the specific components of the mud brushing assembly of the present invention.

[0024] Figure 5 It is a three-dimensional structural schematic diagram of specific parts of the cleaning assembly of the present invention.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the filter component and the mud brush component of the present invention.

[0026] Figure 7 This is a connection diagram of the filtering component, the mud brushing component and the cleaning component of the present invention.

[0027] Figure 8 It is a schematic diagram of the three-dimensional structure of the sedimentation inclined plate, the mounting shaft and the adjustment assembly of the present invention.

[0028] Fig. 9 It is a three-dimensional structural schematic diagram of the filter assembly, rotary encoder and blocking member of the present invention.

[0029] In the above figures: 1: sedimentation tank, 101: water inlet, 2: drainage frame, 201: water outlet, 202: drainage outlet, 3: sedimentation inclined plate, 301: installation shaft, 4: mud collecting block, 5: mud discharge pipe, 501: mud discharge valve, 6: filter assembly, 601: rotating roller, 602: driving belt, 603: filter plate, 604: arc corner block, 605: servo motor, 7: mud brush assembly, 701: support frame, 702: installation frame, 703: guide frame, 704 : Sliding block, 705: Mud cleaning brush, 706: Spring I, 8: Cleaning assembly, 801: Guide plate, 802: Cleaning frame, 803: Spring II, 804: Water inlet pipe, 805: Nozzle, 806: Water outlet pipe, 9: Blocking member, 901: Baffle, 902: Electric push rod I, 10: Rotary encoder, 11: Adjustment assembly, 111: Slide rail, 112: Slide bar, 113: Slide plate, 114: Turntable, 115: Protruding rod, 116: Electric push rod II. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0031] Embodiment 1: A multi-stage sewage treatment equipment, such as Figure 1-Figure 3As shown, it includes a sedimentation tank 1, a drainage frame 2 and a sedimentation inclined plate 3. The sedimentation tank 1 is a carrier for treating sewage of the present device. A plurality of water inlets 101 are evenly opened on one side of the sedimentation tank 1. The drainage frame 2 is arranged at the edge of the top opening of the sedimentation tank 1. A water flow trough is arranged in the drainage frame 2. Water inlets 201 are symmetrically opened on the inner wall of the drainage frame 2. Drainage outlets 202 are symmetrically opened on the outer wall of the drainage frame 2. The water flow trough is located between the water inlet 201 and the drainage outlet 202. A plurality of sedimentation inclined plates 3 are evenly and obliquely installed inside the sedimentation tank 1 through the installation shaft 301. The sedimentation inclined plates The sedimentation tank 1 where 3 is located is a sedimentation area for large particles of sludge; it also includes: a plurality of mud collecting blocks 4, which are arranged at the bottom of the sedimentation tank 1, and the mud collecting blocks 4 are triangular blocks, and the sedimentation tank 1 where the mud collecting blocks 4 are located is a mud collecting area; a plurality of mud discharge pipes 5, which are installed between each mud collecting block 4, each mud discharge pipe 5 has a plurality of mud inlets, and the outlets of the mud discharge pipes 5 are connected to the same main pipe; a mud discharge valve 501, which is installed at the mud discharge port of the main pipe of the mud discharge pipe 5; a filter assembly 6, which includes: a rotating roller 601, which is symmetrically rotated and installed on the drainage frame 2; a driving belt 602, wound between the rotating rollers 601, the driving belt 602 is located just above the top opening of the sedimentation tank 1; the filter plates 603 are provided with multiple pieces and circumferentially installed on the outside of the driving belt 602, and the filter plates 603 are provided with fine filter holes; the arc-shaped corner blocks 604 are symmetrically arranged on both sides of each filter plate 603; the servo motors 605 are symmetrically installed on one side of the drainage frame 2 and correspond to the rotating rollers 601 respectively, and the output shafts of the servo motors 605 are connected to the rotating shafts of the corresponding rotating rollers 601; the mud brushing components 7 are arranged on both sides of the top of the sedimentation tank 1, and the brushing components 7 are arranged on both sides of the top of the sedimentation tank 1. The mud component 7 is used to scrape off the fine sludge or impurities filtered out from the filter plate 603. The sewage flows evenly into the sedimentation tank 1 through the water inlet 101. The large particles of impurities in the sewage in the sedimentation tank 1 will settle to the mud collecting block 4 under the action of gravity, and the sewage is primarily treated. The small particles of impurities are precipitated upward with the water flow onto the sedimentation inclined plate 3. Another small part of the fine particles of impurities escape from the top of the sedimentation inclined plate 3 and are filtered again by the filter component 6. The filter component 6 is cleaned and maintained synchronously with the mud brush component 7, thereby achieving the effect of multi-stage treatment of impurity particles in the sewage.

[0032] like Figure 1 , Figure 4 , Figure 6 and Figure 7As shown, the mud brush assembly 7 includes: a mounting frame 702, which is symmetrically mounted on both sides of the top of the drainage frame 2 through a support frame 701; a guide frame 703, which is symmetrically mounted on both sides of the inner wall of the mounting frame 702, and a slide groove is provided in the guide frame 703; a sliding block 704, which is slidably arranged in the slide groove corresponding to the guide frame 703; a mud cleaning brush 705, which is slidably mounted inside the guide frame 703 through the sliding block 704 and its brush head and bristles are made of flexible materials, and the two connecting ends of the mud cleaning brush 705 are slidably sleeved inside the sliding block 704, and the mud cleaning brush 705 can be retracted and retracted in the sliding block 704, so that the brush head on the mud cleaning brush 705 can be attached to the filter plate 603 under the action of gravity, and the mud cleaning brush 705 is used to clean the fine impurity particles accumulated on the filtering surface of the filter plate 603; a spring I 706, which is arranged in the slide groove between the guide frame 703 and the sliding block 704.

[0033] like Figure 6 and Figure 7 As shown, the arc corner block 604 is symmetrically fixed to the two sides of the filter plate 603, and the outer side surface of the arc corner block 604 is higher than the filter plate 603. The arc corner block 604 is specifically composed of two smooth arc edges, and the overall shape is one of the corners of a rounded triangle. The arc corner block 604 is used to squeeze and push the sliding block 704 and the mud cleaning brush 705 to move. When the filter plate 603 contacts the mud cleaning brush 705, when the servo motor 605 drives the filter plate 603 and the arc corner block 604 to rotate synchronously through the driving belt 602, the rotating arc corner block 604 pushes the sliding block 704 to slide under the guidance of the guide frame 703, so that the mud cleaning brush 705 shrinks into the sliding block 704, and at the same time, the brush head of the mud cleaning brush 705 is attached to the filtering surface of the filter plate 603 for brushing, so that the fine impurity particles accumulated on the filtering surface of the filter plate 603 are removed, thereby maintaining the filter plate 603 to maintain a good filtering effect.

[0034] like Figure 4-Figure 7As shown, a cleaning assembly 8 is provided inside the installation frame 702, and the cleaning assembly 8 includes: two guide plates 801, which are symmetrically fixed to the inner wall of the installation frame 702; a cleaning frame 802, which is slidably connected to the inside of the installation frame 702 through guide plates 801 at two locations, and the guide plates 801 can limit the end point of the downward stroke of the cleaning frame 802, and the inside of the cleaning frame 802 is a cleaning groove adapted for a mud cleaning brush 705, and the cleaning groove of the cleaning frame 802 is inclined upward; a spring II 803, which is provided between the cleaning frame 802 and the installation frame 702, and the spring II 803 is used to reset the cleaning frame 802 after being pushed by the arc-shaped corner block 604. Since the guide plate 801 limits the cleaning frame 802, the cleaning frame 802 is restored to its initial position so that The mud cleaning brush 705 can accurately fall into the cleaning frame 802; the water inlet pipe 804 is connected to one end of the cleaning frame 802, and the water inlet pipe 804 is used for an external water pump; the nozzle 805 is installed at the opening of the water inlet pipe 804 connected to the cleaning frame 802; the water outlet pipe 806 is connected to the other end of the cleaning frame 802, and the sliding block 704 is pushed to slide in the guide frame 703 through the arc-shaped corner block 604, and after the mud cleaning brush 705 scrapes the filtering surface of the filter plate 603, the brush head of the mud cleaning brush 705 falls due to its own gravity, so that the flexible bristles on the brush head fall into the cleaning frame 802. At this time, water is promptly injected into the water inlet pipe 804 by activating the water pump, so that the brush head of the mud cleaning brush 705 can be cleaned by the water flow sprayed by the nozzle 805 in the cleaning frame 802.

[0035] When the equipment is required to perform multi-stage treatment on sewage, the sewage to be treated is firstly passed through multiple water inlets 101 into the sedimentation tank 1. These water inlets 101 allow the sewage to flow in evenly to avoid poor sedimentation effect caused by excessive local water flow. After the sewage enters the sedimentation tank 1, under the action of gravity, the heavier large particles of impurities (such as sand, stones, etc.) in the sewage will have a vertical downward movement component and settle down to the mud collecting block 4 at the bottom of the sedimentation tank 1. Since the mud collecting block 4 is designed to be triangular in shape, it helps to guide the sediment to concentrate toward the center, which is convenient for the subsequent discharge and collection of the settled sludge. As the sewage slowly fills up in the sedimentation tank 1, the lighter small particles of impurities will also have a vertical upward movement component and move upward with the water flow and enter the sedimentation inclined plate. 3, and then some larger impurity particles will settle to the surface of the sedimentation inclined plate 3 and be removed, and another small part of the fine impurity particles will continue to rise from the upper end outlet of the sedimentation inclined plate 3. As the water flow continues to flow upward, the impurity particles deposited on the sedimentation surface of the sedimentation inclined plate 3 gradually increase. Under the action of gravity, most of the sediment will slide to the mud collecting block 4 at the bottom of the sedimentation tank 1. As the sedimentation proceeds, the sludge on the mud collecting block 4 at the bottom of the sedimentation tank 1 will increase. After reaching a certain amount, the mud discharge valve 501 is opened to allow the sludge on the mud collecting block 4 to flow into the mud discharge pipe 5, and is discharged to the external main pipe through the mud discharge pipe 5 for further treatment or disposal. The mud discharge valve 501 can be opened regularly as needed to ensure the sedimentation. Too much sediment will not accumulate at the bottom of pool 1. By enabling the servo motor 605, the servo motor 605 drives the rotating roller 601 to rotate through the output shaft. The rotating rotating roller 601 then drives multiple filter plates 603 to rotate above the sedimentation tank 1 through the driving belt 602. At this time, the rotation direction of the filter plate 603 is opposite to the diversion direction of the sedimentation inclined plate 3. Therefore, the filter plates 603 moving in opposite directions will capture the fine particles of impurities escaping from the top of the sedimentation inclined plate 3. As the multiple filter plates 603 are driven by the driving belt 602 to continuously filter out the fine particles of impurities escaping from the sedimentation inclined plate 3, the rotating filter plate 603 will first press the cleaning frame 802, so that the cleaning frame 802 squeezes the spring II 803, and the filter plate 603 gradually separates from the cleaning frame 802, the cleaning frame 802 is reset under the action of spring II 803. When the rotating filter plate 603 contacts the mud cleaning brush 705, the moving arc-shaped corner block 604 will be squeezed on the sliding block 704 through the arc surface, thereby pushing the sliding block 704 and the mud cleaning brush 705 to move along the slide groove in the guide frame 703. The mud cleaning brush 705 will continue to retract into the sliding block 704 and can fit tightly on the surface of the filter plate 603 to effectively scrape off the accumulated fine impurity particles filtered out by the filter plate 603. After the mud cleaning brush 705 completes a scraping and washing action, the brush head of the mud cleaning brush 705 will fall into the cleaning groove of the cleaning frame 802 under the action of its own gravity. At this time, the external water pump is started to inject clean water into the cleaning frame 802 through the water inlet pipe 804.The water flow sprayed by the nozzle 805 rinses the brush head of the mud cleaning brush 705 to ensure its cleanliness so that it can work effectively next time. The cleaned water will be discharged through the outlet pipe 806, thereby realizing the self-cleaning of the mud cleaning brush 705.

[0036] Embodiment 2: Based on embodiment 1, Figure 1 , Figure 8 and Fig. 9 As shown, a blocking member 9 is provided in the water outlet 201 of the drainage frame 2. The blocking member 9 includes a baffle 901 and an electric push rod Ⅰ902. The baffle 901 is slidably arranged in the water outlet 201 of the drainage frame 2. The baffle 901 blocks the water outlet 201. The baffle 901 is used to block the water flow of primary treatment to prevent the water flow from flowing into the drainage frame 2 from the water outlet 201 too fast, thereby improving the secondary filtration of the primary treated sewage by the filter assembly 6. The electric push rod Ⅰ902 is symmetrically installed on the top of the inner wall of the drainage frame 2 where the water outlet 201 is located. The push rod of the electric push rod Ⅰ902 is connected to the baffle 901. The opening degree of the baffle 901 is controlled by the electric push rod Ⅰ902, so that small particles of impurities in the primary treated sewage can be fully and effectively filtered; the drainage frame 2 is away from the servo A rotary encoder 10 is installed on the top of one side wall of the motor 605. The coupling of the rotary encoder 10 is connected to the shaft of one of the rotating rollers 601. The rotary encoder 10 is used to detect the direction of rotation of the shaft of the rotating roller 601. The rotary encoder 10 is electrically connected to the electric push rods Ⅰ902 at two locations through the controller. The rotary encoder 10 can monitor the rotation direction of the rotating roller 601 driven by the servo motor 605 in real time. The electric push rod Ⅰ902 is controlled by the controller so that the electric push rod Ⅰ902 can automatically drive the corresponding baffle 901 to open in the water outlet 201 facing upward on the sedimentation inclined plate 3, so that the filter plate 603 can filter the fine impurity particles escaping from the primary treated sewage in reverse flow, so that the equipment can adapt to the direction of the water flow for secondary filtration.

[0037] like Figure 1 , Figure 8 and Fig. 9As shown, an adjustment component 11 is arranged on the outer wall of the sedimentation tank 1, and the adjustment component 11 includes: a slide rail 111, which is installed on one side of the outer wall of the sedimentation tank 1; a sliding bar 112, which is slidably installed on the slide rail 111; a plurality of slide slot plates 113, the number of which is consistent with that of the sedimentation inclined plate 3 and is evenly fixed on the sliding bar 112, and the slide slot plates 113 are all provided with slide slots; a turntable 114, which is installed on each installation shaft 301; a protruding rod 115, which is eccentrically arranged on the side of the turntable 114, and the protruding rod 115 is located in the slide slot of the slide slot plate 113; an electric push rod II 116, which is installed on the outer wall of the sedimentation tank 1, and the push rod of the electric push rod II 116 It is connected to the sliding bar 112, and the sliding bar 112 is pushed to slide on the sliding rail 111 by the electric push rod II 116, so that the sliding groove of the sliding groove plate 113 on the sliding bar 112 can rotate the turntable 114 by squeezing the protruding rod 115, and the rotating turntable 114 drives the sedimentation inclined plate 3 to deflect to the other side through the installation shaft 301 and maintain the inclined state, so that the impurity particles originally precipitated upward on the sedimentation inclined plate 3 slide into the mud collecting area on the mud collecting block 4, and the other side of the sedimentation inclined plate 3 continues to precipitate, thereby automatically switching the inclined direction of the sedimentation inclined plate 3, dumping the silt deposited on the sedimentation inclined plate 3 and keeping a good sedimentation effect.

[0038] When the multiple filter plates 603 on the driving belt 602 perform secondary filtration on the floating primary treated sewage, the rotary encoder 10 monitors the rotation direction of the rotating roller 601 in real time, and controls the activation of the electric push rod I902 through the controller, so that the baffle 901 in the upward diversion outlet 201 of the sedimentation inclined plate 3 is opened, so that the filter plate 603 can filter the fine impurity particles escaping from the primary treated sewage in reverse flow, thereby realizing the equipment's adaptive water flow direction for secondary filtration. The water after multi-stage treatment finally flows through the drainage frame 2 and is discharged outward from the drainage outlet 202 into the subsequent treatment process. When a large number of impurity particles are deposited on the sedimentation surface of the sedimentation inclined plate 3, the electric push rod II116 is activated, and the electric push rod II116 pushes the slide through the push rod The movable bar 112 slides a certain distance on the slide rail 111, at which time the slide groove plate 113 on the sliding slide bar 112 rotates the turntable 114 by squeezing the convex rod 115, and the rotating turntable 114 then drives the sedimentation inclined plate 3 to deflect to the symmetrical side and tilt through the mounting shaft 301, so that the sedimentation impurity particles originally facing upward on the sedimentation inclined plate 3 can smoothly slide into the mud collecting area on the mud collecting block 4, and at the same time, the new filter surface is facing upward and the sedimentation work continues. By regularly adjusting the angle of the sedimentation inclined plate 3, the switching of the sedimentation surface can be achieved, avoiding the decrease in efficiency caused by long-term single-direction sedimentation, and after each adjustment, one side of the sedimentation inclined plate 3 becomes the new sedimentation surface again, while the other side dumps the sediment into the mud collecting area, thereby continuously maintaining a good sedimentation effect.

[0039] A method for using a multi-stage sewage treatment device comprises the following steps:

[0040] S1. Sewage is introduced into the sedimentation tank 1 through multiple water inlets 101. After the sewage enters the sedimentation tank 1, large particles of impurities settle to the mud block 4 at the bottom of the sedimentation tank 1 under the action of gravity and are discharged through the mud discharge pipe 5 and the mud discharge valve 501. Smaller particles of impurities rise with the water flow and are settled by the inclined sedimentation inclined plate 3;

[0041] S2, start the servo motor 605, drive the rotating roller 601 to drive the filter plate 603 to rotate above the drainage frame 2, and filter the small particles of impurities escaping from the top of the sedimentation inclined plate 3 again. When the filter plate 603 contacts the mud cleaning brush 705, the arc-shaped corner block 604 pushes the sliding block 704 and the mud cleaning brush 705 to move along the slide groove in the guide frame 703, so that the mud cleaning brush 705 fits on the surface of the filter plate 603 under the action of its own gravity for cleaning. The cleaning component 8 automatically starts after the mud cleaning brush 705 completes a scraping and washing action, and injects clean water into the cleaning frame 802 through the nozzle 805 to rinse the mud cleaning brush 705 to ensure its cleanliness so that it can work effectively next time;

[0042] S3. Adjust the angle of the sedimentation inclined plate 3 by adjusting the component 11, and then change the inclination direction of the sedimentation inclined plate 3, so that the precipitated impurities can slide smoothly to the mud collection area, while keeping the new filtering surface facing upward to continue working, cooperate with the rotary encoder 10 to monitor the direction of the rotating roller 601, and control the opening and closing degree of the baffle 901 through the controller to adapt to the filtering requirements under different flow rates, to ensure that the water is fully filtered when passing through the filter mesh plate 603.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A multi-stage sewage treatment equipment, comprising a sedimentation tank (1), a drainage frame (2) and a sedimentation inclined plate (3), wherein a plurality of water inlets (101) are uniformly opened on one side of the sedimentation tank (1), the drainage frame (2) is arranged at the top edge of the sedimentation tank (1), water inlets (201) are symmetrically opened on the inner wall of the drainage frame (2), and drainage outlets (202) are symmetrically opened on the outer wall of the drainage frame (2), and a plurality of sedimentation inclined plates (3) are uniformly and obliquely installed inside the sedimentation tank (1) via installation shafts (301); It is characterized in that Also included are: A plurality of mud collecting blocks (4) are arranged at the bottom of the sedimentation tank (1); the sedimentation tank (1) where the mud collecting blocks (4) are located is a mud collecting area; A plurality of mud discharge pipes (5) are installed between each of the mud collecting blocks (4), each of the mud discharge pipes (5) is provided with a plurality of mud inlets, and the outlets of the mud discharge pipes (5) are all connected to the same main pipe; A mud discharge valve (501) installed at the mud discharge port of the main pipe of the mud discharge pipe (5); A filter assembly (6), wherein the filter assembly (6) comprises: A rotating roller (601) is symmetrically mounted on the drainage frame (2); A driving belt (602) is wound between the rotating rollers (601), and the driving belt (602) is located directly above the top opening of the sedimentation tank (1); A plurality of filter plates (603) are provided and circumferentially mounted on the outer side of the driving belt (602); Arc-shaped corner blocks (604) are symmetrically arranged on both sides of each filter plate (603); A servo motor (605) is symmetrically mounted on one side of the drainage frame (2), and an output shaft of the servo motor (605) is connected to a rotating shaft of a corresponding rotating roller (601); The mud brushing assembly (7) is arranged on both sides of the top of the sedimentation tank (1), and the mud brushing assembly (7) is used to scrape off fine mud or impurities filtered out from the filter plate (603).

2. A multi-stage sewage treatment equipment according to claim 1, characterized in that: The mud brushing assembly (7) comprises: A mounting frame (702) is symmetrically mounted on two sides of the top of the drainage frame (2) via a support frame (701); A guide frame (703) is symmetrically mounted on two sides of the inner wall of the mounting frame (702), and a slide groove is provided in each of the guide frames (703); A sliding block (704) is slidably disposed in the sliding groove corresponding to the guide frame (703); A mud cleaning brush (705) is slidably mounted inside the guide frame (703) via a sliding block (704), and two connecting ends of the mud cleaning brush (705) are slidably sleeved inside the sliding block (704); Spring I (706) is arranged in the sliding groove between the guide frame (703) and the sliding block (704).

3. A multi-stage sewage treatment equipment according to claim 2, characterized in that: The arc-shaped corner block (604) is symmetrically fixed to two sides of the filter plate (603), and the outer side surface of the arc-shaped corner block (604) is higher than the filter plate (603). The arc-shaped corner block (604) is specifically composed of two smooth arc edges, and the whole is in the shape of one corner of a rounded triangle.

4. A multi-stage sewage treatment equipment according to claim 3, characterized in that: A cleaning component (8) is provided inside the installation frame (702), and the cleaning component (8) comprises: Two guide plates (801) are symmetrically fixed to the inner wall of the installation frame (702); A cleaning frame (802) is slidably connected to the interior of the mounting frame (702) via two guide plates (801), and the interior of the cleaning frame (802) is a cleaning groove adapted for a mud cleaning brush (705); A spring II (803) is disposed between the cleaning frame (802) and the mounting frame (702), and the spring II (803) is used to reset the cleaning frame (802) after being moved by the arc-shaped corner block (604); A water inlet pipe (804) is connected to one end of the cleaning frame (802), and the water inlet pipe (804) is used to connect to an external water pump; A spray head (805) is installed at the opening of the water inlet pipe (804) connected to the cleaning frame (802); The water outlet pipe (806) is connected to the other end of the cleaning frame (802).

5. A multi-stage sewage treatment equipment according to claim 4, characterized in that: A blocking member (9) is provided in the water opening (201) of the drainage frame (2), wherein the blocking member (9) comprises a baffle (901) and an electric push rod I (902), wherein the baffle (901) is slidably disposed in the water opening (201) of the drainage frame (2), and the baffle (901) blocks the water opening (201).

6. A multi-stage sewage treatment equipment according to claim 5, characterized in that: A rotary encoder (10) is installed on the top of a side wall of the drainage frame (2) away from the servo motor (605). The coupling of the rotary encoder (10) is connected to the shaft of one of the rotating rollers (601). The rotary encoder (10) is used to detect the rotation direction of the shaft of the rotating roller (601). The rotary encoder (10) is electrically connected to two electric push rods I (902) through a controller.

7. A multi-stage sewage treatment equipment according to claim 6, characterized in that: An adjustment component (11) is provided on the outer wall of the sedimentation tank (1), and the adjustment component (11) comprises: A slide rail (111) installed on one side of the outer wall of the sedimentation tank (1); A sliding bar (112) slidably mounted on the sliding rail (111); A plurality of slide groove plates (113), the number of which is the same as the number of the sedimentation inclined plates (3) and which are evenly fixed to the sliding bar (112), and the slide groove plates (113) are all provided with slide grooves; A rotating disk (114) mounted on each of the mounting shafts (301); A protruding rod (115) is eccentrically arranged on a side surface of the rotating disk (114), and the protruding rod (115) is located in a slide groove of the slide groove plate (113); An electric push rod II (116) is installed on the outer wall of the sedimentation tank (1), and a push rod of the electric push rod II (116) is connected to a sliding bar (112).

8. A method for using a multi-stage sewage treatment device, which uses the multi-stage sewage treatment device according to claim 7, characterized in that: The following steps are involved: S1. Sewage is introduced into a sedimentation tank (1) through a plurality of water inlets (101). After the sewage enters the sedimentation tank (1), large impurities therein settle to a mud collecting block (4) at the bottom of the sedimentation tank (1) under the action of gravity and are discharged through a mud discharge pipe (5) and a mud discharge valve (501). Smaller impurities are raised along with the water flow and are settled by an inclined sedimentation inclined plate (3); S2, starting the servo motor (605), driving the rotating roller (601) to drive the filter plate (603) to rotate above the drainage frame (2), and filtering the small particles of impurities escaping from the top of the sedimentation inclined plate (3) again. When the filter plate (603) contacts the mud cleaning brush (705), the arc-shaped corner block (604) pushes the sliding block (704) and the mud cleaning brush (705) to move along the slide groove in the guide frame (703), so that the mud cleaning brush (705) is attached to the surface of the filter plate (603) under the action of its own gravity to clean. The cleaning component (8) automatically starts after the mud cleaning brush (705) completes a scraping action, and injects clean water into the cleaning frame (802) through the nozzle (805) to rinse the mud cleaning brush (705) to ensure its cleanliness so that it can work effectively next time; S3. The angle of the sedimentation inclined plate (3) is adjusted by means of the adjustment component (11), thereby changing the inclination direction of the sedimentation inclined plate (3), so that the precipitated impurities can smoothly slide down to the mud collection area, while keeping the new filtering surface facing upwards to continue working, cooperating with the rotary encoder (10) to monitor the direction of the rotating roller (601), and controlling the opening and closing degree of the baffle (901) through the controller to adapt to the filtering requirements under different flow rates, thereby ensuring that the water is fully filtered when passing through the filter screen (603).

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