Self-cleaning filtration system for sewage treatment and filtration process thereof

Abstract

The application discloses a self-cleaning filtering system for sewage treatment and a filtering process thereof, which comprises a filtering barrel, a bottom shell is fixedly connected to the bottom end of the filtering barrel, two drain valves are installed in the bottom shell, and a discharge valve is fixedly connected to the discharge port of the bottom shell; dirt accumulated at the bottom of the second filter screen can be discharged to the outside through the discharge valve by cooperation of sealing baffles and other parts, manual operation of workers is not needed, dirt accumulation in the filtering barrel is avoided, and blockage is avoided; by cooperation of stirring rods and other parts, a length of the pulling rope is initially reserved, when dirt is discharged by the discharge valve, the output end of the second driving motor continues to reciprocate, the stirring rod is gradually pulled tight in the reciprocating process of the swinging rod, and the stirring rod rotates after the pulling rope is pulled tight, so that the rotating ring and the flow guide pipe inside are dredged through the stirring rod.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, and particularly relates to a self-cleaning filtering system for sewage treatment and a filtering process thereof. BACKGROUND

[0002] Sewage treatment is a process of purifying sewage to meet the water quality requirements for discharge into a certain water body or reuse, and is widely applied in the fields of construction, agriculture, transportation, energy, petrochemical industry, environmental protection and the like. In wastewater discharge, special equipment is needed to filter out harmful impurities in the sewage, so as to facilitate further treatment of the sewage.

[0003] According to the announcement number "CN218794293U", it is "a self-cleaning filtering device for sewage treatment", which comprises a frame, the top of the frame is fixedly connected with the bottom of the water inlet, the inner wall of the frame is fixedly connected with the top of the bearing, the inner wall of the bearing is movably connected with the top of the center rod, the center rod is provided with a sliding rail groove, one side of the center rod is movably connected with one side of the sliding block, one side of the long connecting rod is movably connected with one side of the wiping rod, one side of the frame is fixedly connected with one side of the sewage treatment port, the bottom of the frame is fixedly connected with the top of the supporting leg, one side of the frame is fixedly connected with one side of the clean water outlet, the improved sewage filtering device can rely on the rotating shaft to drive the connecting rod structure to clean the inner wall and flush the dirt covered on the filter plate, prevent the dirt from covering to reduce the filtering effect, and monitor the filtering effect of the filtering device through the water quality instrument.

[0004] Although the above-mentioned patent can realize the cleaning of the inner wall of the filtering device, the above-mentioned patent still has the following problems:

[0005] (1) The above-mentioned patent filters the sewage entering the equipment, but the dirt filtered out is easy to accumulate on the top of the filter screen, which can cause the filter screen to be blocked if not discharged in time;

[0006] (2) The filter screen in the above-mentioned patent filters the sewage, and the dirt is easy to block the filter screen mesh, thereby affecting the sewage circulation and reducing the filtering effect of the sewage. Therefore, the present application provides a self-cleaning filtering system for sewage treatment and a filtering process thereof to solve the above-mentioned problems. SUMMARY

[0007] The present application aims to solve the problems that the dirt is easy to accumulate on the top of the filter screen and the dirt is easy to block the filter screen mesh, and provides a self-cleaning filtering system for sewage treatment and a filtering process thereof.

[0008] In order to achieve the above object, the present application provides the following technical scheme: a self-cleaning filtering system for sewage treatment, comprising a filtering barrel, a bottom shell is fixedly connected to the bottom end of the filtering barrel, two drain valves are installed in the bottom shell, a discharge valve is fixedly connected to the discharge port of the bottom shell, a first filter screen is slidably connected to the inner side of the bottom shell, a connecting shell is arranged on the inner side of the first filter screen, a dislocation auxiliary mechanism is arranged between the first filter screen and the connecting shell, a second filter screen is fixedly connected to the inner side of the connecting shell, a shielding device is arranged above the connecting shell for shielding the second filter screen, a sweeper is arranged on the top of the connecting shell and matched with the shielding device, a flow guide pipe is fixedly connected to the top end of the discharge valve, a rotating ring is rotatably connected to the top of the flow guide pipe and abuts against the inner side of the connecting shell and is rotatably connected with the connecting shell, an agitating auxiliary member is arranged on the inner side of the rotating ring for dredging the inside of the flow guide pipe, and an impact cleaning mechanism is arranged below the first filter screen for cleaning the inside of the mesh of the first filter screen.

[0009] As a further scheme of the present application, the shielding device comprises a fixed seat fixedly connected to the inside of the filtering barrel, a hydraulic cylinder is installed on the inner side of the fixed seat, a sealing cover is fixedly connected to the output end of the hydraulic cylinder and penetrates downward to the fixed seat, a second rectangular sleeve is fixedly connected to the outer wall of the sealing cover, a first rectangular sliding block is slidably connected to the inner side of the second rectangular sleeve, a connecting spring is fixedly connected to the top end of the first rectangular sliding block, one end of the connecting spring is fixedly connected to the second rectangular sleeve, a shielding cover is fixedly connected to the bottom end of the first rectangular sliding block and abuts against the outer wall of the sealing cover, and a partition blocking assembly is arranged on the outer wall of the shielding cover.

[0010] As a further scheme of the present application, the partition blocking assembly comprises a first fixed ring fixedly connected to the outer wall of the shielding cover, a second rectangular sliding block is slidably connected to the inner side of the first fixed ring, an auxiliary spring is fixedly connected to the top end of the second rectangular sliding block, one end of the auxiliary spring is fixedly connected to the first fixed ring, and a sealing baffle is fixedly connected to the bottom end of the second rectangular sliding block.

[0011] As a further further scheme of the present application: the sweeper includes an auxiliary seat fixedly connected to the top of the rotating ring, a second driving motor is installed on the inner side of the auxiliary seat, a connecting shaft is connected to the output end of the second driving motor, one end of the connecting shaft penetrates through to the inner side of the auxiliary seat and is fixedly connected with an oscillating rod, one end of the oscillating rod is fixedly connected with a retracting rod, a cleaning rod is arranged on the outer wall of the retracting rod, a first driving motor is installed on the inner side of the sealing cover, a second fixed ring is fixedly connected to the output end of the first driving motor and penetrates through to the outside of the sealing cover, a first rectangular sleeve is fixedly connected to the bottom of the second fixed ring, a rectangular rod is slidably connected to the inner side of the first rectangular sleeve, and the bottom of the rectangular rod is fixedly connected with the auxiliary seat.

[0012] As a further further scheme of the present application: a rectangular groove matched with the retracting rod is formed in the inner side of the cleaning rod, the retracting rod is slidably connected to the inner side of the cleaning rod, a compression spring is fixedly connected to one end of the retracting rod, and one end of the compression spring is fixedly connected with the cleaning rod.

[0013] As a further further scheme of the present application: the stirring auxiliary part includes two fixed sleeve seats fixedly connected to the inner side of the rotating ring, a rotating shaft is rotatably connected to the inner side of each of the two fixed sleeve seats, a torsion spring is installed between the rotating shaft and the fixed sleeve seat, an agitation rod is fixedly connected to one end of the rotating shaft and penetrates through to the inside of the rotating ring, a pulling rope is fixedly connected to one end of the agitation rod, one end of the pulling rope penetrates through to the inner side of the auxiliary seat and is fixedly connected with the oscillating rod, two auxiliary wheels are rotatably connected to the inner side of the auxiliary seat, and the two auxiliary wheels are attached to the two sides of the pulling rope.

[0014] As a further further scheme of the present application: the impact removing mechanism includes a sealing shield ring fixedly connected to the outer wall of the rotating ring, a first support and a second support are fixedly connected to the two sides of the sealing shield ring, a high-pressure nozzle is installed on the inner side of the second support and located below the first filter screen, an agitation rod is fixedly connected to the top end of the first support, a movable rod is slidably connected to the inner side of the agitation rod, the top end of the movable rod is fixedly connected with the second support, a compression spring is fixedly connected to the bottom end of the movable rod, the bottom end of the compression spring is fixedly connected with the first support, and the top of the sealing shield ring is attached to the bottom end of the connecting shell.

[0015] As a further further scheme of the present application: a plurality of high-pressure nozzles are installed on the inner side of each of the two second supports, and the gap between every two high-pressure nozzles installed on the inner side of one of the second supports coincides with the position of the high-pressure nozzle installed on the inner side of the other second support.

[0016] As a further scheme of the present application: the misalignment auxiliary mechanism comprises a T-shaped guide shell fixedly connected at the bottom of the connecting shell, a T-shaped block is in sliding connection with the inner side of the T-shaped guide shell, one side of the T-shaped block is fixedly connected with a protruding block, a limiting sliding groove matched with the protruding block is formed in the inner side of the connecting shell and the T-shaped guide shell, and the top end of the first filter screen is fixedly connected with a connecting rod, one end of the connecting rod is fixedly connected with the second rectangular sleeve.

[0017] The application further discloses a self-cleaning filtering process for sewage treatment.

[0018] S1, the cleaning rod is initially located below the sealing baffle, the shielding cover is initially located above the connecting shell, first, during the filtering process of sewage through the first filter screen and the second filter screen, the hydraulic cylinder can be intermittently started, the output end of the hydraulic cylinder drives the sealing cover to move downward together with the shielding cover and the sealing baffle, when the bottom of the sealing baffle and the shielding cover is attached to the top end of the connecting shell, the second filter screen is separated from the inside of the filtering barrel, when the sealing baffle and the shielding cover are lowered and resistance is generated, the sealing baffle and the shielding cover extrude the auxiliary spring and the second rectangular sliding block respectively, since the sealing baffle is provided with a plurality of sealing baffles, the plurality of sealing baffles are distributed in different heights according to positions, then the first driving motor and the second driving motor are started, the output end of the second driving motor drives the swing rod of the connecting shaft to reciprocate by 90 degrees, so that the cleaning rod reciprocates, so that the cleaning rod cleans dirt at the bottom of the sealing baffle, the first driving motor drives the second fixed ring to drive the auxiliary seat and the rotating ring to rotate in a circle through the rectangular rod, so that the bottom of the sealing baffle can be cleaned, so that the plurality of sealing baffles isolate the shielding cover from the outside, after the cleaning rod cleans dirt at the bottom of the shielding cover, the shielding cover can completely isolate the second filter screen from the outside, then the discharge valve is opened, so that dirt accumulated at the bottom of the second filter screen can be discharged to the outside through the discharge valve, without manual operation of workers, and dirt accumulation in the filtering barrel is avoided, so that the smoothness of sewage filtering is improved.

[0019] S2, the length of the pull rope is initially reserved, when the dirt is discharged by the discharge valve, the second drive motor output end continues to swing back and forth, so that the swing rod rotates back and forth, and the pull rope is gradually tightened during the rotation of the swing rod, when the pull rope is tightened, the agitator rotates, so that the agitator is used to dredge the inside of the rotating ring and the flow guide pipe, so as to avoid the blockage caused by the discharge of dirt;

[0020] S3, when the contraction rod drives the cleaning rod to swing back and forth, the cleaning rod is separated from the sealing baffle and the shielding cover, when the sealing baffle and the shielding cover are attached to the top of the connecting shell, the cleaning rod is in contact with the inside of the shielding cover and is resisted, so that the cleaning rod can be automatically contracted, so that the contraction rod and the cleaning rod can normally operate, when the shielding cover isolates the second filter screen from the outside, the cleaning rod swings and rotates around the circumference through the compression spring, so that the dirt accumulated on the top of the second filter screen can be cleaned into the flow guide pipe, so that the dirt can be actively discharged, so as to improve the effect of dirt discharge;

[0021] S4, when the sealing cover moves downward, the first filter screen is moved downward through the connecting rod, so that the T-shaped block and the convex block slide inside the connecting shell and the T-shaped guide shell, so that the first filter screen is dislocated with the connecting shell, so as to avoid the dirt in the sealing baffle and the connecting shell during the continuous filtration of sewage, so as to ensure the smoothness of the sealing baffle and the connecting shell;

[0022] S5, the rotating ring rotates around the circumference, and the sealing shielding ring rotates around the circumference, so that the high-pressure water column sprayed by the plurality of high-pressure nozzles impacts the mesh of the first filter screen, so as to clean the dirt blocked in the mesh of the first filter screen, so as to improve the smoothness of the first filter screen for sewage filtration.

[0023] Compared with the prior art, the beneficial effects of the present application are:

[0024] 1. By setting the cooperation of sealing baffle and other parts, when the sealing baffle and the bottom of the shielding cover are attached to the top of the connecting shell, the second filter screen is separated from the inside of the filter barrel, when the sealing baffle and the shielding cover are lowered and resistance is received, the sealing baffle and the shielding cover extrude the auxiliary spring and the second rectangular slide respectively, because the sealing baffle is provided with multiple, so that multiple sealing baffles are distributed in high and low according to the different positions, then the first drive motor and the second drive motor are started, the second drive motor output end drives the oscillating rod of the connecting shaft to reciprocate at ninety degrees, so that the cleaning rod reciprocates, so that the cleaning rod cleans the dirt at the bottom of the sealing baffle, the first drive motor drives the second fixed ring to drive the auxiliary seat and the rotating ring to rotate circumferentially through the rectangular rod, so that the bottom of the sealing baffle can be cleaned, so that the multiple sealing baffles isolate the shielding cover from the outside, after the cleaning rod cleans the dirt obstructed at the bottom of the shielding cover, the shielding cover can completely isolate the second filter screen from the outside, then the discharge valve is opened, so that the dirt accumulated at the bottom of the second filter screen can be discharged to the outside through the discharge valve, without manual operation of the staff, thereby avoiding the dirt accumulation in the filter barrel to cause blockage, thereby improving the smoothness of sewage filtration;

[0025] 2. By setting the cooperation of the stirring rod and other parts, the initial length of the pulling rope is reserved, when the discharge valve discharges the dirt, the second drive motor output end continues to reciprocate, so that the oscillating rod gradually tightens the pulling rope during reciprocating rotation, when the pulling rope is tightened, the stirring rod rotates, thereby dredging the inside of the rotating ring and the flow guide pipe through the stirring rod, thereby avoiding blockage caused by dirt discharge;

[0026] 3. By setting the cooperation of the cleaning rod and other parts, when the retracting rod drives the cleaning rod to reciprocate, the cleaning rod is separated from the sealing baffle and the shielding cover, when the sealing baffle and the shielding cover are attached to the top of the connecting shell, the cleaning rod is reset and contacts the inside of the shielding cover, so that the cleaning rod extrudes the spring to slide on the outer wall of the retracting rod, so that the cleaning rod can be automatically retracted, so that the retracting rod and the cleaning rod can normally operate, when the shielding cover isolates the second filter screen from the outside, the extrusion spring and the cleaning rod oscillate and rotate circumferentially, so that the dirt accumulated at the top of the second filter screen can be cleaned into the flow guide pipe, so that the dirt can be actively discharged, thereby improving the effect of dirt discharge;

[0027] 4. By setting the cooperation of the high-pressure nozzle and other parts, the rotating ring rotates circumferentially while the multiple high-pressure nozzles of the sealing cover ring rotate circumferentially, the high-pressure water column sprayed by the multiple high-pressure nozzles impacts the mesh of the first filter screen, thereby cleaning the dirt blocked in the mesh of the first filter screen, thereby improving the smoothness of the first filter screen for sewage filtration;

[0028] 5. By setting the dislocation auxiliary mechanism, when the sealing cover moves downward, the first filter screen is driven to move downward by the connecting rod, so that the T-shaped block and the convex block slide in the inner side of the connecting shell and the T-shaped guide shell, the first filter screen is dislocated with the connecting shell, so that the continuous filtering process of the sewage is avoided, and the dirt is prevented from causing obstruction in the process of the sealing baffle and the connecting shell being attached, so that the smoothness of the sealing baffle and the connecting shell being attached is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the application;

[0030] Figure 2 It is a structural schematic diagram of the filter barrel of the application;

[0031] Figure 3 It is a sectional view of the sealing cover of the application;

[0032] Figure 4 It is a structural schematic diagram of the sealing cover of the application;

[0033] Figure 5 It is a structural schematic diagram of the sealing baffle of the application;

[0034] Figure 6 It is a structural schematic diagram of the bottom shell of the application;

[0035] Figure 7 It is an enlarged view of A in the application; Figure 6

[0036] Figure 8 It is a sectional view of the cleaning rod of the application;

[0037] Figure 9 It is an enlarged view of B in the application; Figure 8

[0038] Figure 10 It is a sectional view of the auxiliary seat of the application;

[0039] Figure 11 It is a sectional view of the connecting shell of the application.

[0040] ​​Fig. 1: 1, filter barrel; 2, bottom shell; 3, first filter screen; 4, connecting shell; 5, second filter screen; 6, protruding block; 7, sealing cover; 8, connecting rod; 9, fixing seat; 10, drainage valve; 11, discharge valve; 12, flow guide pipe; 13, rotating ring; 14, first fixing ring; 15, sealing baffle; 16, shielding cover; 17, rectangular rod; 18, second fixing ring; 19, first rectangular sleeve; 20, hydraulic cylinder; 21, first driving motor; 22, first rectangular sliding block; 23, second rectangular sleeve; 24, connecting spring; 25, auxiliary spring; 26, second rectangular sliding block; 27, sealing shielding ring; 28, first support; 29, second support; 30, high-pressure spray head; 31, movable rod; 32, stirring rod; 33, compression spring; 34, T-shaped block; 35, T-shaped guide shell; 36, retracting rod; 37, cleaning rod; 38, extrusion spring; 39, swinging rod; 40, auxiliary seat; 41, second driving motor; 42, connecting shaft; 43, pulling rope; 44, auxiliary wheel; 45, rotating shaft; 46, fixed sleeve seat; 47, torsional spring. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0042] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "providing" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The embodiments of the present application will be described below according to the overall structure of the present application.

[0043] Please refer to Figures 1-11In the embodiment of the application, a self-cleaning filtering system for sewage treatment comprises a filtering barrel 1, a bottom shell 2 fixedly connected to the bottom end of the filtering barrel 1, two drain valves 10 installed in the bottom shell 2, a discharge valve 11 fixedly connected to the discharge port of the bottom shell 2, a first filter screen 3 slidably connected to the inner side of the bottom shell 2, a connecting shell 4 arranged on the inner side of the first filter screen 3, a dislocation auxiliary mechanism arranged between the first filter screen 3 and the connecting shell 4, a second filter screen 5 fixedly connected to the inner side of the connecting shell 4, a shielding device arranged above the connecting shell 4 and used for shielding the second filter screen 5, a sweeper arranged on the top of the connecting shell 4 and matched with the shielding device, a flow guide pipe 12 fixedly connected to the top end of the discharge valve 11, a rotating ring 13 rotatably connected to the top of the flow guide pipe 12 and abutting against the inner side of the connecting shell 4, and an agitating auxiliary piece arranged on the inner side of the rotating ring 13 and used for dredging the inside of the flow guide pipe 12; an impact cleaning mechanism arranged below the first filter screen 3 and used for cleaning the inside of the mesh of the first filter screen 3, and the shielding device comprising a fixed seat 9 fixedly connected to the inside of the filtering barrel 1, a hydraulic cylinder 20 installed on the inner side of the fixed seat 9, a sealing cover 7 fixedly connected to the output end of the hydraulic cylinder 20 and penetrating downwardly to the bottom of the fixed seat 9, a second rectangular sleeve 23 fixedly connected to the outer wall of the sealing cover 7, a first rectangular sliding block 22 slidably connected to the inner side of the second rectangular sleeve 23, a connecting spring 24 fixedly connected to the top end of the first rectangular sliding block 22 and having one end fixedly connected to the second rectangular sleeve 23, a shielding cover 16 fixedly connected to the bottom end of the first rectangular sliding block 22 and abutting against the outer wall of the sealing cover 7, and a split blocking assembly arranged on the outer wall of the shielding cover 16 and comprising a first fixed ring 14 fixedly connected to the outer wall of the shielding cover 16, a second rectangular sliding block 26 slidably connected to the inner side of the first fixed ring 14, an auxiliary spring 25 fixedly connected to the top end of the second rectangular sliding block 26 and having one end fixedly connected to the first fixed ring 14, and a sealing baffle 15 fixedly connected to the bottom end of the second rectangular sliding block 26.

[0044] In the embodiment, the cleaning rod 37 is initially located below the sealing baffle 15, and the shielding cover 16 is initially located above the connecting shell 4. First, the hydraulic cylinder 20 is intermittently started during the filtering process of the sewage through the first filter screen 3 and the second filter screen 5. The output end of the hydraulic cylinder 20 drives the shielding cover 16 and the sealing baffle 15 to move downwardly. When the bottom of the sealing baffle 15 and the shielding cover 16 abut against the top end of the connecting shell 4, the second filter screen 5 is separated from the inside of the filtering barrel 1. Then, the discharge valve 11 is opened, so that the dirt accumulated at the bottom of the second filter screen 5 can be discharged to the outside through the discharge valve 11

[0045] Please pay attention to Figures 1-10The sweeper comprises an auxiliary seat 40 fixedly connected to the top of the rotating ring 13, a second driving motor 41 mounted on the inner side of the auxiliary seat 40, a connecting shaft 42 connected to the output end of the second driving motor 41, an oscillating rod 39 fixedly connected to one end of the connecting shaft 42 penetrating into the inner side of the auxiliary seat 40, a retracting rod 36 fixedly connected to one end of the oscillating rod 39, a cleaning rod 37 provided on the outer wall of the retracting rod 36, a first driving motor 21 mounted on the inner side of the sealing cover 7, a second fixed ring 18 fixedly connected to the output end of the first driving motor 21 penetrating to the outside of the sealing cover 7, a first rectangular sleeve 19 fixedly connected to the bottom of the second fixed ring 18, a rectangular rod 17 slidably connected to the inner side of the first rectangular sleeve 19, the bottom of the rectangular rod 17 being fixedly connected to the auxiliary seat 40, a rectangular groove matched with the retracting rod 36 being formed in the inner side of the cleaning rod 37, the retracting rod 36 being slidably connected to the inner side of the cleaning rod 37, an extrusion spring 38 fixedly connected to one end of the retracting rod 36, one end of the extrusion spring 38 being fixedly connected to the cleaning rod 37.

[0046] In the embodiment, when the sealing baffle 15 and the shielding cover 16 are attached to the top end of the connecting shell 4, the second filter screen 5 is separated from the inside of the filter barrel 1, when the sealing baffle 15 and the shielding cover 16 are lowered and resistance is generated, the sealing baffle 15 and the shielding cover 16 extrude the auxiliary spring 25 and the second rectangular slide block 26 respectively, since the sealing baffle 15 is provided with a plurality of sealing baffles 15, the plurality of sealing baffles 15 are distributed in high and low positions, then the first driving motor 21 and the second driving motor 41 are started, the second driving motor 41 drives the oscillating rod 39 connected to the connecting shaft 42 to reciprocate by 90 degrees, so that the cleaning rod 37 connected to the oscillating rod 39 reciprocates, so that the cleaning rod 37 cleans the dirt on the bottom of the sealing baffle 15, the first driving motor 21 drives the second fixed ring 18 to drive the auxiliary seat 40 and the rotating ring 13 to rotate in a circle through the rectangular rod 17, so that the bottom of the sealing baffle 15 can be cleaned, so that the plurality of sealing baffles 15 isolate the shielding cover 16 from the outside, after the cleaning rod 37 cleans the dirt blocked on the bottom of the shielding cover 16, the shielding cover 16 can completely isolate the second filter screen 5 from the outside, then the discharge valve 11 is opened, so that the dirt accumulated on the bottom of the second filter screen 5 can be discharged to the outside through the discharge valve 11, without manual operation of the staff, thereby avoiding the dirt accumulation in the filter barrel 1 to cause blockage, so as to improve the smoothness of the sewage filtration.

[0047] Please pay attention to Figure 9The stirring auxiliary part comprises two fixed sleeves 46 fixedly connected to the inner side of the rotating ring 13, the inner side of each of the two fixed sleeves 46 is rotationally connected with a rotating shaft 45, the rotating shaft 45 is provided with a torsion spring 47 between the rotating shaft 45 and the fixed sleeve 46, one end of the rotating shaft 45 penetrates into the interior of the rotating ring 13 and is fixedly connected with a stirring rod 32, one end of the stirring rod 32 is fixedly connected with a pulling rope 43, one end of the pulling rope 43 penetrates into the inner side of the auxiliary seat 40 and is fixedly connected with the swing rod 39, and the inner side of the auxiliary seat 40 is rotationally connected with two auxiliary wheels 44 which are in close contact with the two sides of the pulling rope 43.

[0048] In the embodiment, the pulling rope 43 is initially provided with a reserved length, when the dirt is discharged by the discharging valve 11, the output end of the second driving motor 41 continues to reciprocate, so that the swing rod 39 is gradually pulled tight in the reciprocating process, and the stirring rod 32 is rotated when the pulling rope 43 is pulled tight, so that the interior of the rotating ring 13 and the flow guide pipe 12 is dredged by the stirring rod 32, thereby avoiding the blockage caused by the discharge of the dirt.

[0049] Please refer to Figures 6-7 The impact removing mechanism comprises a sealing shield ring 27 fixedly connected to the outer wall of the rotating ring 13, the two sides of the sealing shield ring 27 are respectively fixedly connected with a first support 28 and a second support 29, the inner side of the second support 29 is provided with a high-pressure nozzle 30, the high-pressure nozzle 30 is located below the first filter screen 3, the top end of the first support 28 is fixedly connected with a stirring rod 32, the inner side of the stirring rod 32 is slidably connected with a movable rod 31, the top end of the movable rod 31 is fixedly connected with the second support 29, the bottom end of the movable rod 31 is fixedly connected with a compression spring 33, the bottom end of the compression spring 33 is fixedly connected with the first support 28, the top of the sealing shield ring 27 is in close contact with the bottom end of the connecting shell 4, the inner side of each of the two second supports 29 is provided with a plurality of high-pressure nozzles 30, and the gap between every two high-pressure nozzles 30 provided in the inner side of one second support 29 is coincided with the position of the high-pressure nozzle 30 provided in the inner side of the other second support 29.

[0050] In the embodiment, the rotating ring 13 rotates circumferentially, and the plurality of high-pressure nozzles 30 carried by the sealing shield ring 27 rotate circumferentially, the high-pressure water column sprayed by the plurality of high-pressure nozzles 30 impacts the mesh holes of the first filter screen 3, thereby cleaning the dirt blocked in the mesh holes of the first filter screen 3, so that the smoothness of the first filter screen 3 in filtering the sewage is improved.

[0051] Please refer to Figure 11The misalignment auxiliary mechanism includes a T-shaped guide shell 35 fixedly connected to the bottom of the connecting shell 4, a T-shaped block 34 slidably connected to the inner side of the connecting shell 4 and the T-shaped guide shell 35, a protrusion 6 fixedly connected to one side of the T-shaped block 34, and a limiting groove matching the protrusion 6 opened on the inner side of the connecting shell 4 and the T-shaped guide shell 35. A connecting rod 8 is fixedly connected to the top of the first filter screen 3, and one end of the connecting rod 8 is fixedly connected to the second rectangular sleeve 23.

[0052] In this embodiment: when the sealing cover 7 moves downward, the first filter screen 3 moves downward through the connecting rod 8, thereby sliding the T-shaped block 34 and the protrusion 6 inside the connecting shell 4 and the T-shaped guide shell 35, causing the first filter screen 3 and the connecting shell 4 to be misaligned. This avoids the dirt from causing obstruction during the continuous filtration of sewage when the sealing baffle 15 and the connecting shell 4 are attached, thus ensuring the smoothness of the attachment between the sealing baffle 15 and the connecting shell 4.

[0053] The following describes a self-cleaning filtration process for wastewater treatment, based on the aforementioned self-cleaning filtration system, specifically including the following steps:

[0054] S1. The cleaning rod 37 is initially positioned below the sealing baffle 15, and the shield 16 is initially positioned above the connecting shell 4. First, during the process of filtering sewage through the first filter screen 3 and the second filter screen 5, the hydraulic cylinder 20 can be activated intermittently. The output end of the hydraulic cylinder 20 drives the shield 16 and the sealing baffle 15 on the sealing cover 7 to move downward. When the bottom of the sealing baffle 15 and the shield 16 are attached to the top of the connecting shell 4, the second filter screen 5 is separated from the inside of the filter barrel 1. When the sealing baffle 15 and the shield 16 encounter resistance during their descent, the sealing baffle 15 and the shield 16 respectively squeeze the auxiliary spring 25 and the second rectangular slider 26. Since multiple sealing baffles 15 are provided, the multiple sealing baffles 15 are distributed at different heights according to their positions. Then, the first drive motor 21 and the second drive motor 41 are activated. The output end of the second drive motor 41 drives the connecting shaft 4. The swing arm 39 of the belt swings back and forth at a 90-degree angle, thereby causing the sweeping arm 37 to swing back and forth. This allows the sweeping arm 37 to clean the dirt at the bottom of the sealing baffle 15. The first drive motor 21 starts and drives the second fixed ring 18 to drive the auxiliary seat 40 and the rotating ring 13 to rotate in a circle through the rectangular rod 17. This allows the bottom of the sealing baffle 15 to be cleaned, thus isolating the shield 16 from the outside world. After the sweeping arm 37 cleans the dirt obstructing the bottom of the shield 16, the shield 16 can completely isolate the second filter screen 5 from the outside world. Then the discharge valve 11 is opened, allowing the dirt accumulated at the bottom of the second filter screen 5 to be discharged to the outside world through the discharge valve 11. No manual operation is required, thus avoiding dirt accumulation inside the filter bucket 1 and causing blockage, thereby improving the smoothness of sewage filtration.

[0055] S2. The pull rope 43 initially has one end reserved. When the discharge valve 11 discharges the dirt, the output end of the second drive motor 41 continues to swing back and forth, so that the swing rod 39 gradually tightens the pull rope 43 during the reciprocating rotation. When the pull rope 43 is tightened, the stirring rod 32 driven by it rotates. In this way, the stirring rod 32 clears the inside of the rotating ring 13 and the guide pipe 12, thereby avoiding blockage caused by the discharge of dirt.

[0056] S3. When the retracting rod 36 drives the cleaning rod 37 to swing back and forth, after the cleaning rod 37 separates from the sealing baffle 15 and the shield 16, when the sealing baffle 15 and the shield 16 are attached to the top of the connecting shell 4, the cleaning rod 37 is resisted when it returns to its original position and contacts the inner side of the shield 16. This causes the cleaning rod 37 to squeeze the compression spring 38 and slide on the outer wall of the retracting rod 36, so that the cleaning rod 37 can automatically retract. This allows the retracting rod 36 and the cleaning rod 37 to operate normally. When the shield 16 isolates the second filter screen 5 from the outside, the squeezing spring 38 and the cleaning rod 37 swing and rotate in a circular motion, so that the dirt accumulated on the top of the second filter screen 5 can be swept into the guide pipe 12, so that the dirt can be actively discharged, thereby improving the dirt discharge effect.

[0057] S4. When the sealing cover 7 moves downward, the first filter screen 3 moves downward through the connecting rod 8. This causes the T-shaped block 34 and the protrusion 6 to slide inside the connecting shell 4 and the T-shaped guide shell 35, causing the first filter screen 3 and the connecting shell 4 to misalign. This prevents dirt from obstructing the sealing baffle 15 and the connecting shell 4 during the continuous filtration of sewage, thus ensuring the smoothness of the sealing baffle 15 and the connecting shell 4.

[0058] S5. While the rotating ring 13 rotates in a circular motion, multiple high-pressure nozzles 30 on the sealing and shielding ring 27 also rotate in a circular motion. The high-pressure water jets sprayed by the multiple high-pressure nozzles 30 impact the mesh of the first filter screen 3, thereby cleaning the dirt clogging the mesh of the first filter screen 3 and improving the filtration efficiency of the first filter screen 3 for sewage.

[0059] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A self-cleaning filtration system for wastewater treatment, comprising a filter cartridge (1), characterized in that, The bottom of the filter barrel (1) is fixedly connected to a bottom shell (2). Two drain valves (10) are installed inside the bottom shell (2). A discharge valve (11) is fixedly connected to the discharge port of the bottom shell (2). A first filter screen (3) is slidably connected to the inner side of the bottom shell (2). A connecting shell (4) is provided on the inner side of the first filter screen (3). A misalignment auxiliary mechanism is provided between the first filter screen (3) and the connecting shell (4). A second filter screen (5) is fixedly connected to the inner side of the connecting shell (4). A shielding device is provided above for shielding the second filter screen (5). A sweeper that cooperates with the shielding device is provided on the top of the connecting shell (4). A guide pipe (12) is fixedly connected to the top of the discharge valve (11). A rotating ring (13) is rotatably connected to the top of the guide pipe (12). The rotating ring (13) is attached to the inner side of the connecting shell (4) and rotatably connected to the connecting shell (4). An agitator for clearing the inside of the guide pipe (12) is provided on the inner side of the rotating ring (13). An impact cleaning mechanism for cleaning the inside of the mesh of the first filter screen (3) is provided below the first filter screen (3); The shielding device includes a fixed base (9) fixedly connected inside the filter barrel (1). A hydraulic cylinder (20) is installed on the inner side of the fixed base (9). The output end of the hydraulic cylinder (20) extends through to the bottom of the fixed base (9) and is fixedly connected to a sealing cover (7). A second rectangular sleeve (23) is fixedly connected to the outer wall of the sealing cover (7). A first rectangular slider (22) is slidably connected to the inner side of the second rectangular sleeve (23). A connecting spring (24) is fixedly connected to the top of the first rectangular slider (22). One end of the connecting spring (24) is fixedly connected to the second rectangular sleeve (23). A shielding cover (16) is fixedly connected to the bottom end of the first rectangular slider (22). The shielding cover (16) is attached to the outer wall of the sealing cover (7). A dividing blocking component is provided on the outer wall of the shielding cover (16). The segmentation and blocking assembly includes a first fixing ring (14) fixedly connected to the outer wall of the shield (16), a second rectangular slider (26) slidably connected to the inner side of the first fixing ring (14), an auxiliary spring (25) fixedly connected to the top of the second rectangular slider (26), one end of the auxiliary spring (25) fixedly connected to the first fixing ring (14), and a sealing baffle (15) fixedly connected to the bottom of the second rectangular slider (26). The sweeper includes an auxiliary seat (40) fixedly connected to the top of the rotating ring (13). A second drive motor (41) is installed on the inner side of the auxiliary seat (40). The output end of the second drive motor (41) is connected to a connecting shaft (42). One end of the connecting shaft (42) passes through the inner side of the auxiliary seat (40) and is fixedly connected to a swing rod (39). One end of the swing rod (39) is fixedly connected to a retractable rod (36). A cleaning rod (37) is provided on the outer wall of the retractable rod (36). A first drive motor (21) is installed on the inner side of the sealing cover (7). The output end of the first drive motor (21) passes through the outer side of the sealing cover (7) and is fixedly connected to a second fixing ring (18). A first rectangular sleeve (19) is fixedly connected to the bottom of the second fixing ring (18). A rectangular rod (17) is slidably connected to the inner side of the first rectangular sleeve (19). The bottom of the rectangular rod (17) is fixedly connected to the auxiliary seat (40). The stirring auxiliary component includes two fixed sleeves (46) fixedly connected to the inner side of the rotating ring (13). A rotating shaft (45) is rotatably connected to the inner side of each of the two fixed sleeves (46). A torsion spring (47) is installed between the rotating shaft (45) and the fixed sleeve (46). One end of the rotating shaft (45) passes through the inside of the rotating ring (13) and is fixedly connected to a stirring rod (32). One end of the stirring rod (32) is fixedly connected to a pulling rope (43). One end of the pulling rope (43) passes through the inner side of the auxiliary seat (40) and is fixedly connected to the swing rod (39). Two auxiliary wheels (44) are rotatably connected to the inner side of the auxiliary seat (40). The two auxiliary wheels (44) are attached to both sides of the pulling rope (43). The impact removal mechanism includes a sealing shielding ring (27) fixedly connected to the outer wall of the rotating ring (13). A first support (28) and a second support (29) are fixedly connected to both sides of the sealing shielding ring (27). A high-pressure nozzle (30) is installed on the inner side of the second support (29), and the high-pressure nozzle (30) is located below the first filter screen (3). A stirring rod (32) is fixedly connected to the top of the first support (28). A movable rod (31) is slidably connected to the inner side of the stirring rod (32). The top of the movable rod (31) is fixedly connected to the second support (29). A compression spring (33) is fixedly connected to the bottom of the movable rod (31). The bottom of the compression spring (33) is fixedly connected to the first support (28). The top of the sealing shielding ring (27) is attached to the bottom of the connecting shell (4). The misalignment auxiliary mechanism includes a T-shaped guide shell (35) fixedly connected to the bottom of the connecting shell (4). A T-shaped block (34) is slidably connected to the inner side of the connecting shell (4) and the T-shaped guide shell (35). A protrusion (6) is fixedly connected to one side of the T-shaped block (34). A limiting groove matching the protrusion (6) is opened on the inner side of the connecting shell (4) and the T-shaped guide shell (35). A connecting rod (8) is fixedly connected to the top of the first filter screen (3). One end of the connecting rod (8) is fixedly connected to the second rectangular sleeve (23).

2. The self-cleaning filtration system for wastewater treatment according to claim 1, characterized in that, The inner side of the sweeping rod (37) is provided with a rectangular groove that matches the retractable rod (36). The retractable rod (36) is slidably connected to the inner side of the sweeping rod (37). One end of the retractable rod (36) is fixedly connected to a compression spring (38), and one end of the compression spring (38) is fixedly connected to the sweeping rod (37).

3. The self-cleaning filtration system for wastewater treatment according to claim 2, characterized in that, Multiple high-pressure nozzles (30) are installed on the inner side of each of the two second supports (29). The gap between every two high-pressure nozzles (30) installed on the inner side of one second support (29) coincides with the position of the high-pressure nozzle (30) installed on the inner side of the other second support (29).

4. A self-cleaning filtration process for wastewater treatment, characterized in that, The self-cleaning filtration system for wastewater treatment according to claim 3 includes the following steps: S1. The cleaning rod (37) is initially located below the sealing baffle (15), and the shield (16) is initially located above the connecting shell (4). First, during the process of sewage being filtered through the first filter screen (3) and the second filter screen (5), the hydraulic cylinder (20) can be activated intermittently. The output end of the hydraulic cylinder (20) drives the shield (16) and the sealing baffle (15) of the sealing cover (7) to move downward. When the bottom of the sealing baffle (15) and the shield (16) are attached to the top of the connecting shell (4), The second filter screen (5) is separated from the inside of the filter barrel (1). When the sealing baffle (15) and the shield (16) encounter resistance during their descent, the sealing baffle (15) and the shield (16) respectively squeeze the auxiliary spring (25) and the second rectangular slider (26). Since multiple sealing baffles (15) are provided, the multiple sealing baffles (15) are distributed at different heights according to their positions. Then, the first drive motor (21) and the second drive motor (41) are started. (41) The output end drives the swing rod (39) driven by the connecting shaft (42) to swing back and forth at a 90-degree angle, thereby causing the cleaning rod (37) to swing back and forth, so that the cleaning rod (37) cleans the dirt at the bottom of the sealing baffle (15). The first drive motor (21) starts to drive the second fixed ring (18) to drive the auxiliary seat (40) and the rotating ring (13) to rotate in a circle through the rectangular rod (17), so that the bottom of the sealing baffle (15) can be cleaned, thereby making the sealing baffle (15) clean. The baffle (15) isolates the shield (16) from the outside world, so that after the cleaning rod (37) cleans the dirt obstructed at the bottom of the shield (16), the shield (16) can completely isolate the second filter screen (5) from the outside world. Then the discharge valve (11) is opened, so that the dirt accumulated at the bottom of the second filter screen (5) can be discharged to the outside world through the discharge valve (11). No manual operation is required, thereby avoiding dirt accumulation inside the filter bucket (1) and causing blockage, thus improving the smoothness of sewage filtration. S2. The pull rope (43) initially has a reserved length at one end. When the discharge valve (11) discharges the dirt, the output end of the second drive motor (41) continues to swing back and forth, so that the swing rod (39) gradually tightens the pull rope (43) during the back and forth rotation. When the pull rope (43) is tightened, the stirring rod (32) it drives rotates, thereby clearing the inside of the rotating ring (13) and the guide pipe (12) through the stirring rod (32), thus avoiding blockage caused by the discharge of dirt. S3. When the retracting rod (36) drives the cleaning rod (37) to reciprocate, after the cleaning rod (37) separates from the sealing baffle (15) and the shield (16), when the sealing baffle (15) and the shield (16) are attached to the top of the connecting shell (4), the cleaning rod (37) is resisted when it returns to its original position and contacts the inner side of the shield (16), thereby causing the cleaning rod (37) to squeeze the compression spring (38) and slide on the outer wall of the retracting rod (36). This allows the cleaning rod (37) to retract automatically, enabling the retracting rod (36) and the cleaning rod (37) to operate normally. When the shield (16) isolates the second filter screen (5) from the outside, the squeezing spring (38) and the cleaning rod (37) swing and rotate, thereby sweeping the dirt accumulated on the top of the second filter screen (5) into the guide tube (12), so that the dirt can be actively discharged, thereby improving the dirt discharge effect. S4. When the sealing cover (7) moves downward, the first filter screen (3) is driven to move downward through the connecting rod (8). The T-shaped block (34) and the protrusion (6) slide inside the connecting shell (4) and the T-shaped guide shell (35), causing the first filter screen (3) and the connecting shell (4) to be misaligned. This avoids the dirt from causing obstruction when the sealing baffle (15) and the connecting shell (4) are attached during the continuous filtration of sewage, thus ensuring the smoothness of the attachment between the sealing baffle (15) and the connecting shell (4). S5. While the rotating ring (13) rotates in a circle, it also rotates in a circle through the multiple high-pressure nozzles (30) carried by the sealing and shielding ring (27). The high-pressure water jets sprayed by the multiple high-pressure nozzles (30) impact the mesh of the first filter screen (3), thereby cleaning the dirt clogging the mesh of the first filter screen (3) and improving the filtration efficiency of the first filter screen (3) for sewage.

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