A filtering device for purifying river sewage

Abstract

The present invention relates to the technical field of sewage treatment equipment, and proposes a filtering device for river sewage purification, comprising: a filter box and a water inlet hopper fixedly connected to the water inlet of the filter box, wherein a filter membrane, a filter bag and an ultraviolet sterilization lamp are respectively installed inside the filter box; a closed door, wherein the closed door is installed at the discharge port of the filter box; a partition, wherein the partition is fixedly connected to the inside of the filter box, a placement groove is arranged between the partition and the closed door, a filter net is fixedly connected to one end of the partition, and a flushing auxiliary part for flushing the filter net is arranged below the filter net. The present invention sets a switching separator so that sewage no longer flows through a blocked filter net, and further, when a filter net is blocked, it can be switched to another filter net for use in time, thereby enabling sewage filtration to be carried out continuously, thereby improving the overall practicality of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment equipment, and in particular to a filtering device for purifying river sewage. Background Art

[0002] With the continuous development of living standards and industrial production, more and more garbage and sewage are continuously discharged into rivers, polluting the river water. The river has become a gathering place for sewage. In order to protect the environment, relevant units need to purify the sewage in the river so that the sewage can be purified for reuse. Filtration is an important process for sewage purification. Therefore, special filtration devices are needed in the process of purifying river sewage.

[0003] The existing filtering device for sewage treatment simply filters the solid waste in the sewage. When the solid waste is large and there is a lot of it, it is easy to cause blockage in the filtering device, causing the sewage filtration to stagnate. The filtering work must be suspended before replacement, and the filtering efficiency is low. For this reason, we provide a filtering device for river sewage purification to solve the above problems. Summary of the invention

[0004] The present invention provides a filtering device for purifying river sewage, which solves the problem in the related art that the filtering device is easily clogged, causing stagnation in sewage filtration.

[0005] The technical solution of the present invention is as follows: A filtering device for purifying river sewage, comprising: a filter box and a water inlet hopper fixedly connected to the water inlet of the filter box, wherein a filter membrane, a filter bag and an ultraviolet sterilization lamp are respectively installed inside the filter box; a closed door, wherein the closed door is installed at the discharge port of the filter box; a partition, wherein the partition is fixedly connected to the inside of the filter box, a placement groove is arranged between the partition and the closed door, a filter screen is fixedly connected to one end of the partition, a flushing auxiliary part for flushing the filter screen is arranged below the filter screen, a V-shaped baffle is fixedly connected to the inner side of the filter box, two water inlet troughs are provided on the inner side of the V-shaped baffle, and a switching separator for switching between blocking and opening the water inlet trough is arranged on one side of the two water inlet troughs; a shielding protection mechanism is located on the inner side of the water inlet hopper, and is used to shield the water inlet of the water inlet hopper.

[0006] As a further scheme of the present invention: the switching separator includes a second sealing baffle arranged on one side of the two water inlet grooves, a second fixing seat is fixedly connected to the top of the inner part of the filter box, a first driving motor is installed on one side of the second fixing seat, the output end of the first driving motor is connected to a one-way threaded screw, the outer wall of the one-way threaded screw is threadedly connected to a second sliding block, and the second sliding block is fixedly connected to one of the second sealing baffles, a sliding rod is fixedly connected to the bottom of the other second sliding block, and one end of the sliding rod passes through one side of the V-shaped baffle and is slidably connected to the V-shaped baffle, a second rectangular guide rod is fixedly connected to the inner side of the second fixing seat, and the second sliding block is slidably connected to the outer wall of the second rectangular guide rod, and an unlocker for locking and unlocking the sliding rod is provided on the inner side of the filter box.

[0007] As a further solution of the present invention: the switching separator also includes an auxiliary block fixedly connected to the bottom of another second sealing baffle, the inner side of the auxiliary block is respectively fixedly connected with a bellows, a second connecting spring and a connecting rope, one end of the bellows and the second connecting spring are respectively fixedly connected to the V-shaped baffle, the other end of the connecting rope passes through the inner side of the V-shaped baffle and is fixedly connected to one of the second sealing baffles, the inner side of the V-shaped baffle is fixedly connected with a second auxiliary frame, the inner side of the second auxiliary frame is rotatably connected to two auxiliary wheels, and the two auxiliary wheels are respectively attached to the inner side and the outer side of the connecting rope.

[0008] As a further solution of the present invention: the unlocker includes a third fixed seat fixedly connected to the inner side of the filter box, the inner side of the third fixed seat is slidably connected with a pin, the inner side of the sliding rod is provided with a fixing hole matching the pin, the top of the pin passes through the upper part of the third fixed seat and is fixedly connected with a connecting column, the inner side of the connecting column is provided with an inclined groove, a third connecting spring is installed between the connecting column and the third fixed seat, one end of the second sealing baffle is fixedly connected with a connecting rod, and the inner side of the connecting rod is fixedly connected with a second spherical rod.

[0009] As a further solution of the present invention: the shielding and protection mechanism includes a rotating shaft rotatably connected to the inner side of the water inlet hopper, one end of the rotating shaft passes through the outside of the water inlet hopper and a torsion spring is installed between the water inlet hopper, a first sealing baffle is arranged on the inner side of the water inlet hopper, and a fine-tuning auxiliary component for adjusting the position of the first sealing baffle is arranged between the rotating shaft and the first sealing baffle.

[0010] As a further scheme of the present invention: the shielding and protection mechanism also includes a first fixed seat fixedly connected to one side of the water inlet bucket, a rectangular rod is slidably connected to the inner side of the first fixed seat, one end of the rectangular rod passes through the top of the first fixed seat and an auxiliary spring is installed between the first fixed seat, the other end of the rectangular rod passes through the bottom of the first fixed seat and is fixedly connected to a sliding frame, both ends of the sliding frame are rotatably connected to a power wheel, the outer wall of the rotating shaft is fixedly connected to a connecting plate, one side of the sliding frame is fixedly connected to a power rod, and one end of the power rod passes through the inner side of the filter box and is slidably connected to the filter box, one end of the power rod is rotatably connected to a guide wheel, one side of the second sliding block is fixedly connected to a special-shaped rod, and one end of the special-shaped rod is fixedly connected to a trapezoidal block.

[0011] As a further solution of the present invention: the fine-tuning auxiliary component includes a groove opened on the inner side of the water inlet bucket, an arc block is installed on the inner side of the groove, a first spherical rod is slidably connected to the inner side of the rotating shaft, and one end of the first spherical rod passes through the outside of the rotating shaft, a connecting block is fixedly connected to one side of the closed door, and one end of the connecting block is fixedly connected to the first sealing baffle, one end of the connecting block is fixedly connected to a first connecting spring, and one end of the first connecting spring is fixedly connected to the rotating shaft.

[0012] As a further solution of the present invention: the flushing auxiliary part includes a second driving motor installed on one side of the filter box, the output end of the second driving motor is connected to a reciprocating screw, and one end of the reciprocating screw passes through the interior of the filter box and is rotatably connected to the filter box, the inner side of the filter box is fixedly connected to a first rectangular guide rod, the outer wall of the first rectangular guide rod is slidably connected to a first slider, and the first slider is installed on the outer wall of the reciprocating screw, one end of the first slider is fixedly connected to a first auxiliary frame, the inner side of the first auxiliary frame is fixedly connected to a guide pipe, the output end of the guide pipe is installed with a high-pressure nozzle, a protective cover is fixedly connected to one side of the first auxiliary frame, a micro water pump is installed inside the protective cover, the output end of the micro water pump is connected to the guide pipe, and the output end of the micro water pump passes through the outside of the protective cover.

[0013] The working principle and beneficial effects of the present invention are:

[0014] 1. By setting a switching separator, the output end of the first driving motor drives the one-way threaded screw to rotate, and then drives the second slider to drive the second sealing baffle to move into the filter box, so as to open the water inlet tank, so that the sewage can be filtered through the unused filter screen. The second sealing baffle moves while pulling the connecting rope. When the connecting rope is straightened, the second sealing baffle continues to move, thereby pulling the other second sealing baffle. When one second sealing baffle stops moving, the other second sealing baffle is blocked at the end of the other water inlet tank, so that the sewage no longer flows through the blocked filter screen, and when one filter screen is blocked, it can be switched to another filter screen for use in time, so that the sewage filtration can be carried out continuously, thereby improving the overall practicality of the device;

[0015] 2. By setting a shielding and protection mechanism, when the second slider moves toward the inside of the filter box, the trapezoidal block is driven to move synchronously through the special-shaped rod, and the guide wheel is driven to drive the power rod upward under the action of the inclined surface at one end of the trapezoidal block, thereby driving the power wheel upward through the sliding frame, and then pushing the connecting plate to drive the first sealing baffle to rotate toward the inside of the water inlet bucket through the rotating shaft. When the connecting rope is pulled straight, the guide wheel is against the top plane of the trapezoidal block. At this time, the water inlet bucket rotates 90 degrees and shields the water inlet of the water inlet bucket, so that the second sealing baffle is cooperated with during the switching and opening process to prevent large impurities in the sewage from entering, thereby ensuring the stability of the switching, avoiding the second sealing baffle from being squeezed with the impurities entering during the blocking process to cause blocking, thereby improving the overall stability of the device;

[0016] 3. By setting a shielding and protection mechanism, when the rotating shaft drives the first sealing baffle to seal the inside of the water inlet hopper, it drives the first spherical rod to rotate. When the spherical surface at one end of the first spherical rod is separated from the arc block, the first connecting spring can push the connecting block to drive the axis of the first sealing baffle to align with the rotating shaft, so that the first sealing baffle can be completely sealed inside the water inlet hopper. The above steps are reversed so that a gap is left between the back of the water inlet hopper and the water inlet hopper after it is opened, so that large impurities accumulated on the back of the first sealing baffle during the entry of sewage can slide into the filter box under the action of the gap, thereby ensuring the stability of the closure of the first sealing baffle.

[0017] 4. By setting up a flushing auxiliary part, when the second sealing baffle isolates the filter screen at the blocked position from the outside world, the second drive motor and the micro water pump can be started, and the output end of the second drive motor drives the reciprocating screw to rotate, so that the high-pressure nozzle is driven by the first slider to move back and forth laterally, and at the same time, the water filtered out impurities is transported to the inside of the guide pipe through the micro water pump, so that the high-pressure water is sprayed out by the high-pressure nozzle to impact the mesh of the blocked filter screen, so as to dredge it, without the need for manual disassembly and replacement by staff, thereby increasing the service life of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 It is a schematic diagram of the internal structure of the filter box of the present invention;

[0022] Figure 4 This is a schematic diagram of the inner structure of the water inlet bucket of the present invention;

[0023] Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle;

[0024] Figure 6 It is a schematic diagram of the structure of the switching separator of the present invention;

[0025] Figure 7 For the present invention Figure 6 Enlarged view of point C in the middle;

[0026] Figure 8 It is a schematic diagram of the structure of the flushing auxiliary part of the present invention;

[0027] Fig. 9 It is a schematic diagram of the pushing of the trapezoidal block of the present invention;

[0028] Fig.10 It is a schematic diagram of the structure of the end portion of the rotating shaft of the present invention;

[0029] Fig.11 It is a schematic diagram of the insertion of the second spherical rod of the present invention.

[0030] In the figure: 1, filter box; 2, water inlet bucket; 3, closed door; 4, rotating shaft; 5, torsion spring; 6, connecting plate; 7, sliding frame; 8, power wheel; 9, power rod; 10, rectangular rod; 11, first fixed seat; 12, auxiliary spring; 13, ultraviolet germicidal lamp; 14, filter bag; 15, filter membrane; 16, partition; 17, placement groove; 18, filter net; 19, water inlet groove; 20, second fixed seat; 21, first drive motor; 22, one-way threaded screw; 23, first sealing baffle; 24, first auxiliary frame; 25, first rectangular guide rod; 26, reciprocating screw; 27, first slider; 28, second sealing baffle; 29, groove; 30 , arc block; 31, first spherical rod; 32, connecting block; 33, first connecting spring; 34, second rectangular guide rod; 35, second slider; 36, auxiliary block; 37, bellows; 38, connecting rope; 39, second connecting spring; 40, slide rod; 41, third fixed seat; 42, latch; 43, connecting column; 44, connecting rod; 45, third connecting spring; 46, second auxiliary frame; 47, auxiliary wheel; 48, guide pipe; 49, high-pressure nozzle; 50, micro water pump; 51, protective cover; 52, trapezoidal block; 53, special-shaped rod; 54, guide wheel; 55, second spherical rod; 56, inclined groove; 57, V-shaped baffle; 58, second drive motor. DETAILED DESCRIPTION

[0031] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1

[0033] See also Figures 1 to 11The present embodiment provides a filtering device for purifying river sewage, comprising: a filter box 1 and a water inlet hopper 2 fixedly connected to the water inlet of the filter box 1, wherein a filter membrane 15, a filter bag 14 and an ultraviolet sterilization lamp 13 are respectively installed inside the filter box 1; a closed door 3, wherein the closed door 3 is installed at the discharge port of the filter box 1; a partition 16, wherein the partition 16 is fixedly connected to the inside of the filter box 1, a placement groove 17 is arranged between the partition 16 and the closed door 3, a filter screen 18 is fixedly connected to one end of the partition 16, a V-shaped baffle 57 is fixedly connected to the inner side of the filter box 1, two water inlet grooves 19 are arranged on the inner side of the V-shaped baffle 57, and a device for switching the water inlet grooves 19 is arranged on one side of the two water inlet grooves 19 A switching separator for blocking and opening, the switching separator includes a second sealing baffle 28 arranged on one side of the two water inlet grooves 19, a second fixing seat 20 is fixedly connected to the top of the filter box 1, a first driving motor 21 is installed on one side of the second fixing seat 20, an output end of the first driving motor 21 is connected to a one-way threaded screw 22, an outer wall of the one-way threaded screw 22 is threadedly connected to a second slider 35, and the second slider 35 is fixedly connected to a second sealing baffle 28, a sliding rod 40 is fixedly connected to the bottom of the other second slider 35, and one end of the sliding rod 40 passes through one side of the V-shaped baffle 57 and is slidably connected to the V-shaped baffle 57, and the inner side of the second fixing seat 20 is fixedly connected to the first sealing baffle 28. The second rectangular guide rod 34 is provided with a second slider 35 which is slidably connected to the outer wall of the second rectangular guide rod 34. An unlocker for locking and unlocking the slide rod 40 is provided on the inner side of the filter box 1. The switching separator also includes an auxiliary block 36 which is fixedly connected to the bottom of another second sealing baffle 28. The inner sides of the auxiliary block 36 are respectively fixedly connected with a bellows 37, a second connecting spring 39 and a connecting rope 38. One end of the bellows 37 and the second connecting spring 39 are respectively fixedly connected to the V-shaped baffle 57. The other end of the connecting rope 38 passes through the inner side of the V-shaped baffle 57 and is fixedly connected to a second sealing baffle 28. The inner side of the V-shaped baffle 57 is fixedly connected with a second auxiliary frame 46. The inner side of the filter box 46 is rotatably connected to two auxiliary wheels 47, and the two auxiliary wheels 47 are respectively attached to the inner side and the outer side of the connecting rope 38. The unlocker includes a third fixing seat 41 fixedly connected to the inner side of the filter box 1, and the inner side of the third fixing seat 41 is slidably connected to a latch 42. A fixing hole matching the latch 42 is provided on the inner side of the slide rod 40, and the top of the latch 42 passes through the upper part of the third fixing seat 41 and is fixedly connected to a connecting column 43. An inclined groove 56 is provided on the inner side of the connecting column 43. A third connecting spring 45 is installed between the connecting column 43 and the third fixing seat 41. One end of a second sealing baffle 28 is fixedly connected to a connecting rod 44, and the inner side of the connecting rod 44 is fixedly connected to a second spherical rod 55.

[0034] First, when the sewage enters the water inlet hopper 2, it is filtered by the filter screen 18, and then the dirt in the sewage that has filtered out large impurities is adsorbed by the filter membrane 15 and the filter bag 14, and then sterilized by the ultraviolet sterilization lamp 13 before being discharged, thereby achieving the function of filtering and purifying the sewage;

[0035] A flow sensor can be arranged inside the filter box 1 below the filter screen 18. The flow sensor senses the flow rate of the sewage filtered from the filter screen 18. When the flow rate of the sewage is low, the first drive motor 21 can be started by the PLC controller. The connection position between the connecting rope 38 and the second sealing baffle 28 is in a loose state. When the filter screen 18 is clogged after long-term use and the garbage inside it needs to be processed, the first drive motor 21 can be started. The output end of the first drive motor 21 drives the one-way threaded screw 22 to rotate, thereby driving the second slider 35 to drive the second sealing baffle 28 to move toward the inside of the filter box 1, thereby opening the water inlet trough 19. , so that the sewage can be filtered through the unused filter screen 18, and the second sealing baffle 28 moves while pulling the connecting rope 38. When the connecting rope 38 is straightened, the second sealing baffle 28 continues to move, thereby pulling the other second sealing baffle 28. When one second sealing baffle 28 stops moving, the other second sealing baffle 28 is blocked at the end of the other water inlet tank 19, so that the sewage no longer flows through the blocked filter screen 18, and when one filter screen 18 is blocked, it can be switched to another filter screen 18 in time for use, so that the sewage filtration can be carried out continuously, thereby improving the overall practicality of the device;

[0036] When one second sealing baffle 28 is moved away from the water inlet groove 19 and the other second sealing baffle 28 is blocked on the other water inlet groove 19, the fixing hole on the inner side of the slide rod 40 is moved to the bottom of the latch 42, so that the third connecting spring 45 is no longer subject to external force to push the connecting column 43 to drive the latch 42 to insert into the fixing hole on the inner side of the slide rod 40, thereby fixing it. When one second sealing baffle 28 is reset, the latch 42 is inserted into the fixing hole on the inner side of the slide rod 40, so that the other second sealing baffle 28 will not When the second spherical rod 55 is reset and contacts the inner inclined surface of the inclined groove 56, the connecting column 43 is pushed to drive the latch 42 to move upward. When a second sealing baffle 28 blocks the water inlet groove 19, the latch 42 is moved out from the inner fixing hole of the sliding rod 40, so that the other second sealing baffle 28 is no longer fixed, and then the other second sealing baffle 28 is pushed to reset under the action of the second connecting spring 39, so that the two second sealing baffles 28 can be switched and blocked, thereby ensuring the continuous operation of the equipment.

[0037] Example 2

[0038] The shielding and protection mechanism is located on the inner side of the water inlet bucket 2 and is used to shield the water inlet of the water inlet bucket 2. The shielding and protection mechanism includes a rotating shaft 4 rotatably connected to the inner side of the water inlet bucket 2, one end of the rotating shaft 4 penetrates the outside of the water inlet bucket 2 and a torsion spring 5 is installed between the water inlet bucket 2, a first sealing baffle 23 is arranged on the inner side of the water inlet bucket 2, and a fine-tuning auxiliary component for adjusting the position of the first sealing baffle 23 is arranged between the rotating shaft 4 and the first sealing baffle 23. The shielding and protection mechanism also includes a first fixed seat 11 fixedly connected to one side of the water inlet bucket 2, and a rectangular rod 10 is slidably connected to the inner side of the first fixed seat 11, and one end of the rectangular rod 10 is The end of the rectangular rod 10 penetrates through the top of the first fixed seat 11 and an auxiliary spring 12 is installed between the first fixed seat 11, the other end of the rectangular rod 10 penetrates through the bottom of the first fixed seat 11 and is fixedly connected to the sliding frame 7, and the two ends of the sliding frame 7 are respectively rotatably connected to a power wheel 8, the outer wall of the rotating shaft 4 is fixedly connected to the connecting plate 6, one side of the sliding frame 7 is fixedly connected to a power rod 9, and one end of the power rod 9 penetrates through the inner side of the filter box 1 and is slidably connected to the filter box 1, one end of the power rod 9 is rotatably connected to a guide wheel 54, one side of the second slider 35 is fixedly connected to a special-shaped rod 53, and one end of the special-shaped rod 53 is fixedly connected to a trapezoidal block 52;

[0039] When the second slider 35 moves toward the inside of the filter box 1, the trapezoidal block 52 is driven to move synchronously through the special-shaped rod 53. The guide wheel 54 is pushed by the inclined surface of one end of the trapezoidal block 52 to drive the power rod 9 to move upward, thereby driving the power wheel 8 to move upward through the sliding frame 7, and then pushing the connecting plate 6 to drive the first sealing baffle 23 to rotate toward the inside of the water inlet bucket 2 through the rotating shaft 4. When the connecting rope 38 is pulled straight, the guide wheel 54 is against the top plane of the trapezoidal block 52. At this time, the water inlet bucket 2 rotates ninety degrees and covers the water inlet of the water inlet bucket 2, so that the second sealing baffle 28 is used to switch and open. The large impurities in the sewage cannot enter, thereby ensuring the stability of the switching, avoiding the second sealing baffle 28 from being squeezed with the impurities entering during the blocking process to cause blocking, thereby improving the overall stability of the device;

[0040] When the second sealing baffle 28 is about to block the water inlet groove 19, the guide wheel 54 contacts the inclined surface of the other end of the trapezoidal block 52, so that the pressure on the auxiliary spring 12 is gradually reduced, thereby pushing the sliding frame 7 to reset, and then the torsion spring 5 can drive the first sealing baffle 23 to reset through the rotating shaft 4, thereby opening the water inlet of the water inlet bucket 2.

[0041] Example 3

[0042] The fine-tuning auxiliary component includes a groove 29 provided on the inner side of the water inlet bucket 2, an arc block 30 is installed on the inner side of the groove 29, a first spherical rod 31 is slidably connected to the inner side of the rotating shaft 4, and one end of the first spherical rod 31 passes through the outside of the rotating shaft 4, a connecting block 32 is fixedly connected to one side of the closed door 3, and one end of the connecting block 32 is fixedly connected to the first sealing baffle 23, and one end of the connecting block 32 is fixedly connected to the first connecting spring 33, and one end of the first connecting spring 33 is fixedly connected to the rotating shaft 4;

[0043] When the rotating shaft 4 drives the first sealing baffle 23 to seal the inside of the water inlet hopper 2, it drives the first spherical rod 31 to rotate. When the spherical surface at one end of the first spherical rod 31 is separated from the arc block 30, the first connecting spring 33 can push the connecting block 32 to drive the axis of the first sealing baffle 23 to align with the rotating shaft 4, so that the first sealing baffle 23 can be completely sealed inside the water inlet hopper 2. The above steps are reversed so that a gap is left between the back of the water inlet hopper 2 and the water inlet hopper 2 after it is opened, so that large impurities accumulated on the back of the first sealing baffle 23 during the entry of sewage can slide into the inside of the filter box 1 under the action of the gap, thereby ensuring the stability of the closure of the first sealing baffle 23.

[0044] Example 4

[0045] A flushing auxiliary part for flushing the filter 18 is provided below the filter 18, and the flushing auxiliary part includes a second drive motor 58 installed on one side of the filter box 1, and the output end of the second drive motor 58 is connected to the reciprocating screw 26, and one end of the reciprocating screw 26 penetrates into the interior of the filter box 1 and is rotatably connected to the filter box 1, and a first rectangular guide rod 25 is fixedly connected to the inner side of the filter box 1, and a first slider 27 is slidably connected to the outer wall of the first rectangular guide rod 25, and the first slider 27 is installed on the outer wall of the reciprocating screw 26, and one end of the first slider 27 is fixedly connected to the first auxiliary frame 24, and a guide pipe 48 is fixedly connected to the inner side of the first auxiliary frame 24, and a high-pressure nozzle 49 is installed at the output end of the guide pipe 48, and a protective cover 51 is fixedly connected to one side of the first auxiliary frame 24, and a micro water pump 50 is installed inside the protective cover 51, and the output end of the micro water pump 50 is connected to the guide pipe 48, and the output end of the micro water pump 50 penetrates to the outside of the protective cover 51;

[0046] When the second sealing baffle 28 isolates the filter screen 18 in the blocked position from the outside world, the second drive motor 58 and the micro water pump 50 can be started. The output end of the second drive motor 58 drives the reciprocating screw 26 to rotate, thereby driving the high-pressure nozzle 49 to move back and forth laterally through the first slider 27. At the same time, the water filtered out by impurities is transported to the inside of the guide tube 48 through the micro water pump 50, so that the high-pressure water is sprayed through the high-pressure nozzle 49 to impact the mesh of the blocked filter screen 18, thereby clearing it. There is no need for manual disassembly and replacement by staff, thereby increasing the service life of the filter screen 18.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A filtering device for purifying river sewage, characterized in that: include; A filter box (1) and a water inlet hopper (2) fixedly connected to the water inlet of the filter box (1), wherein a filter membrane (15), a filter bag (14) and an ultraviolet sterilization lamp (13) are respectively installed inside the filter box (1); A closed door (3), the closed door (3) being installed at the discharge port of the filter box (1); A partition (16), the partition (16) being fixedly connected to the inside of the filter box (1), a placement groove (17) being provided between the partition (16) and the closed door (3), a filter screen (18) being fixedly connected to one end of the partition (16), a flushing auxiliary part for flushing the filter screen (18) being provided below the filter screen (18), a V-shaped baffle (57) being fixedly connected to the inside of the filter box (1), two water inlet grooves (19) being provided on the inside of the V-shaped baffle (57), and a switch separator for switching between blocking and opening the water inlet grooves (19) being provided on one side of the two water inlet grooves (19); A shielding and protection mechanism, located on the inner side of the water inlet hopper (2), and used for shielding the water inlet of the water inlet hopper (2); The switch separator comprises a second sealing baffle (28) arranged on one side of the two water inlet grooves (19); a second fixing seat (20) is fixedly connected to the top of the filter box (1); a first drive motor (21) is installed on one side of the second fixing seat (20); an output end of the first drive motor (21) is connected to a one-way threaded screw (22); an outer wall of the one-way threaded screw (22) is threadedly connected to a second slider (35); and the second slider (35) is fixedly connected to one of the second sealing baffles (28). The bottom of the second slider (35) is fixedly connected to a slide bar (40), and one end of the slide bar (40) passes through one side of the V-shaped baffle (57) and is slidably connected to the V-shaped baffle (57). The inner side of the second fixed seat (20) is fixedly connected to a second rectangular guide bar (34), and the second slider (35) is slidably connected to the outer wall of the second rectangular guide bar (34). The inner side of the filter box (1) is provided with an unlocker for locking and unlocking the slide bar (40); The switch separator also includes an auxiliary block (36) fixedly connected to the bottom of another second sealing baffle (28), the inner side of the auxiliary block (36) is respectively fixedly connected with a bellows (37), a second connecting spring (39) and a connecting rope (38), one end of the bellows (37) and the second connecting spring (39) are respectively fixedly connected to the V-shaped baffle (57), the other end of the connecting rope (38) passes through the inner side of the V-shaped baffle (57) and is fixedly connected to one of the second sealing baffles (28), the inner side of the V-shaped baffle (57) is fixedly connected with a second auxiliary frame (46), the inner side of the second auxiliary frame (46) is rotatably connected with two auxiliary wheels (47), and the two auxiliary wheels (47) are respectively attached to the inner side and the outer side of the connecting rope (38).

2. A filtering device for river sewage purification according to claim 1, characterized in that: The unlocker comprises a third fixing seat (41) fixedly connected to the inner side of the filter box (1); a latch (42) is slidably connected to the inner side of the third fixing seat (41); a fixing hole matching the latch (42) is provided on the inner side of the slide rod (40); the top of the latch (42) passes through the upper side of the third fixing seat (41) and is fixedly connected to a connecting column (43); an inclined groove (56) is provided on the inner side of the connecting column (43); a third connecting spring (45) is installed between the connecting column (43) and the third fixing seat (41); one end of the second sealing baffle (28) is fixedly connected to a connecting rod (44); and the inner side of the connecting rod (44) is fixedly connected to a second spherical rod (55).

3. A filtering device for river sewage purification according to claim 1, characterized in that: The shielding and protection mechanism comprises a rotating shaft (4) rotatably connected to the inner side of the water inlet hopper (2), one end of the rotating shaft (4) passes through the outside of the water inlet hopper (2), and a torsion spring (5) is installed between the water inlet hopper (2), a first sealing baffle (23) is arranged on the inner side of the water inlet hopper (2), and a fine-tuning auxiliary component for adjusting the position of the first sealing baffle (23) is arranged between the rotating shaft (4) and the first sealing baffle (23).

4. A filtering device for river sewage purification according to claim 3, characterized in that: The shielding and protection mechanism further comprises a first fixing seat (11) fixedly connected to one side of the water inlet hopper (2); a rectangular rod (10) is slidably connected to the inner side of the first fixing seat (11); one end of the rectangular rod (10) passes through the upper side of the first fixing seat (11); an auxiliary spring (12) is installed between the first fixing seat (11); the other end of the rectangular rod (10) passes through the lower side of the first fixing seat (11); a sliding frame (7) is fixedly connected thereto; and both ends of the sliding frame (7) are respectively A power wheel (8) is rotatably connected, a connecting plate (6) is fixedly connected to the outer wall of the rotating shaft (4), a power rod (9) is fixedly connected to one side of the sliding frame (7), and one end of the power rod (9) penetrates the inner side of the filter box (1) and is slidably connected to the filter box (1), one end of the power rod (9) is rotatably connected to a guide wheel (54), one side of the second sliding block (35) is fixedly connected to a special-shaped rod (53), and one end of the special-shaped rod (53) is fixedly connected to a trapezoidal block (52).

5. A filtering device for river sewage purification according to claim 4, characterized in that: The fine-tuning auxiliary component comprises a groove (29) provided on the inner side of the water inlet bucket (2), an arc block (30) being installed on the inner side of the groove (29), a first spherical rod (31) being slidably connected to the inner side of the rotating shaft (4), and one end of the first spherical rod (31) passes through the outside of the rotating shaft (4), a connecting block (32) being fixedly connected to one side of the closed door (3), and one end of the connecting block (32) being fixedly connected to the first sealing baffle (23), and one end of the connecting block (32) being fixedly connected to a first connecting spring (33), and one end of the first connecting spring (33) being fixedly connected to the rotating shaft (4).

6. A filtering device for river sewage purification according to claim 1, characterized in that: The flushing auxiliary component comprises a second drive motor (58) mounted on one side of the filter box (1); the output end of the second drive motor (58) is connected to a reciprocating screw rod (26); one end of the reciprocating screw rod (26) penetrates into the interior of the filter box (1) and is rotatably connected to the filter box (1); a first rectangular guide rod (25) is fixedly connected to the inner side of the filter box (1); a first slider (27) is slidably connected to the outer wall of the first rectangular guide rod (25); and the first slider (27) is mounted on the outer side of the reciprocating screw rod (26). The first auxiliary frame (24) is fixedly connected to one end of the first sliding block (27), a guide tube (48) is fixedly connected to the inner side of the first auxiliary frame (24), a high-pressure nozzle (49) is installed at the output end of the guide tube (48), a protective cover (51) is fixedly connected to one side of the first auxiliary frame (24), a micro water pump (50) is installed inside the protective cover (51), the output end of the micro water pump (50) is connected to the guide tube (48), and the output end of the micro water pump (50) passes through the outside of the protective cover (51).

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