Pipeline water inlet filtering device

Abstract

The invention relates to the technical field of filtering, and particularly discloses a pipeline water inlet filtering device which comprises a base, a water storage tank fixedly installed at the top of the base and a plurality of water pumps, and a water pumping pipe is fixedly connected between the water pumps and the water storage tank. The filter cartridge is automatically triggered to move and switch, automatic adjustment can be carried out according to the blockage condition of the filter cartridge without manual intervention, water supply continuity of the urban water supply pipeline is ensured, meanwhile, in the moving process of the filter cartridge, the water spraying pipe automatically enters the filter cartridge along with moving of the filter cartridge, and water in the main pipe flows to the branch pipe by connecting the water diversion pipe; and the water can enter the front-side flow dividing pipe through the water guide pipe and is sprayed out through the water spraying pipe to carry out back washing on the filter cylinder, so that scale impurities on the filter cylinder can be removed, and filter holes are unblocked.

Description

Technical Field

[0001] The present invention relates to the field of filtering technology, and more particularly to a pipeline water inlet filtering device. Background Art

[0002] In order to ensure water quality, urban water supply pipelines are equipped with filtering components at the water inlet. The filtering components will perform primary filtration (coarse filtration), secondary filtration (fine filtration), precision filtration and activated carbon filtration on the water. The main purpose of the secondary filtration (fine filtration) is to further remove smaller particles in the water.

[0003] At present, the secondary filtration components at the water inlet of urban water supply pipelines generally use basket filters, T-shaped filters, automatic backwash filters, etc., and generally multiple filter units work in parallel. When a filter unit needs to be cleaned, other filter units can still continue to work normally and supply water. However, the current urban water supply pipeline inlet filtration components still have certain defects:

[0004] First of all, if the relatively intelligent automatic backwash filter encounters a power outage and lacks backup power, the filter cannot automatically backwash during the power outage. Excessive accumulation of impurities in the filter during the power outage may cause water quality to deteriorate or even clog the filter, affecting the normal flow of water. At the same time, emergency manual cleaning may be required, which increases the workload of the operator. In addition, the automatic backwash filter usually requires integrated control components such as pressure sensors and timers. The design, installation and debugging of the control system require professional technical support, and once a fault occurs, it is relatively complicated to repair.

[0005] Secondly, whether it is a basket filter or a T-shaped filter, although the filter area is large and the dirt holding capacity is strong, maintenance personnel need to regularly remove the filter from the filter body for cleaning, which increases the complexity and workload of filter cleaning. Summary of the Invention

[0006] The present invention provides a pipeline water inlet filtering device, which solves the technical problems in the prior art that the automatic backwash filter is inconvenient to work in the case of power failure and the basket filter needs to be regularly taken out for cleaning and maintenance.

[0007] The present invention provides a pipeline water inlet filtering device, comprising a base, a water storage tank fixedly installed on the top of the base and several water pumps, a water suction pipe fixedly connected between the several water pumps and the water storage tank, a water outlet pipe fixedly connected between the several water pumps, which is composed of a main pipe, a branch pipe fixedly installed on the rear side of the main pipe, a switching pipe fixedly installed on the outside of the main pipe and a connecting pipe fixedly installed on the rear side of the main pipe, a pipeline self-switching unit and a filter cartridge self-cleaning unit are provided on the water outlet pipe, the pipeline self-switching unit comprises a switching component, a trigger component for triggering the switching component and a control component for controlling the movement of the trigger component, and the filter cartridge self-cleaning unit comprises a filter cartridge moving component and a filter cartridge backflushing component.

[0008] The filter cartridge moving assembly includes two filter cartridges slidably connected in the switching tube and a barrier tube fixedly installed between the two filter cartridges. A mounting tube is fixedly installed on the front side of the main tube. A sealing plate 2 is fixedly installed on the inner wall of the mounting tube close to the main tube through a reset spring 3. Circular plates are fixedly installed on the opposite sides of the two filter cartridges. A U-shaped rod is installed between the sealing plate 2 and the circular plate on the front side. The left and right vertical sections of the U-shaped rod slide through the mounting tube and the switching tube respectively.

[0009] The filter cartridge accumulates scale due to continuous water filtering, and the water outlet speed gradually slows down. The water pressure on the left side of the outlet pipe filter cartridge gradually increases, which gradually pushes the second sealing plate forward, causing the U-shaped rod to move forward, driving the circular plate to pull the front filter cartridge, causing the barrier cylinder to move forward to block the main pipe on its left to continue to discharge water. At the same time, the rear filter cartridge moves to the connection between the switching pipe and the branch pipe, and then the filter cartridge backflush assembly backwashes the front filter cartridge.

[0010] Furthermore, the switching assembly includes a rotating shaft 1 rotatably mounted on the inner wall of the branch pipe and a baffle plate 1 fixedly sleeved on the outside of the rotating shaft 1; a rotating shaft 2 perpendicular to the rotating shaft 1 is rotatably mounted on the inner wall of the main pipe; a baffle plate 2 is fixedly sleeved on the outside of the rotating shaft 2; the front end of the rotating shaft 2 passes through the main pipe and is fixedly mounted with a ratchet one-way bearing fixedly connected to the main pipe.

[0011] Furthermore, the control assembly includes a fixed cylinder fixedly installed on the front side of the main pipe and connected to the main pipe, with an opening on the right side, and a return spring fixedly installed on the left inner wall of the fixed cylinder. A sealing plate 1 is fixedly installed near the right end of the return spring 1 and is slidably connected to the inner wall of the fixed cylinder. A moving rod is fixedly installed on the right side of the sealing plate 1.

[0012] Furthermore, the trigger assembly includes a slide rail fixedly installed on the front side of the main pipe and a spring telescopic rod fixedly installed on the top of the slide rail through a fixed plate, the telescopic section of the spring telescopic rod is fixedly installed with a slider that is slidably connected to the slide rail and has an installation groove inside, and a wedge block 1 that is slidably connected to the installation groove is fixedly installed in the installation groove through a reset spring 2.

[0013] Furthermore, a shift rod matching wedge block 1 is fixedly installed on the right end of the moving rod through a block, a wedge block 2 matching wedge block 1 is fixedly installed on the top of the slide rail, and a Z-shaped rod is fixedly installed on the right side of the slider.

[0014] Furthermore, the switching assembly also includes teeth fixedly mounted on the top of the Z-shaped rod and a driven gear fixedly mounted on the front side of the ratchet one-way bearing and meshing with the teeth. The rotating shaft one and the rotating shaft two are close to one end and pass through the branch pipe and the main pipe respectively and mesh with the driven bevel gear and the driving bevel gear.

[0015] Furthermore, two wedge-shaped telescopic blocks for limiting the baffle plate 2 are fixedly installed on the inner wall of the main pipe. The two wedge-shaped telescopic blocks limit the baffle plate 2 when the main pipe is unobstructed and when the main pipe is closed respectively. Cylinders are fixedly installed on the bottom of the branch pipe and the main pipe. A sealing plate 3 is fixedly installed in the rear cylinder through a return spring 4 and is slidably connected to the inner wall of the cylinder. A sealing plate 4 is slidably connected in the front cylinder. A connecting rod that slides through the two cylinders is jointly installed between the sealing plates 3 and 4.

[0016] Furthermore, the filter cartridge backflush assembly includes several water spray pipes fixedly mounted on the switching pipe and symmetrically arranged front to back, an annular pipe is commonly installed between the several water spray pipes located on the same side, and a water diversion pipe is fixedly mounted on the top of the main pipe.

[0017] Furthermore, two diversion pipes are fixedly installed at the right end of the water diversion pipe and are respectively fixedly connected to the front and rear annular pipes. Pneumatic valves are fixedly installed on both diversion pipes, and two symmetrical sewage pipes are fixedly installed at the bottom of the switching pipe.

[0018] Furthermore, a limiting sleeve is fixedly installed at the bottom of the slide rail, and a limiting rod slidably connected to the limiting sleeve is fixedly installed at the bottom of the Z-shaped rod.

[0019] The beneficial effects of the present invention are:

[0020] 1. By utilizing the water pressure change in the main pipe caused by the blockage of the front filter cartridge due to continuous water filtering, the movement and switching of the filter cartridge is automatically triggered. Without manual intervention, it can automatically adjust according to the blockage situation of the filter cartridge to ensure the continuity of water supply in the city water supply pipeline. At the same time, when the filter cartridge is moving, the water spray pipe automatically enters the filter cartridge as it moves. By connecting the water diversion pipe, the water in the main pipe will enter the front diversion pipe through the water diversion pipe and be sprayed out through the water spray pipe when flowing to the branch pipe, so as to backwash the filter cartridge, thereby removing scale impurities on the filter cartridge and making the filter holes unblocked. In addition, the cleaning process is carried out while the water is being supplied by the city water supply pipeline, which will not affect the water supply, and there will be no situation where the rear filter cartridge is blocked and the front filter holes are not cleaned, thereby further ensuring the stability and continuity of the water supply.

[0021] 2. Scale accumulates due to continuous water filtration through the rear filter cartridge, and the water pressure in the branch pipe gradually increases, gradually pushing the sealing plate three downward, driving the sealing plate four downward to the bottom of the drain pipe, and discharging the water between the part of the main pipe located on the left side of the barrier cylinder and the pipeline self-switching unit, releasing the water pressure. During the process of water pressure release, the front filter cartridge moves backward to the connection between the switching pipe and the main pipe, and the barrier cylinder also moves accordingly, blocking the water outflow of the branch pipe, and the pipeline self-switching unit controls the branch pipe to be closed, the left side of the barrier cylinder in the main pipe is restored to be unobstructed, and the main pipe starts to supply water again, realizing the switch from the branch pipe to the main pipe.

[0022] 3. By utilizing water pressure to achieve mechanical linkage, each link is closely connected, from automatic switching of filter cartridges, backwashing to closing and opening of pipelines. It can be completed automatically without complex external control, which greatly improves the working stability of the device. In addition, when encountering power outages, the filter cartridge can still be automatically switched, backwashed and the pipeline can be switched as the filter cartridge gradually becomes blocked, thereby greatly improving the stability and continuity of water supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0024] Figure 2 It is a partial three-dimensional structural diagram of the water outlet pipe, pipeline self-switching unit and filter cartridge self-cleaning unit of the present invention.

[0025] Figure 3 It is a partial three-dimensional structural sectional view of the water outlet pipe, the fixing cylinder and the installation cylinder of the present invention.

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the pneumatic valve, water spray pipe, annular pipe, diversion pipe and water diversion pipe of the present invention.

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the fixed cylinder, return spring 1, sealing plate and moving rod of the present invention.

[0028] Figure 6 It is a partial three-dimensional structural diagram of the shifting rod, wedge block 1, wedge block 2, blocking plate 1, blocking plate 2 and wedge-shaped telescopic block of the present invention.

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the fixed plate, spring telescopic rod, Z-shaped rod, teeth and driven gear of the present invention.

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the cylinder, sealing plate three, sealing plate four, connecting rod and return spring of the present invention.

[0031] Figure 9It is a partial three-dimensional structural cross-sectional view of the main pipe, branch pipe, switching pipe, connecting pipe, fixed cylinder and filter cylinder of the present invention.

[0032] In the figure: 1. Base; 2. Water storage tank; 3. Water pump; 4. Water pump pipe; 5. Water outlet pipe; 501. Main pipe; 502. Branch pipe; 503. Switching pipe; 504. Connecting pipe; 6. Pipeline self-switching unit; 7. Filter cartridge self-cleaning unit; 601. Switching assembly; 602. Control assembly; 603. Trigger assembly; 604. Wedge-shaped telescopic block; 605. Limiting sleeve; 606. Limiting rod; 6011. Rotating shaft 1; 6012. Blocking plate 1; 6013. Rotating shaft 2; 6014. Blocking plate 2; 6015. Ratchet one-way bearing; 6016. Tooth; 6017. Driven gear; 6018. Driving bevel gear; 6019. Driven bevel gear; 6021. Fixed cylinder; 6022. Return spring 1; 6023. Sealing plate 1; 6024. Moving rod; 6 031, slide rail; 6032, slider; 6033, fixed plate; 6034, spring telescopic rod; 6035, return spring 2; 6036, wedge block 1; 6037, wedge block 2; 6038, lever; 6039, Z-shaped rod; 701, filter cartridge moving assembly; 702, filter cartridge backflush assembly; 703, cylinder; 704, return spring 4; 705, sealing plate 3; 70 6. Sealing plate four; 707. Connecting rod; 7011. Filter cartridge; 7012. Barrier cartridge; 7013. Mounting cartridge; 7014. Return spring three; 7015. Sealing plate two; 7016. U-shaped rod; 7017. Circular plate; 7021. Spray pipe; 7022. Annular pipe; 7023. Water diversion pipe; 7024. Diversion pipe; 7025. Pneumatic valve; 7026. Drain pipe. DETAILED DESCRIPTION

[0033] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that these embodiments are discussed to enable those skilled in the art to better understand and implement the subject matter described herein. The functions and arrangements of the elements discussed may be varied without departing from the scope of protection of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0034] See Figure 1 、 Figure 2 and Figure 9In this embodiment, a pipeline water inlet filtering device is proposed, including a base 1, a water storage tank 2 fixedly installed on the top of the base 1 and several water pumps 3, a water suction pipe 4 is fixedly connected between the several water pumps 3 and the water storage tank 2, and a water outlet pipe 5 is fixedly connected between the several water pumps 3, which is composed of a main pipe 501, a branch pipe 502 fixedly installed on the rear side of the main pipe 501, a switching pipe 503 fixedly installed on the outside of the main pipe 501 and a connecting pipe 504 fixedly installed on the rear side of the main pipe 501 for connecting the switching pipe 503 and the main pipe 501. The outlet pipe 5 is provided with a pipeline self-switching unit 6 and a filter cartridge self-cleaning unit 7. The pipeline self-switching unit 6 includes a switching component 601, a trigger component 603 for triggering the switching component 601 and a control component 602 for controlling the movement of the trigger component 603. The filter cartridge self-cleaning unit 7 includes a filter cartridge moving component 701 and a filter cartridge backflushing component 702.

[0035] See Figure 2 、 Figure 3 and Figure 4 The filter cartridge moving assembly 701 includes two filter cartridges 7011 slidably connected to the switching tube 503 and a barrier tube 7012 fixedly installed between the two filter cartridges 7011. A mounting tube 7013 is fixedly installed on the front side of the main tube 501. A sealing plate 2 7015 is fixedly installed on the inner wall of the mounting tube 7013 on the side close to the main tube 501 through a return spring 3 7014. Circular plates 7017 are fixedly installed on the opposite sides of the two filter cartridges 7011. A U-shaped rod 7016 is commonly installed between the sealing plate 2 7015 and the front circular plate 7017. The left and right vertical sections of the U-shaped rod 7016 slide through the mounting tube 7013 and the switching tube 503 respectively.

[0036] See Figure 2 、 Figure 3 、 Figure 4 and Figure 8The filter cartridge backflush assembly 702 includes a plurality of water spray pipes 7021 fixedly mounted on the switching pipe 503 and symmetrically arranged front and back. An annular pipe 7022 is commonly installed between the plurality of water spray pipes 7021 on the same side. A water diversion pipe 7023 is fixedly mounted on the top of the main pipe 501. Two diversion pipes 7024 are fixedly mounted on the right end of the diversion pipe 7023 and are respectively connected to the two annular pipes 7022 in front and back. A pneumatic valve 7025 is fixedly mounted on both diversion pipes 7024. Two sewage discharge pipes are fixedly mounted on the bottom of the switching pipe 503 and are symmetrically arranged front and back. 7026, a plurality of through grooves corresponding to the water spray pipes 7021 are provided on the circular plate 7017, and a cylinder 703 is fixedly installed at the bottom of the branch pipe 502 and the main pipe 501, and a sealing plate 3 705 is fixedly installed in the rear cylinder 703 through a return spring 4 704 and is slidably connected to the inner wall of the cylinder 703, and a sealing plate 4 706 is slidably connected in the front cylinder 703, and a connecting rod 707 that slides through the two cylinders 703 is installed between the sealing plates 3 705 and 4 706, and a drain pipe is provided on the front side of the front cylinder 703.

[0037] During specific use, initially, the main pipe 501 is unobstructed, the branch pipe 502 is closed, the front filter cartridge 7011 is located at the connection between the main pipe 501 and the switching pipe 503, and the barrier cylinder 7012 is located at the connection between the branch pipe 502 and the switching pipe 503. The water pump 3 draws water out of the water storage tank 2 through the pumping pipe 4 and transmits the water to the right through the outlet pipe 5. When the water passes through the filter cartridge 7011, it will be filtered by the filter cartridge 7011, thereby effectively blocking and removing impurities in the water. As the filter cartridge 7011 accumulates scale due to continuous water filtering, the water outlet speed gradually slows down, and the water pressure on the outlet pipe 5 on the left side of the filter cartridge 7011 gradually increases, thereby gradually pushing the sealing plate 2 7015 forward, causing the U-shaped rod 7016 to move forward, driving the circular plate 701 7 Pull the front filter cartridge 7011 to move the barrier cartridge 7012 forward to block the main pipe 501 on its left side to continue to discharge water. At the same time, the rear filter cartridge 7011 moves to the connection between the switching pipe 503 and the branch pipe 502, and the pipeline self-switching unit 6 controls the branch pipe 502 to be converted into an unobstructed state. The main pipe 501 on the left side of the barrier cartridge 7012 is closed, thereby realizing the switch from the main pipe 501 to the branch pipe 502 and continuing to maintain water supply. By utilizing the water pressure change caused by the blockage of the main pipe 501 due to continuous filtering of water by the filter cartridge 7011, the movement and switching of the filter cartridge 7011 is automatically triggered, thereby realizing the automatic switching of the filter cartridge 7011. It can automatically adjust according to the blockage condition of the filter cartridge 7011 without manual intervention to ensure the continuity of water supply.

[0038] During the forward movement of the front filter cartridge 7011, the front water spray pipes 7021 gradually pass through the corresponding slots and enter the interior of the filter cartridge 7011. When the barrier cylinder 7012 moves forward to block the main pipe 501 on its left side from continuing to discharge water, at the same time, after the rear filter cartridge 7011 moves to the connection between the switching pipe 503 and the branch pipe 502, the front pneumatic valve 7025 is opened. When the water in the main pipe 501 flows to the branch pipe 502, it also enters the front diversion pipe 7024 through the water diversion pipe 7023, and then passes through the front diversion pipe 7024 and the annular pipe 7022 to enter the front water spray pipes 7021, and is sprayed out through the water spray pipes 7021 to backwash the filter cartridge 7011. Sewage is continuously discharged through the front sewage pipe 7026; during the movement of the filter cartridge 7011, the water spray pipe 7021 can automatically enter the filter cartridge 7011 and connect the water diversion pipe 7023 at the same time, so that the water in the main pipe 501 will enter the front diversion pipe 7024 through the water diversion pipe 7023 and be sprayed out through the water spray pipe 7021 when flowing to the branch pipe 502, so as to backwash the filter cartridge 7011, thereby removing scale impurities on the filter cartridge 7011 and making the filter holes unobstructed, and the cleaning process is carried out while the water supply is being supplied, which will not affect the water supply, and there will be no situation where the rear filter cartridge 7011 is blocked and the front filter holes are not cleaned, thereby further ensuring the stability and continuity of the water supply.

[0039] When scale accumulates in the rear filter cartridge 7011 due to continuous water filtration, the water outlet speed gradually slows down, and the water pressure in the branch pipe 502 gradually increases, the water pressure will gradually push the sealing plate three 705 to move downward, thereby compressing the reset spring four 704 and driving the sealing plate four 706 to move downward to the bottom of the drain pipe through the connecting rod 707. At this time, the water between the left side of the barrier cylinder 7012 in the main pipe 501 and the pipeline self-switching unit 6 will be discharged through the drain pipe. The discharged water can be filtered and recycled by the external filtering equipment and can be used again, so that the water pressure between the part of the main pipe 501 located on the left side of the barrier cylinder 7012 and the pipeline self-switching unit 6 is released, and the sealing plate two 7015 is reset under the push of the reset spring three 7014, thereby driving the front filter cartridge. 7011 moves backward to the connection between the switching tube 503 and the main tube 501, so that the barrier tube 7012 moves backward to block the water outflow from the branch tube 502. At the same time, the pipeline self-switching unit 6 controls the branch tube 502 to be converted into a closed state, and the part of the main tube 501 located on the left side of the barrier tube 7012 is unobstructed, and the main tube 501 starts to supply water; in the process of water pressure release, the front filter cartridge 7011 moves backward to the connection between the switching tube 503 and the main tube 501, and at the same time, the barrier tube 7012 also moves accordingly, blocking the water outflow from the branch tube 502, and the pipeline self-switching unit 6 controls the branch tube 502 to be closed, and the part of the main tube 501 located on the left side of the barrier tube 7012 is restored to be unobstructed, and the main tube 501 starts to supply water again, realizing the switching from the branch tube 502 to the main tube 501.

[0040] When the front filter cartridge 7011 moves backward to the connection between the switching pipe 503 and the main pipe 501, causing the barrier cylinder 7012 to move backward to block the water outlet of the branch pipe 502, the rear filter cartridge 7011 gradually moves to the rear end of the switching pipe 503, and the rear several water spray pipes 7021 gradually pass through the corresponding through grooves and enter the interior of the filter cartridge 7011. When the rear filter cartridge 7011 stops moving, the rear pneumatic valve 7025 is opened, and the water in the main pipe 501 flows to the branch pipe 502 through the water diversion pipe 7023 and into the rear diversion pipe 7024, and then passes through the rear diversion pipe 7024 and the annular pipe 7022 into the front several water spray pipes 7021, and is sprayed out through the several water spray pipes 7021 to backwash the rear filter cartridge 7011. The sewage generated by the flushing is continuously discharged through the rear sewage pipe 7026.

[0041] See Figure 2 、 Figure 5 、 Figure 6 and Figure 7 The control assembly 602 includes a fixed cylinder 6021 fixedly installed on the front side of the main pipe 501 and connected to the main pipe 501, with an opening on the right side, and a return spring 1 6022 fixedly installed on the inner wall of the left side of the fixed cylinder 6021. The return spring 1 6022 is fixedly installed with a sealing plate 1 6023 slidingly connected to the inner wall of the fixed cylinder 6021 near the right end, and a moving rod 6024 is fixedly installed on the right side of the sealing plate 1 6023. The elastic coefficient of the return spring 1 6022 is greater than that of the return spring 3 7014.

[0042] See Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 and Figure 7 The trigger assembly 603 includes a slide rail 6031 fixedly installed on the front side of the main pipe 501 and a spring telescopic rod 6034 fixedly installed on the top of the slide rail 6031 through a fixed plate 6033. The telescopic section of the spring telescopic rod 6034 is fixedly installed with a slider 6032 that is slidably connected to the slide rail 6031 and has a mounting groove therein. A wedge block 1 6036 that is slidably connected to the mounting groove is fixedly installed in the mounting groove via a return spring 2 6035.

[0043] See Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 9The right end of the moving rod 6024 is fixedly installed with a shift rod 6038 through a block, which cooperates with the wedge block 1 6036. The top of the sliding rail 6031 is fixedly installed with a wedge block 2 6037 which cooperates with the wedge block 1 6036. The right side of the slider 6032 is fixedly installed with a Z-shaped rod 6039. The bottom of the sliding rail 6031 is fixedly installed with a limit sleeve 605. The bottom of the Z-shaped rod 6039 is fixedly installed with a limit rod 606 which is slidably connected to the limit sleeve 605.

[0044] See Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 and Figure 7 The switching assembly 601 includes a rotating shaft 1 6011 rotatably mounted on the inner wall of the branch pipe 502 and a baffle 1 6012 fixedly sleeved on the outside of the rotating shaft 1 6011. A rotating shaft 2 6013 is rotatably mounted on the inner wall of the main pipe 501 and is perpendicular to the rotating shaft 1 6011. A baffle 2 6014 is fixedly sleeved on the outside of the rotating shaft 2 6013. The front end of the rotating shaft 2 6013 passes through the main pipe 501 and is fixedly mounted with a ratchet one-way bearing 6015 fixedly connected to the main pipe 501.

[0045] See Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 and Figure 7 The switching assembly 601 also includes a tooth 6016 fixedly mounted on the top of the Z-shaped rod 6039 and a driven gear 6017 fixedly mounted on the front side of the ratchet one-way bearing 6015 and meshing with the tooth 6016. The rotating shaft 1 6011 and the rotating shaft 2 6013 pass through the branch pipe 502 and the main pipe 501 near one end respectively and mesh with the driving bevel gear 6018 through the driven bevel gear 6019.

[0046] See Figure 3 、 Figure 5 、 Figure 6 and Figure 7 Two wedge-shaped telescopic blocks 604 for limiting the second blocking plate 6014 are fixedly installed on the inner wall of the main pipe 501. The wedge-shaped telescopic blocks 604 are elastic and retractable structures. The two wedge-shaped telescopic blocks 604 limit the second blocking plate 6014 when the main pipe 501 is unobstructed and when the main pipe 501 is closed.

[0047] In specific use, as the water pressure in the main pipe 501 gradually increases, while pushing the sealing plate 2 7015, since the elastic coefficient of the return spring 1 6022 is greater than the return spring 3 7014, after the sealing plate 2 7015 is pushed for a period of time, as the water pressure continues to increase, the water pressure gradually starts to push the sealing plate 1 6023 to move to the left. When the circular plate 7017 pulls the front filter cartridge 7011, the barrier cartridge 7012 moves forward to block the main pipe 501 on its left side from continuing to discharge water, and at the same time, the rear filter When the cylinder 7011 moves to the connection between the switching tube 503 and the branch tube 502, the sealing plate 1 6023 drives the shifting rod 6038 through the moving rod 6024 to pull the wedge block 1 6036 to the left to squeeze the wedge block 2 6037. During the squeezing process, the wedge block 1 6036 retracts into the installation groove and passes over the wedge block 2 6037. During this process, the Z-shaped rod 6039 moves to the left, and the teeth 6016 engage with the driven gear 6017. However, due to the action of the ratchet one-way bearing 6015, the rotating shaft 2 601 is not driven. 3 rotation, when the lever 6038 passes over the wedge-shaped block 6037, the spring telescopic rod 6034 drives the slider 6032 to move rightward and reset, thereby driving the Z-shaped rod 6039 to move rightward, so that the teeth 6016 engage with the driven gear 6017. This engagement drives the rotating shaft 6013 to rotate 90 degrees under the action of the ratchet one-way bearing 6015, thereby driving the blocking plate 6014 to rotate 90 degrees. During the rotation process, the blocking plate 6014 squeezes and passes over the wedge of the corresponding wedge-shaped telescopic block 604. shaped surface, the wedge-shaped telescopic block 604 is used to limit the baffle plate 2 6014 to prevent the impact of water flow from causing the baffle plate 2 6014 to rotate in the direction where the ratchet one-way bearing 6015 is not locked, thereby closing the main pipe 501. At the same time, the rotation of the rotating shaft 2 6013 will also drive the driving bevel gear 6018 to engage with the driven bevel gear 6019, driving the rotating shaft 1 6011 to rotate 90°, causing the baffle plate 1 6012 to rotate 90°, thereby making the branch pipe 502 unobstructed, thereby realizing pipeline switching.

[0048] When scale accumulates on the rear filter cartridge 7011 due to continuous water filtering, the water outlet speed gradually slows down, and the water pressure in the branch pipe 502 gradually increases, gradually pushing the sealing plate 3 705 downward, so that the water between the part of the main pipe 501 located on the left side of the barrier cylinder 7012 and the pipeline self-switching unit 6 is discharged through the drain pipe, thereby causing the front filter cartridge 7011 to move backward to the connection between the switching pipe 503 and the main pipe 501, so that the barrier cylinder 7012 moves backward to block the water outlet of the branch pipe 502, and the water pressure will gradually push the sealing plate 1 6023 to move left. When the front filter cartridge 7011 moves backward to the connection between the switching pipe 503 and the main pipe 501, so that the barrier cylinder 7012 moves backward to block the water outlet of the branch pipe 502, the sealing plate 1 6023 moves through the moving rod 6 024 drives the shift rod 6038 to pull the wedge block 1 6036 to move left and squeeze. After the shift rod 6038 passes the wedge block 2 6037, the spring telescopic rod 6034 drives the slider 6032 to move right and reset, thereby driving the Z-shaped rod 6039 to move right, causing the teeth 6016 to engage with the driven gear 6017, driving the rotating shaft 2 6013 to rotate 90°, thereby driving the blocking plate 2 6014 to rotate 90°, and then opening the main pipe 501. At the same time, the rotating shaft 2 6013 rotates and drives the driving bevel gear 6018 to engage with the driven bevel gear 6019, driving the rotating shaft 1 6011 to rotate 90°, causing the blocking plate 1 6012 to rotate 90°, thereby closing the branch pipe 502 and realizing pipeline switching again.

[0049] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to provide an exhaustive list of all embodiments. However, obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A pipe water inlet filtering device, comprising a base, a water storage tank fixedly mounted on the top of the base, and a plurality of water pumps, wherein a water pumping pipe is fixedly connected between the plurality of water pumps and the water storage tank, characterized in that: A water outlet pipe is fixedly connected between the water pumps and is composed of a main pipe, a branch pipe fixedly installed on the rear side of the main pipe, a switching pipe fixedly installed on the outside of the main pipe, and a connecting pipe fixedly installed on the rear side of the main pipe. The water outlet pipe is provided with a pipeline self-switching unit and a filter cartridge self-cleaning unit. The pipeline self-switching unit includes a switching component, a trigger component for triggering the switching component, and a control component for controlling the movement of the trigger component. The filter cartridge self-cleaning unit includes a filter cartridge moving component and a filter cartridge backflushing component. The filter cartridge moving assembly includes two filter cartridges slidably connected in the switching tube and a barrier tube fixedly installed between the two filter cartridges. A mounting tube is fixedly installed on the front side of the main tube. A sealing plate 2 is fixedly installed on the inner wall of the mounting tube close to the main tube via a return spring 3. A circular plate is fixedly installed on the opposite sides of the two filter cartridges. A U-shaped rod is installed between the sealing plate 2 and the front circular plate. The left and right vertical sections of the U-shaped rod slide through the mounting tube and the switching tube respectively. The filter cartridge accumulates scale due to continuous water filtering, the water outlet speed gradually slows down, and the water pressure in the outlet pipe gradually increases, which gradually pushes the second sealing plate forward, causing the U-shaped rod to move forward, driving the circular plate to pull the front filter cartridge, causing the barrier cylinder to move forward to block the main pipe on its left to continue to discharge water. At the same time, the rear filter cartridge moves to the connection between the switching pipe and the branch pipe, and then the filter cartridge backwash assembly backwashes the front filter cartridge.

2. A pipe water inlet filtering device according to claim 1, characterized in that: The switching assembly includes a rotating shaft 1 rotatably mounted on the inner wall of the branch pipe and a baffle plate 1 fixedly sleeved on the outside of the rotating shaft 1; a rotating shaft 2 perpendicular to the rotating shaft 1 is rotatably mounted on the inner wall of the main pipe; a baffle plate 2 is fixedly sleeved on the outside of the rotating shaft 2; the front end of the rotating shaft 2 passes through the main pipe and is fixedly mounted with a ratchet one-way bearing fixedly connected to the main pipe.

3. A pipe water inlet filtering device according to claim 2, characterized in that: The control assembly includes a fixed cylinder fixedly installed on the front side of the main pipe and connected to the main pipe, with an opening on the right side, and a return spring 1 fixedly installed on the left inner wall of the fixed cylinder. A sealing plate 1 is fixedly installed near the right end of the return spring 1 and is slidably connected to the inner wall of the fixed cylinder. A moving rod is fixedly installed on the right side of the sealing plate 1.

4. A pipe water inlet filtering device according to claim 3, characterized in that: The trigger assembly includes a slide rail fixedly installed on the front side of the main pipe and a spring telescopic rod fixedly installed on the top of the slide rail through a fixed plate. The telescopic section of the spring telescopic rod is fixedly installed with a slider that is slidably connected to the slide rail and has an installation groove inside. A wedge block 1 that is slidably connected to the installation groove is fixedly installed in the installation groove through a reset spring 2.

5. A pipeline water inlet filtering device according to claim 4, characterized in that: The right end of the moving rod is fixedly installed with a shift rod matched with wedge block 1 through a block, the top of the slide rail is fixedly installed with a wedge block 2 matched with wedge block 1, and the right side of the slider is fixedly installed with a Z-shaped rod.

6. A pipeline water inlet filtering device according to claim 5, characterized in that: The switching assembly also includes teeth fixedly mounted on the top of the Z-shaped rod and a driven gear fixedly mounted on the front side of the ratchet one-way bearing and meshing with the teeth. The rotating shaft 1 and the rotating shaft 2 are close to one end and pass through the branch pipe and the main pipe respectively and mesh with the driven bevel gear and the driving bevel gear.

7. A pipeline water inlet filtering device according to claim 2, characterized in that: Two wedge-shaped telescopic blocks for limiting the baffle plate 2 are fixedly installed on the inner wall of the main pipe. The two wedge-shaped telescopic blocks limit the baffle plate 2 when the main pipe is unobstructed and when the main pipe is closed respectively. Cylinders are fixedly installed on the bottom of the branch pipe and the main pipe. A sealing plate 3 is fixedly installed in the rear cylinder through a return spring 4, which is slidably connected to the inner wall of the cylinder. A sealing plate 4 is slidably connected in the front cylinder. A connecting rod that slides through the two cylinders is jointly installed between the sealing plates 3 and 4.

8. The pipeline water inlet filtering device according to claim 1, characterized in that: The filter cartridge backflush assembly includes a plurality of water spray pipes fixedly mounted on the switching pipe and symmetrically arranged front to back. An annular pipe is commonly installed between the plurality of water spray pipes on the same side, and a water diversion pipe is fixedly mounted on the top of the main pipe.

9. A pipeline water inlet filtering device according to claim 8, characterized in that: Two diversion pipes are fixedly installed at the right end of the water diversion pipe and are respectively fixedly connected to the front and rear annular pipes. Pneumatic valves are fixedly installed on both diversion pipes. Two symmetrical sewage pipes are fixedly installed at the bottom of the switching pipe.

10. A pipeline water inlet filtering device according to claim 5, characterized in that: A limiting sleeve is fixedly installed at the bottom of the slide rail, and a limiting rod slidably connected to the limiting sleeve is fixedly installed at the bottom of the Z-shaped rod.

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