Pre-interception filtering device for water inlet passage of pump station

Abstract

The invention relates to the technical field of water treatment equipment, and particularly discloses a pump station water inlet runner pre-interception filtering device which comprises a main pipeline, and the bottom of the main pipeline is fixedly connected with the input end of a pump station. Different impurities are intercepted in a graded mode by arranging three-stage filtering, compared with a current common fine screen filtering mode, the flowing effect of water flow is improved, meanwhile, the blocking time of a filtering system can be effectively prolonged by conducting graded interception on the impurities, and therefore the working time of the device is greatly prolonged, and the working efficiency is improved. The problem that the working efficiency of the pump station is low due to frequent shutdown maintenance is avoided, meanwhile, due to the fact that the first-stage filtering cover, the second-stage filtering cover and the third-stage filtering cover are arranged in a conical mode, intercepted impurities can be accumulated on the edges of the first-stage filtering cover, the second-stage filtering cover and the third-stage filtering cover, the flowing capacity of water flow is further improved, the blocking probability is reduced, and the service life of the pump station is prolonged. And the risk of blockage acceleration due to the fact that impurities are extruded on a planar filtering system by water pressure and cannot move is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment equipment, and specifically relates to a pre-interception and filtration device for the intake channel of a pumping station. Background Art

[0002] In the water treatment system of a pumping station, the pre-interception and filtration device for the intake channel is a key component to ensure the stable operation of the equipment. Its main function is to intercept sundries (such as branches, stones, garbage, etc.) in the water through a multi-stage filtration structure before the water enters the pumping station, preventing these sundries from blocking the pump body or affecting the subsequent treatment process. The device combines mechanical filtration and hydrodynamic design to achieve the preliminary purification of the water source, and is widely used in fields such as municipal water supply and sewage treatment, which plays an important role in improving the efficiency of the pumping station and extending the service life of the equipment.

[0003] Traditional pre-interception and filtration devices for the intake channel of pumping stations have significant deficiencies. In terms of filtration efficiency, although the single-level fine sieve filtration method can intercept some sundries, it is easy to increase the water flow resistance due to the accumulation of sundries, and it is necessary to stop the machine frequently for cleaning, seriously affecting the operation efficiency of the pumping station. The filtration structure design is unreasonable. The flat filtration cover is easy to make the sundries closely adhere to the filter screen under the action of water pressure, accelerating the clogging process, and it is difficult to meet the requirements of grading and intercepting sundries with different particle sizes. In addition, the traditional device lacks an effective automatic cleaning mechanism and relies on manual maintenance, which not only increases the operation cost, but also may cause filtration failure due to untimely cleaning, threatening the safety of the pumping station. The absence of a conical structure makes it impossible for sundries to naturally converge to the edge, further exacerbating the clogging risk. These problems restrict the long-term stable operation of traditional filtration devices, and there is an urgent need to improve the performance through innovative designs such as grading filtration and self-cleaning. Summary of the Invention

[0004] The present invention provides a pre-interception and filtration device for the intake channel of a pumping station, which solves the problems mentioned in the above background art.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A pre-interception and filtration device for the intake channel of a pumping station, including a main pipeline, the bottom of the main pipeline is fixedly connected to the input end of the pumping station, and further includes: a filtration mechanism fixedly installed inside the main pipeline; an auxiliary mechanism fixedly installed on the outer surface of the main pipeline; wherein the filtration mechanism includes a primary filtration cover fixedly connected to the inner surface of the top of the main pipeline, a secondary filtration cover is arranged below the primary filtration cover, and a tertiary filtration cover is arranged below the secondary filtration cover, and the primary filtration cover, the secondary filtration cover and the tertiary filtration cover are arranged on the same central axis.

[0006] According to an embodiment of the present invention, the filtering mechanism further includes a filtering groove, which is respectively formed through the upper surfaces of the primary filtering cover, the secondary filtering cover and the tertiary filtering cover. The primary filtering cover, the secondary filtering cover and the tertiary filtering cover are arranged in a conical shape, and the filtering grooves on the primary filtering cover, the secondary filtering cover and the tertiary filtering cover are arranged to gradually decrease.

[0007] According to an embodiment of the present invention, an installation ring is arranged below the tertiary filtering cover. The installation ring is fixedly connected to the inner surface of the bottom of the main pipe. Two installation rings are arranged parallel to each other along the inner surface of the main pipe. A rotating rod is rotatably connected through the middle of the installation ring.

[0008] According to an embodiment of the present invention, the top of the rotating rod penetrates through the primary filtering cover, the secondary filtering cover and the tertiary filtering cover. A turbine is fixedly connected to the outer surface of the bottom of the rotating rod.

[0009] According to an embodiment of the present invention, a driving component is arranged on the outer surface of the top of the rotating rod. Two driving components are arranged along the outer surface of the rotating rod. The two driving components are respectively arranged below the primary filtering cover and the secondary filtering cover. The driving component includes a bottom ring, which is fixedly sleeved on the outer surface of the rotating rod. A top ring is fitted on the upper surface of the bottom ring. The top ring and the bottom ring are mutually clamped. The top ring is slidably sleeved on the outer surface of the rotating rod up and down. The top of the top ring is elastically slidably connected to the middle bottom surfaces of the primary filtering cover and the secondary filtering cover through connecting rods respectively.

[0010] According to an embodiment of the present invention, a bearing rod is fixedly connected to the outer surface of the upper top ring. The bearing rod is arranged obliquely. A convex plate is fixedly connected to the upper surface of the bearing rod. The upper surface of the convex plate is arranged obliquely and the inclination angle gradually increases. The convex plate is arranged directly below the filtering groove on the primary filtering cover.

[0011] According to an embodiment of the present invention, an installation cover is fixedly connected to the outer surface of the lower top ring. A cleaning bag is fixedly connected to the upper surface of the installation cover. The cleaning bag covers the upper surface of the installation cover. A cleaning hole is formed through the upper surface of the cleaning bag. The cleaning hole is directly opposite to the filtering groove on the secondary filtering cover. A cleaning rod is fixedly connected to the outer surface of the lower bottom ring. The cleaning rod is fitted on the upper surface of the tertiary filtering cover. The cleaning rod is arranged obliquely.

[0012] According to an embodiment of the present invention, the auxiliary mechanism includes an outer cover, the outer cover is annular, the outer cover is fixedly sleeved on the outer surface of the main pipeline, a communication notch is penetrated and opened on the outer surface of the main pipeline, a group of the communication notches are arranged in the same plane, there are three groups of the communication notches, the sizes of the three groups of the communication notches are gradually reduced from top to bottom, the communication notches are respectively arranged on the outer sides of the primary filter cover, the secondary filter cover and the tertiary filter cover, and a retaining ring is arranged on the outer side of the communication notch, and the retaining ring is fixedly sleeved on the outer surface of the main pipeline.

[0013] According to an embodiment of the present invention, a cleaning ring is slidably arranged on the inner surface of the bottom of the outer cover, the inner surface of the cleaning ring is slidably connected to the outer surface of the main pipeline, the upper surface of the cleaning ring is inclined, a bearing ring is fixedly sleeved on the outer surface of the bottom of the main pipeline, an elastic telescopic rod is fixedly connected through the upper surface of the bearing ring, the top of the elastic telescopic rod is fixedly connected to the bottom surface of the cleaning ring, wherein six elastic telescopic rods are fixedly arranged at equal intervals around the central axis of the bearing ring, and the output ends of the six elastic telescopic rods are fixedly connected to each other. A bottom pipe is slidably sleeved through the upper surface of the cleaning ring, the bottom of the bottom pipe is fixedly communicated through the outer surface of the bottom of the main pipeline, a filter plate is fixedly connected to the top of the bottom pipe. When it is necessary to filter the water inlet of the pumping station, the bottom of the device can be installed at the water inlet end of the pumping station. At this time, the water will enter the main pipeline before entering the pumping station. When the water flow carrying sundries enters the main pipeline, it will pass through the primary filter cover, the secondary filter cover and the tertiary filter cover and then enter the pumping station through the bottom of the main pipeline after filtration. The filter slots of the primary filter cover are larger, which can block garbage such as branches and bottles doped in the water. After the large sundries are blocked, the water flow carrying neutral sundries such as stones and small sundries enters the secondary filter cover along the filter slots of the primary filter cover and is filtered through the filter slots on the secondary filter slots. Then, the water flow carrying small sundries such as gravel enters the tertiary filter cover and is blocked. Finally, the pre-filtered water flow is output from the bottom of the main pipeline through the tertiary filter cover.

[0014] The present invention provides a pre-interception and filtration device for the water inlet flow channel of a pumping station. It has the following beneficial effects: (1). The pre-interception and filtration device for the inlet water passage of this pumping station can achieve hierarchical interception of different sundries through the setting of three-stage filtration. Compared with the currently commonly used method of filtering with a fine sieve mesh, it not only improves the flow effect of the water flow, but also the hierarchical interception of sundries can effectively extend the time when the filtration system is blocked, thereby greatly prolonging the working time of this device and avoiding the problem of low working efficiency of the pumping station caused by frequent shutdown maintenance. At the same time, since the primary filter cover, secondary filter cover and tertiary filter cover are arranged in a conical shape, the intercepted sundries will accumulate on the edges of the primary filter cover, secondary filter cover and tertiary filter cover, thereby further improving the flow capacity of the water flow, reducing the probability of blockage, and avoiding the risk that the flat filtration system causes the water pressure to squeeze the sundries on the filtration system and cannot move, accelerating the blockage.

[0015] (2) The pre - interception and filtration device of the inlet flow channel of this pumping station. After the water flow passes through the three - stage filter cover, it will impact the turbine, causing the turbine to start rotating with the water flow, that is, driving the rotating rod to start rotating. As the rotating rod rotates, the bottom ring starts to make a relative rotational movement with the top ring. During the rotation of the bottom ring, due to the mutual clamping effect, the bottom ring starts to push the top part upwards, and then drives the convex plate to move upwards through the connecting bearing rod. At this time, the convex plate gradually approaches the filter slot of the first - stage filter plate and finally passes through the filter slot and protrudes from the filter slot, thus lifting the sundries such as branches pressed on the first - stage filter plate by water pressure, helping to gather the sundries to the edge of the first - stage filter plate, thereby realizing continuous cleaning of the first - stage filter plate during the filtration process, greatly reducing the problem of blockage of the first - stage filter plate. And because the upper surface of the convex plate is inclined, when the convex plate protrudes from the filter slot, its inner end protrudes from the filter slot first and gradually protrudes from the inside to the outside, so as to realize cleaning from the inside to the outside when cleaning the first - stage filter plate, cooperating with the water flow to further improve the cleaning effect, helping to gather the sundries at the edge of the first - stage filter plate, and improving the water - passing effect of the first - stage filter plate. The sundries such as stones gather on the upper surface of the second - stage filter plate after passing through the first - stage filter plate. At this time, as the top ring moves upwards, it will drive the installation cover to move upwards at the same time, and then drive the cleaning bladder to move upwards. And the cleaning bladder is an elastic bladder. When the upper surface of the cleaning bladder contacts the bottom surface of the second - stage filter plate and is gradually squeezed, the inside of it is in a negative pressure state, and then the water inside it is released through the filter slot on the second - stage filter plate through the cleaning hole, thereby cooperating with the original flow direction of the water flow to generate an inclined outward driving force on the sundries such as stones gathered on the second - stage filter plate, so as to help gather the sundries such as stones at the edge of the second - stage filter plate. When the bottom ring rotates, it will drive the cleaning rod to rotate at the same time, thus preventing sundries such as broken stones from accumulating above the third - stage filter plate. At the same time, the cleaning rod is inclined, so that when the cleaning rod rotates, it will generate an outward driving force, thereby helping to gather the sundries such as broken stones at the edge of the third - stage filter plate. Through the three - stage filtration linkage, not only is the interception and gathering of sundries greatly improved, the flow effect of the water flow is improved, but also the working time of this device is greatly extended, and the probability of the device being blocked and shut down is greatly reduced. When the sundries are accumulated at the edges of the first - stage filter cover, the second - stage filter cover and the third - stage filter cover, they will enter the inside of the outer cover through the connecting notch on the main pipeline and be squeezed at the bottom of the outer cover, that is, above the cleaning ring, by water pressure. At this time, the water flow carried by the sundries passes through the filter of the filter plate and then re - enters the main pipeline through the bottom pipe, that is, the sundries on the first - stage filter cover, the second - stage filter cover and the third - stage filter cover are cleaned in real time, preventing the sundries from staying on the upper surfaces of the first - stage filter cover, the second - stage filter cover and the third - stage filter cover, thereby further improving the working effect of this device.

[0016] (3). The pre-interception and filtration device for the inlet flow channel of this pumping station. When the debris inside the outer cover gradually increases, the newly entering debris cannot enter the outer cover in time and will still accumulate on the upper surfaces of the primary filter cover, secondary filter cover, and tertiary filter cover. At this time, the water pressure above the main pipeline will continuously increase. When the water pressure exceeds the elastic force of the elastic telescopic rod, the cleaning ring will move downward along the outer surface of the main pipeline, thereby opening the bottom of the outer cover. At this time, the high-pressure water carries the debris inside the outer cover and is instantly flushed out, thus achieving the effect of self-cleaning while filtering, further reducing the blockage probability of the device, and greatly improving the practicality of this device. Brief Description of the Drawings

[0017] Figure 1 is the schematic structural diagram of the whole of the present invention; Figure 2 is the schematic structural diagram of the auxiliary mechanism of the present invention; Figure 3 is the schematic structural diagram of the communication slot of the present invention; Figure 4 is the schematic installation structure diagram of the elastic telescopic rod of the present invention; Figure 5 is the schematic internal structure diagram of the main pipeline of the present invention; Figure 6 is the schematic diagram of the turbine and its connection structure of the present invention; Figure 7 is the schematic diagram of the cleaning bag and its connection structure of the present invention; Figure 8 is the schematic structural diagram of the drive assembly of the present invention.

[0018] In the figure: 1, main pipeline; 2, filtration mechanism; 21, primary filter cover; 22, secondary filter cover; 23, tertiary filter cover; 24, filtration tank; 25, mounting ring; 26, rotating rod; 27, turbine; 28, drive assembly; 29, bottom ring; 210, top ring; 211, bearing rod; 212, convex plate; 213, mounting cover; 214, cleaning bag; 215, cleaning hole; 216, cleaning rod; 3, auxiliary mechanism; 31, outer cover; 32, communication slot; 33, retaining ring; 34, cleaning ring; 35, bearing ring; 36, elastic telescopic rod; 37, bottom pipe; 38, filter plate. Detailed Embodiment

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] The First Embodiment: AsFigures 1 to 8 As shown in the figure, the present invention provides a technical solution: a pre-interception and filtration device for the inlet flow channel of a pumping station, including a main pipeline 1, the bottom of the main pipeline 1 is fixedly connected to the input end of the pumping station, and further includes: A filtration mechanism 2, the filtration mechanism 2 is fixedly installed inside the main pipeline 1; An auxiliary mechanism 3, the auxiliary mechanism 3 is fixedly installed on the outer surface of the main pipeline 1; Among them, the filtration mechanism 2 includes a primary filtration cover 21, the primary filtration cover 21 is fixedly connected to the inner surface of the top of the main pipeline 1, a secondary filtration cover 22 is arranged below the primary filtration cover 21, and a tertiary filtration cover 23 is arranged below the secondary filtration cover 22, wherein the primary filtration cover 21, the secondary filtration cover 22 and the tertiary filtration cover 23 are arranged on the same central axis.

[0021] The filtration mechanism 2 further includes a filtration tank 24, the filtration tank 24 is respectively penetrated and opened on the upper surfaces of the primary filtration cover 21, the secondary filtration cover 22 and the tertiary filtration cover 23. Among them, the primary filtration cover 21, the secondary filtration cover 22 and the tertiary filtration cover 23 are set to be conical, and the filtration tanks 24 on the primary filtration cover 21, the secondary filtration cover 22 and the tertiary filtration cover 23 are set to gradually decrease.

[0022] Below the tertiary filtration cover 23, there is an installation ring 25, the installation ring 25 is fixedly connected to the inner surface of the bottom of the main pipeline 1, two installation rings 25 are arranged parallel to each other along the inner surface of the main pipeline 1, and a rotating rod 26 is rotatably connected through the middle of the installation ring 25.

[0023] The top of the rotating rod 26 penetrates through the primary filtration cover 21, the secondary filtration cover 22 and the tertiary filtration cover 23, and a turbine 27 is fixedly connected to the outer surface of the bottom of the rotating rod 26.

[0024] On the outer surface of the top of the rotating rod 26, there is a driving component 28. Two driving components 28 are arranged along the outer surface of the rotating rod 26, and the two driving components 28 are respectively arranged below the primary filtration cover 21 and the secondary filtration cover 22. The driving component 28 includes a bottom ring 29, the bottom ring 29 is fixedly sleeved on the outer surface of the rotating rod 26, a top ring 210 is fitted on the upper surface of the bottom ring 29, the top ring 210 and the bottom ring 29 are mutually clamped, the top ring 210 slides up and down and is sleeved on the outer surface of the rotating rod 26, and the top of the top ring 210 is elastically slidably connected to the middle bottom surfaces of the primary filtration cover 21 and the secondary filtration cover 22 through connecting rods respectively.

[0025] On the outer surface of the upper top ring 210, there is a bearing rod 211, the bearing rod 211 is arranged obliquely, a convex plate 212 is fixedly connected to the upper surface of the bearing rod 211, the upper surface of the convex plate 212 is set to be inclined and the inclination angle gradually increases, and the convex plate 212 is arranged directly below the filtration tank 24 on the primary filtration cover 21.

[0026] The outer surface of the lower top ring 210 is fixedly connected with an installation cover 213. The upper surface of the installation cover 213 is fixedly connected with a cleaning bag 214. The cleaning bag 214 covers the upper surface of the installation cover 213. A cleaning hole 215 is formed through the upper surface of the cleaning bag 214. The cleaning hole 215 is directly opposite to the filtering groove 24 on the secondary filter cover 22. The outer surface of the lower bottom ring 29 is fixedly connected with a cleaning rod 216. The cleaning rod 216 is arranged in a fitting manner on the upper surface of the tertiary filter cover 23. The cleaning rod 216 is arranged obliquely.

[0027] The second embodiment: As Figures 1 to 8 shown, the auxiliary mechanism 3 includes an outer cover 31. The outer cover 31 is annular. The outer cover 31 is fixedly sleeved on the outer surface of the main pipeline 1. A communication slot 32 is formed through the outer surface of the main pipeline 1. The communication slots 32 in the same plane are set as a group. There are three groups of communication slots 32. The sizes of the three groups of communication slots 32 are gradually decreased from top to bottom. The communication slots 32 are respectively arranged on the outer sides of the primary filter cover 21, the secondary filter cover 22 and the tertiary filter cover 23. A retaining ring 33 is arranged on the outer side of the communication slot 32. The retaining ring 33 is fixedly sleeved on the outer surface of the main pipeline 1.

[0028] A cleaning ring 34 is slidably arranged on the inner surface of the bottom of the outer cover 31. The inner surface of the cleaning ring 34 is slidably connected to the outer surface of the main pipeline 1. The upper surface of the cleaning ring 34 is arranged obliquely. A bearing ring 35 is fixedly sleeved on the outer surface of the bottom of the main pipeline 1. An elastic telescopic rod 36 is fixedly connected through the upper surface of the bearing ring 35. The top of the elastic telescopic rod 36 is fixedly connected to the bottom surface of the cleaning ring 34. Six elastic telescopic rods 36 are fixedly arranged at equal intervals around the central axis of the bearing ring 35, and the output ends of the six elastic telescopic rods 36 are fixedly connected. A bottom pipe 37 is slidably sleeved through the upper surface of the cleaning ring 34. The bottom of the bottom pipe 37 is fixedly connected and communicated with the outer surface of the bottom of the main pipeline 1. A filter plate 38 is fixedly connected to the top of the bottom pipe 37.

[0029] When in operation, when it is necessary to filter the water inlet of the pumping station, the bottom of this device can be installed at the water inlet end of the pumping station. At this time, the water will enter the main pipeline 1 before entering the pumping station. When the water flow carrying debris enters the interior of the main pipeline 1, it will pass through the first-stage filter cover 21, the second-stage filter cover 22, and the third-stage filter cover 23 and then enter the pumping station through the bottom of the main pipeline 1 after filtration. Among them, the filter slot 24 of the first-stage filter cover 21 is relatively large, which can block garbage such as branches and bottles doped in the water. After the large debris is blocked, the water carrying neutral debris such as stones and small debris will enter the second-stage filter cover 22 along the filter slot 24 of the first-stage filter cover 21 and be filtered through the filter slot 24 on the second-stage filter slot 24. Then, the water carrying small debris such as gravel blocks will enter the third-stage filter cover 23 with the water flow and be blocked. Finally, the pre-filtered water flow is output from the bottom of the main pipeline 1 through the third-stage filter cover 23. By setting three-stage filtration, hierarchical interception of different debris can be achieved. Compared with the currently commonly used fine sieve mesh filtration method, it not only improves the flow effect of the water flow, but also effectively extends the time when the filtration system is blocked by intercepting debris hierarchically, thereby greatly extending the working time of this device and avoiding the problem of low working efficiency of the pumping station caused by frequent shutdown maintenance. At the same time, since the first-stage filter cover 21, the second-stage filter cover 22, and the third-stage filter cover 23 are conically arranged, the intercepted debris will accumulate at the edges of the first-stage filter cover 21, the second-stage filter cover 22, and the third-stage filter cover 23, thereby further improving the flow capacity of the water flow, reducing the probability of blockage, and avoiding the risk that the flat filtration system will cause the water pressure to squeeze the debris on the filtration system and cannot move, accelerating the blockage. After the water flow passes through the third-stage filter cover 23, it will impact the turbine 27, causing the turbine 27 to start rotating with the water flow, that is, driving the rotating rod 26 to start rotating. As the rotating rod 26 rotates, the bottom ring 29 starts to rotate relative to the top ring 210. During the rotation of the bottom ring 29, due to the mutual clamping effect, the bottom ring 29 starts to push the top upwards, and then drives the convex plate 212 to move upwards through the connecting bearing rod 211. At this time, the convex plate 212 gradually approaches the filter slot 24 of the first-stage filter plate 38 and finally passes through the filter slot 24 and protrudes from the filter slot 24, thereby lifting the debris such as branches pressed on the first-stage filter plate 38 by the water pressure, helping to gather the debris to the edge of the first-stage filter plate 38, and thus realizing continuous cleaning of the first-stage filter plate 38 during the filtration process, greatly reducing the problem of blockage of the first-stage filter plate 38. And because the upper surface of the convex plate 212 is inclined, when the convex plate 212 protrudes from the filter slot 24, its inner end protrudes from the filter slot 24 first and gradually protrudes from the inside to the outside, thereby realizing cleaning from the inside to the outside when cleaning the first-stage filter plate 38, cooperating with the water flow to further improve the cleaning effect, helping to gather the debris at the edge of the first-stage filter plate 38, and improving the water passing effect of the first-stage filter plate 38. The debris such as stones will gather on the upper surface of the second-stage filter plate 38 after passing through the first-stage filter plate 38. At this time, as the top ring 210 moves upwards,It will drive the installation cover 213 to move upward at the same time, and then drive the cleaning bladder 214 to move upward. Moreover, the cleaning bladder 214 is an elastic bladder. When the upper surface of the cleaning bladder 214 contacts the bottom surface of the secondary filter plate 38 and is gradually squeezed, the inside of it is in a negative pressure state. Then, the water inside it is released through the cleaning holes 215 through the filter grooves 24 on the secondary filter plate 38. Then, in cooperation with the original flow direction of the water flow, an inclined outward driving force is generated on the stones and other sundries gathered on the secondary filter plate 38, so as to help gather the stones and other sundries at the edge of the secondary filter plate 38. When the bottom ring 29 rotates, it will drive the cleaning rod 216 to rotate at the same time, so as to prevent gravel and other sundries from accumulating above the tertiary filter plate 38. At the same time, the cleaning rod 216 is inclined so that when the cleaning rod 216 rotates, an outward driving force will be generated, so as to help gather the gravel and other sundries at the edge of the tertiary filter plate 38. Through the tertiary filtration linkage, not only is the interception and convergence of sundries greatly improved, the flow effect of the water flow is improved, but also the working time of the device is greatly extended, and the probability of the device being blocked and shut down is greatly reduced. When the sundries are accumulated at the edges of the primary filter cover 21, the secondary filter cover 22 and the tertiary filter cover 23, they will enter the inside of the outer cover 31 through the communication slots 32 on the main pipe 1 and are squeezed at the bottom of the outer cover 31 by the water pressure, that is, above the cleaning ring 34. At this time, the water flow carried by the sundries passes through the filter of the filter plate 38 and then re-enters the main pipe 1 through the bottom pipe 37, that is, the sundries on the primary filter cover 21, the secondary filter cover 22 and the tertiary filter cover 23 are cleaned in real time, preventing the sundries from staying on the upper surfaces of the primary filter cover 21, the secondary filter cover 22 and the tertiary filter cover 23, and further improving the working effect of the device. When the sundries inside the outer cover 31 gradually increase and the newly entered sundries cannot enter the outer cover 31 in time and still accumulate on the upper surfaces of the primary filter cover 21, the secondary filter cover 22 and the tertiary filter cover 23, the water pressure above the main pipe 1 will continuously increase. When the water pressure exceeds the elastic force of the elastic telescopic rod 36, the cleaning ring 34 will move downward along the outer surface of the main pipe 1, thus opening the bottom of the outer cover 31. At this time, the high-pressure water carries the sundries inside the outer cover 31 and is instantly flushed out, thus realizing the effect of self-cleaning while filtering, further reducing the blockage probability of the device and greatly improving the practicability of the device.

[0030] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pre-interception and filtering device for a water inlet channel of a pump station, comprising a main pipeline (1), characterized in that: The bottom of the main pipeline (1) is fixedly connected to the input end of the pump station, and further comprises: A filtering mechanism (2), wherein the filtering mechanism (2) is fixedly installed inside the main pipeline (1); An auxiliary mechanism (3), wherein the auxiliary mechanism (3) is fixedly mounted on the outer surface of the main pipeline (1); The filtering mechanism (2) comprises a primary filter cover (21), the primary filter cover (21) being fixedly connected to the top inner surface of the main pipe (1), a secondary filter cover (22) being arranged below the primary filter cover (21), and a tertiary filter cover (23) being arranged below the secondary filter cover (22), wherein the primary filter cover (21), the secondary filter cover (22) and the tertiary filter cover (23) are arranged on the same central axis; The filtering mechanism (2) further comprises a filtering tank (24); a mounting ring (25) is arranged below the third-stage filtering cover (23); a rotating rod (26) is rotatably connected to the middle portion of the mounting ring (25); a turbine (27) is fixedly connected to the bottom outer surface of the rotating rod (26); a driving assembly (28) is arranged on the top outer surface of the rotating rod (26); the driving assembly (28) comprises a bottom ring (29); the bottom ring (29) is fixedly sleeved on the outer surface of the rotating rod (26); and the upper surface of the bottom ring (29) is A top ring (210) is fitted thereon, the outer surface of the top ring (210) is fixedly connected to a bearing rod (211), the upper surface of the bearing rod (211) is fixedly connected to a convex plate (212), the outer surface of the top ring (210) is fixedly connected to a mounting cover (213), the upper surface of the mounting cover (213) is fixedly connected to a cleaning capsule (214), the upper surface of the cleaning capsule (214) is penetrated by a cleaning hole (215), and the outer surface of the bottom ring (29) is fixedly connected to a cleaning rod (216).

2. A pump station water inlet channel pre-interception and filtering device according to claim 1, characterized in that: The filter grooves (24) are respectively arranged through the upper surfaces of the primary filter cover (21), the secondary filter cover (22) and the tertiary filter cover (23), wherein the primary filter cover (21), the secondary filter cover (22) and the tertiary filter cover (23) are arranged in a conical shape, and the filter grooves (24) on the primary filter cover (21), the secondary filter cover (22) and the tertiary filter cover (23) are arranged to gradually decrease.

3. A pump station inlet flow channel pre-interception and filtering device according to claim 2, characterized in that: The mounting ring (25) is fixedly connected to the inner surface of the bottom of the main pipeline (1), and two mounting rings (25) are arranged parallel to each other along the inner surface of the main pipeline (1).

4. A pump station inlet flow channel pre-interception and filtering device according to claim 3, characterized in that: The top of the rotating rod (26) passes through the primary filter cover (21), the secondary filter cover (22) and the tertiary filter cover (23).

5. A pump station inlet flow channel pre-interception and filtering device according to claim 4, characterized in that: Two drive assemblies (28) are arranged along the outer surface of the rotating rod (26), and the two drive assemblies (28) are respectively arranged below the primary filter cover (21) and the secondary filter cover (22). The top ring (210) and the bottom ring (29) are mutually engaged, and the top ring (210) is slidably sleeved on the outer surface of the rotating rod (26) up and down, and the top of the top ring (210) is elastically slidably connected to the middle bottom surface of the primary filter cover (21) and the secondary filter cover (22) through a connecting rod.

6. A pump station inlet flow channel pre-interception and filtering device according to claim 5, characterized in that: The bearing rod (211) is arranged in an inclined manner, the upper surface of the convex plate (212) is arranged in an inclined shape with a gradually increasing inclination angle, and the convex plate (212) is arranged directly below the filter groove (24) on the primary filter cover (21).

7. A pump station water inlet channel pre-interception and filtering device according to claim 6, characterized in that: The cleaning bag (214) covers the upper surface of the mounting cover (213), the cleaning hole (215) faces the filter slot (24) on the secondary filter cover (22), and the cleaning rod (216) is arranged in close contact with the upper surface of the tertiary filter cover (23), wherein the cleaning rod (216) is arranged in an inclined manner.

8. A pump station water inlet channel pre-interception and filtering device according to claim 7, characterized in that: The auxiliary mechanism (3) comprises an outer cover (31), the outer cover (31) is annular, the outer cover (31) is fixedly sleeved on the outer surface of the main pipe (1), the outer surface of the main pipe (1) is penetrated by a connecting slot (32), the connecting slots (32) are arranged as a group on the same plane, the connecting slots (32) are arranged in three groups, the sizes of the three groups of connecting slots (32) are arranged to gradually decrease from top to bottom, the connecting slots (32) are respectively arranged on the outer sides of the primary filter cover (21), the secondary filter cover (22) and the tertiary filter cover (23), the outer sides of the connecting slots (32) are provided with a retaining ring (33), the retaining ring (33) is fixedly sleeved on the outer surface of the main pipe (1).

9. A pump station inlet flow channel pre-interception and filtering device according to claim 8, characterized in that: A cleaning ring (34) is slidably provided on the inner surface of the bottom of the outer cover (31), the inner surface of the cleaning ring (34) is slidably connected to the outer surface of the main pipe (1), the upper surface of the cleaning ring (34) is inclined, a bearing ring (35) is fixedly sleeved on the outer surface of the bottom of the main pipe (1), an elastic telescopic rod (36) is passed through and fixedly connected to the upper surface of the bearing ring (35), the top of the elastic telescopic rod (36) is fixedly connected to the bottom surface of the cleaning ring (34), six elastic telescopic rods (36) are arranged at fixed intervals around the central axis of the bearing ring (35), and the output ends of the six elastic telescopic rods (36) are fixedly connected to each other, a bottom pipe (37) is passed through and slidably sleeved on the upper surface of the cleaning ring (34), the bottom of the bottom pipe (37) is passed through and fixedly connected to the outer surface of the bottom of the main pipe (1), and a filter plate (38) is fixedly connected to the top of the bottom pipe (37).

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