Filtering device for water conservancy project

Abstract

The invention belongs to the field of water conservancy filtering, and particularly discloses a water conservancy project filtering device which comprises a filtering box, a water inlet assembly, a rotary filtering device and a floating triggering backwashing anti-blocking device. A pure mechanical water level sensing mechanism and a self-adaptive linkage mechanism are creatively fused, accurate positive correlation matching of the blocking degree and the flushing strength is achieved, the device can automatically trigger and intelligently adjust the back flushing strength according to real-time water level changes in the filter cartridge, and therefore on the basis of dynamic rotary filtering, the back flushing efficiency is improved. The device achieves the technical effects of on-demand flushing, high efficiency and energy conservation, is ingenious and reliable in structure, is particularly suitable for severe working conditions of water conservancy projects, and fundamentally solves the technical problems that a traditional filtering device lags in reaction, is fixed in flushing force and is poor in environmental adaptability.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of water conservancy filtration, and particularly relates to a filter device for water conservancy projects. BACKGROUND

[0002] Water conservancy projects play a fundamental role in irrigation, water supply, flood control, and hydropower generation, etc. During operation, water bodies often need to be filtered to remove silt, algae, floating objects and other solid impurities, to ensure the safe and stable operation of subsequent facilities (such as pump stations, gates, sprinklers, and water turbines). At present, the filter devices commonly used in water conservancy projects are mostly static filter screens or fixed filter cartridge structures.

[0003] In actual application, especially for water sources containing a large amount of suspended particulate matter (such as high-silt water flow in flood season), the filter screen is prone to rapid clogging. This not only leads to a sharp decline in filtration efficiency and insufficient water capacity, but also causes an increase in the pressure difference before and after the system, increasing the energy consumption of the water pump, and even may cause structural damage or system shutdown due to severe clogging. The existing technology usually uses periodic manual cleaning or a simple backwashing system to solve the clogging problem. However, the manual cleaning method is inefficient, labor-intensive, and difficult to achieve continuous operation, which is not suitable for modern water conservancy projects with high automation requirements. The traditional backwashing system, whose washing action is mostly dependent on timing control or pressure difference sensor triggering, has obvious defects: timing washing cannot accurately match the actual clogging condition, and may not be sufficient when the water quality is poor, and may cause unnecessary waste of water resources and energy loss when the water quality is good; although the use of a pressure difference sensor has improved, in the complex and harsh environment of water conservancy projects, the electronic components are prone to moisture, corrosion or mud, and the reliability is reduced, with high maintenance cost.

[0004] In addition, the water quality and impurity load of water conservancy projects often fluctuate sharply with the seasons and weather, and the fixed washing program is difficult to adapt to such dynamic changes. For example, when the silt content increases dramatically, the fixed washing intensity may not be enough to completely remove the dense and adhered silt layer; while in normal times, the same intensity is too large. This contradiction leads to the dilemma of "incomplete washing" or "excessive washing" of the existing device when dealing with complex working conditions of water conservancy projects, and the overall energy efficiency and adaptability are not good.

[0005] Therefore, it is urgent to develop a filter device that can automatically and real-time perceive the clogging degree, intelligently adjust the washing intensity, and adapt to the harsh environment of water conservancy projects, to realize efficient, energy-saving, and low-maintenance continuous operation. SUMMARY

[0006] In view of the above, in order to overcome the defects of the prior art, the application provides a filtering device for water conservancy projects, which creatively combines a pure mechanical water level sensor and a self-adaptive linkage mechanism to realize accurate positive correlation matching of the degree of blockage and the intensity of flushing. The device automatically triggers and intelligently adjusts the intensity of reverse flushing according to the change of the water level in the filter cartridge, thereby achieving the technical effects of "flushing on demand and high efficiency and energy saving" on the basis of dynamic rotary filtration. The device is clever and reliable in structure, especially suitable for harsh working conditions of water conservancy projects, and fundamentally solves the technical problems of reaction lag, fixed flushing intensity and poor environmental adaptability of traditional filtering devices.

[0007] The technical scheme adopted by the application is as follows: The application provides a filtering device for water conservancy projects, which comprises a filter box, a water inlet assembly, a rotary filtering device and a floating trigger reverse flushing anti-blocking device. The water inlet assembly is arranged on the filter box, the rotary filtering device is arranged in the filter box, the water inlet assembly is connected with the rotary filtering device, and the floating trigger reverse flushing anti-blocking device is arranged on the rotary filtering device and the filter box. The floating trigger reverse flushing anti-blocking device comprises a floating trigger and a flushing force self-adjusting anti-blocking piece. The floating trigger is movably arranged in the rotary filtering device, and the flushing force self-adjusting anti-blocking piece is arranged in the filter box and connected with the floating trigger.

[0008] Further, the flushing force self-adjusting anti-blocking piece comprises a double-rack linkage piece, a reverse engagement flushing device and an eccentric driving device. The reverse engagement flushing device is arranged on the inner side wall of the filter box, the eccentric driving device is arranged on the inner side wall of the filter box, the double-rack linkage piece is rotationally connected with the eccentric driving device, and the reverse engagement flushing device is meshingly connected with the double-rack linkage piece.

[0009] As a preferred, the reverse engagement flushing device comprises a flushing barrel, a flushing piston, a pressurized flushing pipe and a water suction pipe. The flushing barrel is arranged on the inner side wall of the filter box, the flushing piston is movably arranged in the flushing barrel, the upper end of the flushing piston is provided with a flushing rack, the flushing barrel is provided with a flushing limiting frame, the flushing rack is slidingly clamped in the flushing limiting frame, the flushing rack is meshingly connected with the double-rack linkage piece, the pressurized flushing pipe is penetratingly arranged at the center of the bottom wall of the flushing barrel, the side wall of the pressurized flushing pipe is provided with a flushing hole, the water suction pipe is penetratingly arranged on the side wall of the bottom end of the flushing barrel, the length of the water suction pipe is greater than that of the pressurized flushing pipe, a water suction one-way valve is arranged at the connection position of the water suction pipe and the flushing barrel, so that water can only be sucked from the water suction pipe into the flushing barrel, and a flushing one-way valve is arranged at the connection position of the pressurized flushing pipe and the flushing barrel, so that water can only be pressed from the flushing barrel into the pressurized flushing pipe.

[0010] Further, the eccentric driving device comprises a fixed plate, an eccentric rotating member, a driving plate and a driving motor, the fixed plate is arranged on the inner side wall of the filter box, the eccentric rotating member is rotatably arranged on the fixed plate, one end of the driving plate is hingedly connected with the eccentric rotating member, the other end of the driving plate is hingedly connected with the center of the double rack linkage member, the driving motor is arranged on the inner side wall of the filter box, and the output end of the driving motor is connected with the eccentric rotating member.

[0011] Further, the floating trigger member comprises a floating plate, a switch trigger member and a force adjusting member, the floating plate is movably arranged in the rotary filter device, the switch trigger member is arranged on the floating plate, and the force adjusting member is arranged on the floating plate and connected with the double rack linkage member in meshing mode.

[0012] Further, the force adjusting member comprises a force adjusting column and a force adjusting rack, the force adjusting column is arranged on the floating plate, and the force adjusting rack is arranged on the force adjusting column and connected with the double rack linkage member in meshing mode.

[0013] Further, the force adjusting member comprises a force adjusting column and a force adjusting rack, the force adjusting column is arranged on the floating plate, and the force adjusting rack is arranged on the force adjusting column and connected with the double rack linkage member in meshing mode.

[0014] Further, the rotary filter device comprises an upper cover plate, a filter cylinder, a pulling cleaning member, a rotary base and a rotary motor, the upper cover plate is arranged on the inner side wall of the filter box, the rotary base is rotatably arranged in the filter box, the filter cylinder is arranged on the rotary base, the side wall of the filter cylinder is provided with filter holes, the pulling cleaning member is pullably arranged at the bottom end of the filter cylinder, the rotary motor is arranged in the filter box, and the output end of the rotary motor is connected with the rotary base; the floating plate is movably arranged in the filter cylinder, the inner side wall of the filter cylinder is provided with a limiting protrusion, the limiting protrusion prevents the position of the floating plate from being too low to cause the force adjusting rack to be separated from the double rack linkage member, the trigger column passes through the upper cover plate and is connected with the floating plate, the force adjusting column passes through the upper cover plate and is connected with the floating plate, the upper cover plate is provided with a lifting limiting sliding frame, and the force adjusting rack is slidingly arranged in the lifting limiting sliding frame in clamping mode.

[0015] Further, the rotary filter device comprises an upper cover plate, a filter cylinder, a pulling cleaning member, a rotary base and a rotary motor, the upper cover plate is arranged on the inner side wall of the filter box, the rotary base is rotatably arranged in the filter box, the filter cylinder is arranged on the rotary base, the side wall of the filter cylinder is provided with filter holes, the pulling cleaning member is pullably arranged at the bottom end of the filter cylinder, the rotary motor is arranged in the filter box, and the output end of the rotary motor is connected with the rotary base; the floating plate is movably arranged in the filter cylinder, the inner side wall of the filter cylinder is provided with a limiting protrusion, the limiting protrusion prevents the position of the floating plate from being too low to cause the force adjusting rack to be separated from the double rack linkage member, the trigger column passes through the upper cover plate and is connected with the floating plate, the force adjusting column passes through the upper cover plate and is connected with the floating plate, the upper cover plate is provided with a lifting limiting sliding frame, and the force adjusting rack is slidingly arranged in the lifting limiting sliding frame in clamping mode.

[0016] Further, the filter box is provided with a control box, a filter support, a water outlet, a cleaning outlet and a cleaning door, the control box is arranged on the inner side wall of the upper end of the filter box, the filter support is arranged on the inner side wall of the bottom end of the filter box, the water outlet is arranged on the side wall of the filter box, the cleaning outlet is arranged on the bottom end of the side wall of the filter box, the water outlet is higher than the cleaning outlet, and the cleaning door is arranged on the side wall of the filter box; the control box comprises a control cavity, a trigger switch and a power supply, the control cavity is arranged on the inner side wall of the upper end of the filter box, the trigger switch is arranged on the bottom wall of the control box, the upper trigger plate is on the same axis as the trigger switch, the power supply is arranged in the control cavity, and the trigger switch, the power supply and the driving motor form a closed loop; the filter support comprises a support plate frame and a motor cavity, the support plate frame is arranged on the inner side wall of the bottom end of the filter box, the rotating base is rotatably arranged on the support plate frame, and the motor cavity is arranged in the support plate frame.

[0017] The application has the following beneficial effects by adopting the above structure: 1. Realize full-automatic intelligent anti-blocking under harsh working conditions, and guarantee the continuity of engineering: the water level sensing and triggering system of the application is composed of pure mechanical or simple electromechanical structures (such as floating plates and trigger switches), which is not sensitive to silt and humid environment, has high reliability, can directly monitor the water level change caused by blocking in the filter cylinder in real time, and automatically starts cleaning as soon as blocking occurs, and automatically stops after cleaning, so that the whole process is automatic, which perfectly adapts to the harsh working conditions such as field, unattended or harsh environment in water conservancy engineering, significantly reduces the frequency and risk of manual inspection and maintenance, and effectively guarantees the continuous and stable operation of irrigation, water supply and other systems. 2. Unique self-adaptive flushing force mechanism, efficient and energy-saving response to water quality fluctuation: the core advantage of the application lies in the innovative "water level-flushing force" linkage mechanism (flushing force adjusting column, flushing force adjusting rack, double rack linkage piece, etc.), which directly and mechanically converts the severity of blocking (water level height) into the stroke of the flushing piston, so as to realize stepless and self-adaptive adjustment of flushing force. In the face of seasonal high-sand water flow commonly seen in water conservancy engineering, serious blocking will trigger high water level, and then drive strong flushing to ensure effective stripping of stubborn silt. In normal water quality, mild blocking only causes mild flushing, which greatly saves pumping energy. This "on-demand allocation" flushing strategy fundamentally solves the inadaptation problem of fixed flushing mode in water conservancy dynamic working conditions, and realizes the best balance between efficient cleaning and operation economy.

[0018] 3. Dynamic rotation filtering combined with reverse flushing, improving cleaning effect and filter screen life: The device drives the filter drum to rotate during filtering, making the water flow uniform and delaying local blockage. During flushing, the rotating filter drum cooperates with the adjustable high-pressure reverse water flow from inside to outside, forming a three-dimensional flushing of the filter hole in all directions, with no cleaning dead angle. The combination of "dynamic filtering + intelligent backflushing" is particularly suitable for processing the easily cemented silt and flexible impurities in water conservancy projects, effectively restoring the permeability of the filter screen and greatly extending the service life of the core filter component, reducing replacement costs; 4. Strong and reliable structure and convenient maintenance, suitable for water conservancy applications: The sensing, adjusting and driving mechanism of the entire device is designed ingeniously, mainly using mechanical linkage, with simple and strong structure, strong resistance to vibration, corrosion and electromagnetic interference in water conservancy sites, etc. At the same time, the device is provided with a pull-out cleaning part and a cleaning door, which facilitates quick cleaning of large debris accumulated in the filter drum. The cleaning port of the filter box also facilitates emptying of sediments. This design takes into account the "intelligence" of automatic operation and the "convenience" of daily maintenance, which fully meets the dual requirements of high reliability and easy maintenance of water conservancy equipment. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The overall structure of a filter device for water conservancy projects is proposed. Figure 2 The left view of a filter device for water conservancy projects is proposed. Figure 3 The front view of a filter device for water conservancy projects is proposed. Figure 4 The top view of a filter device for water conservancy projects is proposed. Figure 5 The bottom view of a filter device for water conservancy projects is proposed. Figure 6 The cross-sectional structure of a filter device for water conservancy projects is proposed. Figure 7 The internal structure of a filter device for water conservancy projects is proposed. Figure 8 The structure of the upper cover plate is proposed. Figure 9 The combination of the filter drum and the pull-out cleaning part is proposed. Figure 10 The structure of the pull-out cleaning part is proposed. Figure 11 The structure of the water inlet assembly is proposed. Figure 12 The structure of the filter box is proposed.

[0020] Wherein, 1, filter box, 2, water inlet assembly, 3, rotary filter device, 4, floating trigger backwash anti-blocking device, 5, floating trigger, 6, impact self-adjusting anti-blocking piece, 7, double rack linkage, 8, reverse meshing flushing device, 9, eccentric drive device, 10, flushing barrel, 11, flushing piston, 12, pressurized flushing pipe, 13, water suction pipe, 14, flushing rack, 15, flushing limit frame, 16, flushing hole, 17, water suction check valve, 18, flushing check valve, 19, fixed plate piece, 20, eccentric rotating piece, 21, drive plate, 22, drive motor, 23, floating plate, 24, switch trigger piece, 25, impact adjusting piece, 26, impact adjusting column, 27, impact adjusting rack, 28, trigger column, 29, lower supporting plate, 30, upper trigger plate, 31, spring, 32, guide telescopic rod, 33, upper cover plate, 34, filter cartridge, 35, pull cleaning piece, 36, rotary base, 37, rotary motor, 38, filter hole, 39, limit protrusion, 40, lifting limit sliding frame, 41, water inlet pipe, 42, water pump, 43, transmission pipe, 44, control box, 45, filter supporting piece, 46, water outlet, 47, cleaning outlet, 48, cleaning door, 49, control cavity, 50, trigger switch, 51, power supply piece, 52, supporting plate frame, 53, motor cavity.

[0021] The accompanying drawings are used to provide further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0024] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown in the figure, the present application provides a filter device for hydraulic engineering, which comprises a filter box 1, a water inlet assembly 2, a rotary filter device 3 and a floating trigger backwashing anti-blocking device 4. The water inlet assembly 2 is arranged on the filter box 1, the rotary filter device 3 is arranged in the filter box 1, the water inlet assembly 2 is connected with the rotary filter device 3, and the floating trigger backwashing anti-blocking device 4 is arranged on the rotary filter device 3 and the filter box 1.

[0025] As shown in the figure, Figure 1 , Figure 6 , Figure 7 , Figure 12 As shown in the figure, the filter box 1 is provided with a control box 44, a filter support 45, a water outlet 46, a cleaning outlet 47 and a cleaning door 48. The control box 44 is arranged on the inner side wall of the upper end of the filter box 1, the filter support 45 is arranged on the inner side wall of the bottom end of the filter box 1, the water outlet 46 is arranged on the side wall of the filter box 1, the cleaning outlet 47 is arranged at the bottom end of the side wall of the filter box 1, the water outlet 46 is higher than the cleaning outlet 47, and the cleaning door 48 is arranged on the side wall of the filter box 1. The control box 44 comprises a control cavity 49, a trigger switch 50 and a power supply 51. The control cavity 49 is arranged on the inner side wall of the upper end of the filter box 1, the trigger switch 50 is arranged on the bottom wall of the control box 44, the upper trigger plate 30 is on the same axis as the trigger switch 50, the power supply 51 is arranged in the control cavity 49, and the trigger switch 50 and the power supply 51 are electrically connected. The filter support 45 comprises a support plate frame 52 and a motor cavity 53. The support plate frame 52 is arranged on the inner side wall of the bottom end of the filter box 1, and the motor cavity 53 is arranged in the support plate frame 52.

[0026] As shown in the figure, Figure 1 , Figure 6 , Figure 11 As shown in the figure, the water inlet assembly 2 comprises a water inlet pipe 41, a water pump 42 and a transmission pipe 43. The water inlet pipe 41 is arranged on the outer side wall of the filter box 1, the transmission pipe 43 is connected with the water inlet pipe 41, the transmission pipe 43 is connected with the rotary filter device 3, and the water pump 42 is arranged at the connection between the water inlet pipe 41 and the transmission pipe 43.

[0027] As shown in the figure, Figure 1 , Figure 6 , Figure 7 , Figure 9 , Figure 10As shown, the rotary filtering device 3 includes an upper cover plate 33, a filtering cylinder 34, a pull cleaning piece 35, a rotary base 36 and a rotary motor 37. The upper cover plate 33 is arranged on the inner side wall of the filtering box 1. The rotary base 36 is rotatably arranged on the support plate frame 52. The filtering cylinder 34 is arranged on the rotary base 36. The transmission pipe 43 is connected with the filtering cylinder 34 through the upper cover plate 33. The filtering cylinder 34 is provided with filter holes 38 on the side wall. The pull cleaning piece 35 is pullably arranged at the bottom end of the filtering cylinder 34. The rotary motor 37 is arranged in the motor cavity 53. The output end of the rotary motor 37 is connected with the rotary base 36. The floating plate 23 is movably arranged in the filtering cylinder 34. The inner side wall of the filtering cylinder 34 is provided with a limiting protrusion 39. The limiting protrusion 39 prevents the floating plate 23 from being too low to cause the impact force adjusting rack 27 to be separated from the double-rack linkage 7. The trigger column 28 is connected with the floating plate 23 through the upper cover plate 33. The impact force adjusting column 26 is connected with the floating plate 23 through the upper cover plate 33. The upper cover plate 33 is provided with a lifting limiting sliding frame 40. The impact force adjusting rack 27 is slidingly arranged in the lifting limiting sliding frame 40.

[0028] As shown in Figure 1 , Figure 6 , Figure 7 , Figure 8 As shown, the floating trigger backwashing anti-blocking device 4 includes a floating trigger piece 5 and an impact force self-adjusting anti-blocking piece 6. The floating trigger piece 5 is movably arranged in the rotary filtering device 3. The impact force self-adjusting anti-blocking piece 6 is arranged in the filtering box 1. The impact force self-adjusting anti-blocking piece 6 is connected with the floating trigger piece 5. The floating trigger piece 5 includes the floating plate 23, a switch trigger piece 24 and an impact force adjusting piece 25. The floating plate 23 is movably arranged in the filtering cylinder 34. The switch trigger piece 24 is arranged on the floating plate 23 through the upper cover plate 33. The impact force adjusting piece 25 is arranged on the floating plate 23 through the upper cover plate 33. The impact force adjusting piece 25 includes the impact force adjusting column 26 and the impact force adjusting rack 27. The impact force adjusting column 26 is arranged on the floating plate 23 through the upper cover plate 33. The impact force adjusting rack 27 is arranged on the impact force adjusting column 26. The impact force adjusting rack 27 is connected with the double-rack linkage 7 in meshing engagement. The switch trigger piece 24 includes the trigger column 28, a lower support plate 29, an upper trigger plate 30, a spring 31 and a guide telescopic rod 32. The trigger column 28 is arranged on the floating plate 23 through the upper cover plate 33. The lower support plate 29 is arranged at the top end of the trigger column 28. One end of the spring 31 is arranged at the center of the lower support plate 29. The upper trigger plate 30 is connected with the other end of the spring 31. The guide telescopic rod 32 is arranged between the lower support plate 29 and the upper trigger plate 30. The guide telescopic rod 32 is arranged outside the spring 31. The arrangement of the spring 31 and the guide telescopic rod 32 can continuously press the upper trigger plate 30 against the trigger switch 50. The impact self-adjusting anti-blocking piece 6 comprises a double rack linkage 7, a reverse meshing flushing device 8 and an eccentric driving device 9. The reverse meshing flushing device 8 is arranged on the inner side wall of the filter box 1. The eccentric driving device 9 is arranged on the inner side wall of the filter box 1. The double rack linkage 7 is rotationally connected with the eccentric driving device 9. The reverse meshing flushing device 8 is meshingly connected with the double rack linkage 7. The reverse meshing flushing device 8 comprises a flushing barrel 10, a flushing piston 11, a pressurized flushing pipe 12 and a water suction pipe 13. The flushing barrel 10 is arranged on the inner side wall of the filter box 1. The flushing piston 11 is movably arranged in the flushing barrel 10. An upper end of the flushing piston 11 is provided with a flushing rack 14. The flushing barrel 10 is provided with a flushing limiting frame 15. The flushing rack 14 is slidingly clamped in the flushing limiting frame 15. The flushing rack 14 is meshingly connected with the double rack linkage 7. The pressurized flushing pipe 12 is penetratingly arranged at the center of the bottom wall of the flushing barrel 10. A side wall of the pressurized flushing pipe 12 is provided with a flushing hole 16. The water suction pipe 13 is penetratingly arranged on the side wall of the bottom end of the flushing barrel 10. The length of the water suction pipe 13 is greater than that of the pressurized flushing pipe 12. A water suction one-way valve 17 is arranged at the connection between the water suction pipe 13 and the flushing barrel 10, so that water can only be sucked from the water suction pipe 13 into the flushing barrel 10. A flushing one-way valve 18 is arranged at the connection between the pressurized flushing pipe 12 and the flushing barrel 10, so that water can only be pressed from the flushing barrel 10 into the pressurized flushing pipe 12. The eccentric driving device 9 comprises a fixed plate 19, an eccentric rotating piece 20, a driving plate 21 and a driving motor 22. The fixed plate 19 is arranged on the inner side wall of the filter box 1. The eccentric rotating piece 20 is rotationally arranged on the fixed plate 19. One end of the driving plate 21 is hingedly connected with the eccentric rotating piece 20. The other end of the driving plate 21 is hingedly connected with the center of the double rack linkage 7. The driving motor 22 is arranged on the inner side wall of the filter box 1. An output end of the driving motor 22 is connected with the eccentric rotating piece 20. A trigger switch 50, a power supply 51 and the driving motor 22 form a closed loop.

[0029] Specific use, start water pump 42, water pump 42 will be water from the inlet pipe 41 into the transmission pipe 43, transmission pipe 43 transmission to the filter cartridge 34, start rotating motor 37, rotating motor 37 rotates and drives rotating base 36 rotates, rotating base 36 rotates and drives the filter cartridge 34 rotates, filter cartridge 34 rotates and drives the water in it rotates, realize uniform dynamic filtration, filtered water through the filter hole 38 flow out, large particles are isolated in the filter cartridge 34, the filtered water flows to the filter box 1, and is discharged through the water outlet 46, when the filter hole 38 is blocked, the water level in the filter cartridge 34 will rise, the water level rises and drives the floating plate 23 to rise, the floating plate 23 rises and drives the trigger column 28 and the impact adjustment column 26 to rise, the impact adjustment column 26 rises and drives the impact adjustment rack 27 to rise, the impact adjustment rack 27 rises and drives the double rack linkage 7 to rotate, the position of the double rack linkage 7 is adjusted, and the stroke of the washing piston 11 is adjusted, the stroke of the washing piston 11 is positively correlated with the height of the water level, and the technical effect of automatically adjusting the washing force at different water levels is realized, at the same time, the trigger column 28 rises and drives the lower supporting plate 29 to rise, the lower supporting plate 29 rises and drives the spring 31 to rise, the spring 31 rises and drives the upper trigger plate 30 to rise, the upper trigger plate 30 rises and presses the trigger switch 50 under the action of the guide telescopic rod 32, and the driving motor 22 is turned on, the driving motor 22 rotates and drives the eccentric rotating part 20 to rotate, the eccentric rotating part 20 rotates and drives the driving plate 21 to rotate, the driving plate 21 rotates and drives the double rack linkage 7 to reciprocate, the double rack linkage 7 reciprocates and drives the washing rack 14 to reciprocate, the washing rack 14 reciprocates and drives the washing piston 11 to reciprocate in the washing barrel 10, when the washing piston 11 rises, the water filtered into the filter box 1 is sucked into the washing barrel 10 through the water suction pipe 13, when the washing piston 11 descends, the water in the washing barrel 10 is pressed into the pressurized washing pipe 12, and the rotating filter cartridge 34 is reversely washed through the washing hole 16, so that the blocked filter hole 38 is washed clean, when the blockage in the filter hole 38 is washed away, the water level in the filter cartridge 34 decreases, at this time, the floating plate 23 descends, the trigger switch 50 resets, and the driving motor 22 stops rotating, realizing the technical effect of self-induction reverse washing and cleaning of the filter cartridge 34, after filtration is completed, the cleaning door 48 can be opened, the pull cleaning piece 35 is pulled out, the filter cartridge 34 is cleaned, and the filter box 1 is opened, the water in the filter box 1 is discharged, the above is the specific working process of the present application, and the steps can be repeated next time.

[0030] It should be noted that in this text, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment.

[0031] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely divergences of the principles and spirit of the application and that numerous modifications, changes, substitutions, and alterations can be made thereto without departing from the spirit and scope of the application as outlined in the claims and equivalents thereof.

[0032] The above description of the application and its embodiments is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired by it, without departing from the purpose of the application, without creative design, similar structure and embodiments of the technical solution should belong to the protection scope of the application.

Claims

1. A filter device for hydraulic engineering, characterized by: The utility model provides a filter box (1), water inlet subassembly (2), rotating filter device (3) and floating trigger backwash anti -blocking device (4), water inlet subassembly (2) is located filter box (1) on, rotating filter device (3) is located filter box (1) in, water inlet subassembly (2) with rotating filter device (3) through link together, floating trigger backwash anti -blocking device (4) is located rotating filter device (3) and filter box (1) on, floating trigger backwash anti -blocking device (4) including floating trigger (5) and the self -adjusting anti -blocking piece of impact force of piece (6), floating trigger (5) activity is located in rotating filter device (3), the self -adjusting anti -blocking piece of impact force (6) is located in filter box (1), the self -adjusting anti -blocking piece of impact force (6) is linked with floating trigger (5).

2. The filtering device for hydraulic engineering according to claim 1, characterized in that: The self -adjusting anti -blocking piece of impact force (6) includes double rack linkage (7), reverse engagement washing device (8) and eccentric drive device (9), reverse engagement washing device (8) is located filter box (1) inner side wall, eccentric drive device (9) is located filter box (1) inner side wall, double rack linkage (7) is rotatably connected with eccentric drive device (9), reverse engagement washing device (8) is meshingly connected with double rack linkage (7).

3. The filtering device for hydraulic engineering according to claim 2, characterized in that: Reverse engagement washing device (8) includes washing barrel (10), washing piston (11), pressurized washing pipe (12) and water suction pipe (13), washing barrel (10) is located filter box (1) inner side wall, washing piston (11) is movably arranged in the washing barrel (10), the upper end of the washing piston (11) is provided with a washing rack (14), the washing barrel (10) is provided with a washing limiting frame (15), the washing rack (14) is slidingly arranged in the washing limiting frame (15), the washing rack (14) is meshingly connected with the double rack linkage (7), the pressurized washing pipe (12) is throughly arranged at the center of the bottom wall of the washing barrel (10), the side wall of the pressurized washing pipe (12) is provided with a washing hole (16), the water suction pipe (13) is throughly arranged on the side wall of the bottom end of the washing barrel (10), the length of the water suction pipe (13) is greater than the length of the pressurized washing pipe (12), the water suction pipe (13) and the washing barrel (10) are connected with a water suction check valve (17), the pressurized washing pipe (12) and the washing barrel (10) are connected with a washing check valve (18).

4. The filtering device for hydraulic engineering according to claim 3, characterized in that: The eccentric drive device (9) includes a fixed plate (19), an eccentric rotating member (20), a drive plate (21), and a drive motor (22). The fixed plate (19) is arranged on the inner side wall of the filter box (1). The eccentric rotating member (20) is rotatably arranged on the fixed plate (19). One end of the drive plate (21) is hingedly connected with the eccentric rotating member (20). The other end of the drive plate (21) is hingedly connected with the center of the double rack linkage (7). The drive motor (22) is arranged on the inner side wall of the filter box (1). The output end of the drive motor (22) is connected with the eccentric rotating member (20).

5. The filtering device for hydraulic engineering according to claim 4, characterized in that: The floating trigger (5) comprises a floating plate (23), a switch trigger (24) and a force adjusting part (25), the floating plate (23) is movably arranged in the rotary filtering device (3), the switch trigger (24) is arranged on the floating plate (23), the force adjusting part (25) is arranged on the floating plate (23), and the force adjusting part (25) is meshed and connected with the double-rack linkage (7).

6. The filtering device for hydraulic engineering according to claim 5, characterized in that: The force adjusting part (25) comprises a force adjusting column (26) and a force adjusting rack (27), the force adjusting column (26) is arranged on the floating plate (23), the force adjusting rack (27) is arranged on the force adjusting column (26), and the force adjusting rack (27) is meshed and connected with the double-rack linkage (7).

7. The filtering device for hydraulic engineering according to claim 6, characterized in that: The switch trigger (24) comprises a trigger column (28), a lower supporting plate (29), an upper trigger plate (30), a spring (31) and a guide telescopic rod (32), the trigger column (28) is arranged on the floating plate (23), the lower supporting plate (29) is arranged at the top end of the trigger column (28), one end of the spring (31) is arranged at the center of the lower supporting plate (29), the upper trigger plate (30) is connected with the other end of the spring (31), the guide telescopic rod (32) is arranged between the lower supporting plate (29) and the upper trigger plate (30), and the guide telescopic rod (32) is arranged outside the spring (31).

8. The filtering device for hydraulic engineering according to claim 7, characterized in that: The rotary filtering device (3) comprises an upper cover plate (33), a filtering cylinder (34), a pulling cleaning part (35), a rotary base (36) and a rotary motor (37), the upper cover plate (33) is arranged on the inner side wall of the filtering box (1), the rotary base (36) is rotatably arranged in the filtering box (1), the filtering cylinder (34) is arranged on the rotary base (36), a filter hole (38) is arranged on the side wall of the filtering cylinder (34), the pulling cleaning part (35) is pullably arranged at the bottom end of the filtering cylinder (34), the rotary motor (37) is arranged in the filtering box (1), and the output end of the rotary motor (37) is connected with the rotary base (36); the floating plate (23) is movably arranged in the filtering cylinder (34), a limiting protrusion (39) is arranged on the inner side wall of the filtering cylinder (34), the trigger column (28) penetrates through the upper cover plate (33) and is connected with the floating plate (23), the force adjusting column (26) penetrates through the upper cover plate (33) and is connected with the floating plate (23), a lifting limiting sliding frame (40) is arranged on the upper cover plate (33), and the force adjusting rack (27) is clamped and slidably arranged in the lifting limiting sliding frame (40).

9. The filtering device for hydraulic engineering according to claim 8, characterized in that: The water inlet assembly (2) comprises a water inlet pipe (41), a water pump (42) and a transmission pipe (43), the water inlet pipe (41) is arranged on the outer side wall of the filtering box (1), the transmission pipe (43) is connected with the water inlet pipe (41) in a penetrating mode, the transmission pipe (43) penetrates through the upper cover plate (33) and is connected with the filtering cylinder (34) in a penetrating mode, and the water pump (42) is arranged at the connection position of the water inlet pipe (41) and the transmission pipe (43).

10. The filtering device for hydraulic engineering according to claim 9, characterized in that: The filter box (1) is provided with a control box (44), a filter support (45), a water outlet (46), a cleaning and discharging port (47) and a cleaning door (48), the control box (44) is arranged on the inner side wall of the upper end of the filter box (1), the filter support (45) is arranged on the inner side wall of the bottom end of the filter box (1), the water outlet (46) is arranged on the side wall of the filter box (1), the cleaning and discharging port (47) is arranged on the bottom end of the side wall of the filter box (1), the water outlet (46) is higher than the cleaning and discharging port (47), and the cleaning door (48) is arranged on the side wall of the filter box (1); the control box (44) comprises a control cavity (49), a trigger switch (50) and a power supply (51), the control cavity (49) is arranged on the inner side wall of the upper end of the filter box (1), the trigger switch (50) is arranged on the bottom wall of the control box (44), the upper trigger plate (30) is on the same axis as the trigger switch (50), the power supply (51) is arranged in the control cavity (49), and the trigger switch (50), the power supply (51) and the driving motor (22) form a closed loop; the filter support (45) comprises a support plate frame (52) and a motor cavity (53), the support plate frame (52) is arranged on the inner side wall of the bottom end of the filter box (1), the rotating base (36) is rotatably arranged on the support plate frame (52), the motor cavity (53) is arranged in the support plate frame (52), and the rotating motor (37) is arranged in the motor cavity (53).

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