Environment-friendly filter device for water conservancy project
Patent Information
- Application Number
- CN202611394494.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-09-09
- Publication Date
- 2026-10-16
AI Technical Summary
[0004]本发明提供一种环保型水利工程用过滤装置及其方法，用以解决上述技术背景中提到的现有的过滤装置通过在滤网附近设置刮板或毛刷等机械部件，对滤网表面的杂质进行物理刮除或刷扫，单纯的刮刷清理效果不佳，且被刮下的杂质仍然滞留在滤网附近的液体环境中，清理效果难以持久的问题
（1）本发明通过在过滤网下方设置转动的排污管和吸嘴，吸嘴端部的毛刷筒在随吸嘴公转以覆盖整个过滤网表面的同时，传动机构将公转转化为毛刷筒的高速自转，对过滤网下表面进行旋转刷扫以剥离表面杂质，并且固定于毛刷筒转轴上的凸轮同步转动，驱动击打件往复滑动，对过滤网施加周期性击打振动力，使顽固杂质及嵌入滤网缝隙的颗粒被强制振落，有效对过滤网上的黏附性杂质进行剥离，通过吸嘴处的负压，将刷扫和振落的杂质即时吸入并经排污管排出系统，实现了清扫、振动与抽吸的同步联动，既提高了对过滤网上杂质的清理效果，又避免了被剥离的杂质在滤网附近二次附着，使清理效果持久稳定，保证了过滤装置长期稳定高效运行。
Smart Images
Figure CN122912554A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of agricultural irrigation technology, and in particular to an environmentally friendly filtration device for water conservancy projects. Background Technology
[0002] In water conveyance systems of water conservancy projects, filtration devices are generally installed to effectively separate and remove solid impurities in the water through physical interception. The water to be treated flows through the filter box, and the filter screen inside the box traps silt, suspended particles, algae, and other organic impurities on the surface of the filter screen, thereby achieving the purpose of water purification. However, as the filtration time increases, the trapped impurities accumulate on the surface of the filter screen, forming a dense filter cake layer, which leads to increased filtration resistance and a sharp drop in flow rate. If it is not cleaned in time, it will seriously affect the filtration efficiency.
[0003] To restore filtration function, the filter screen must be cleaned regularly. Existing filtration devices use mechanical components such as scrapers or brushes near the filter screen to physically scrape or brush away impurities on the screen surface, achieving a cleaning effect. However, simple scraping and brushing are insufficient to break the adhesion between impurities and the filter screen surface, and are ineffective in cleaning already caked or tightly bound filter cake layers. Furthermore, this cleaning method only achieves in-situ removal of impurities; the scraped-off impurities remain in the liquid environment near the filter screen and are easily re-adheded to the filter screen surface under the continuous scouring and disturbance of the filtered water flow, making the cleaning effect unsustainable. Based on this, an environmentally friendly filtration device for water conservancy projects is proposed. Summary of the Invention
[0004] This invention provides an environmentally friendly filtration device and method for water conservancy projects, which solves the problem mentioned in the above-mentioned technical background that existing filtration devices physically scrape or brush off impurities on the filter screen by setting mechanical parts such as scrapers or brushes near the filter screen. The simple scraping and brushing cleaning effect is not good, and the scraped-off impurities still remain in the liquid environment near the filter screen, making it difficult to maintain the cleaning effect.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an environmentally friendly filtration device for water conservancy projects, comprising: A filter housing, wherein a filter screen is installed inside the filter housing; The suction nozzle is located below the filter screen; The drain pipe is rotatably connected to the bottom of the filter box. The upper end of the drain pipe is fixedly connected to the bottom of the suction nozzle and communicates with it. The lower end of the drain pipe passes through the bottom of the filter box and extends to the outside of the filter box. A brush tube is rotatably connected to the end of the suction nozzle facing the filter screen. The bristles of the brush tube are in contact with the lower surface of the filter screen. A transmission mechanism is provided between the rotating shaft end of the brush tube and the inner wall of the filter box. The transmission mechanism converts the revolution of the brush tube with the suction nozzle into the rotation of the brush tube. A vibration generating mechanism is provided at the end of the suction nozzle facing the filter screen. The vibration generating mechanism includes a cam fixedly mounted on the rotating shaft of the brush cylinder and an impact member that abuts against the cam. The cam drives the impact member to slide back and forth as the rotating shaft rotates, so as to impact the filter screen. A backflush pipe is positioned above the filter screen.
[0006] Preferably, the transmission mechanism includes an end face gear ring fixedly disposed on the inner wall of the filter box and a bevel gear fixedly disposed on the end of the brush cylinder shaft, wherein the end face gear ring is meshed with the bevel gear.
[0007] Preferably, the suction nozzle has symmetrical partition plates on both sides of the end facing the filter screen, and the partition plates have accommodating grooves. The rotating shaft of the brush cylinder passes through the partition plates, the cam is located in the accommodating groove, and the striking element is slidably disposed in the accommodating groove and abuts against the cam.
[0008] Preferably, a return spring is provided between the striking member and the inner wall of the receiving groove to keep the striking member in contact with the cam, and an elastic buffer head is provided at the end of the striking member facing the filter screen.
[0009] Preferably, the suction nozzle is cone-shaped, and the brush tube is disposed inside the large-diameter end of the suction nozzle.
[0010] Preferably, a drive motor is fixedly installed on one side of the bottom of the filter box, and a drive gear is fixedly connected to the output shaft of the drive motor. A driven gear is fixedly installed on the sewage pipe, and the drive gear and the driven gear are meshed together.
[0011] Preferably, a support plate is fixedly provided at the top center of the suction nozzle, a support rod is fixedly provided at the top of the support plate, the support rod passes through the filter screen upward and is fixedly connected to the backflush pipe, and the top of the filter box is provided with a liquid delivery assembly for delivering high-pressure water to the backflush pipe.
[0012] Preferably, the backflush tube has a plurality of downward-facing nozzles evenly distributed along the axial direction, and the backflush tube and the suction nozzle are arranged opposite each other in the vertical direction. When the nozzles on the backflush tube spray downward, their rinsing area corresponds to the suction area of the suction nozzle.
[0013] Preferably, the infusion assembly includes an infusion pump fixedly mounted on the top of the filter housing, the inlet pipe of the infusion pump extending into the filter housing and located above the filter screen, and the outlet pipe of the infusion pump being rotatably connected to the top of the backflushing pipe via a rotary joint and in a sealed communication.
[0014] Preferably, the lower end of the sewage pipe is rotatably connected to a sewage branch pipe via a rotary joint. The sewage branch pipe has a first outlet and a second outlet. A first control valve is provided at the first outlet, and a second control valve and a sewage pump are sequentially provided at the second outlet. The outlet of the second control valve is connected to the inlet of the sewage pump.
[0015] The beneficial effects of the agricultural irrigation water-saving device of the present invention are as follows: (1) This invention sets a rotating drain pipe and a suction nozzle below the filter screen. While the brush cylinder at the end of the suction nozzle revolves with the suction nozzle to cover the entire surface of the filter screen, the transmission mechanism converts the revolution into the high-speed rotation of the brush cylinder, which rotates and brushes the lower surface of the filter screen to remove surface impurities. The cam fixed on the rotating shaft of the brush cylinder rotates synchronously, driving the striking part to slide back and forth, applying periodic striking vibration force to the filter screen, so that stubborn impurities and particles embedded in the gaps of the filter screen are forcibly shaken off, effectively removing adhesive impurities on the filter screen. Through the negative pressure at the suction nozzle, the brushed and shaken impurities are immediately sucked in and discharged from the system through the drain pipe. This realizes the synchronous linkage of cleaning, vibration and suction, which not only improves the cleaning effect of impurities on the filter screen, but also avoids the secondary adhesion of the removed impurities near the filter screen, making the cleaning effect lasting and stable, and ensuring the long-term stable and efficient operation of the filtration device.
[0016] (2) The present invention sets a backwash pipe above the filter screen and fixes it to the suction nozzle through a support rod. The backwash pipe and the suction nozzle are set opposite each other in the vertical direction. The flushing area of the backwash pipe always corresponds vertically to the suction area of the suction nozzle. When the drain pipe drives the suction nozzle to rotate, the backwash pipe rotates synchronously with the suction nozzle. The nozzle on the backwash pipe sprays high-pressure water downward to backwash the upper surface of the filter screen. The residual impurities that are still attached to the surface of the filter screen after brushing and shaking are flushed downward. This allows the impurities flushed down to be sucked in and discharged in time by the negative pressure at the suction nozzle, forming a coordinated action of flushing from above and suction from below. This prevents the impurities that have been flushed away from the filter screen from re-attaching under the disturbance of the filtered water flow, further improving the thoroughness and durability of the cleaning. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 3 For the present invention Figure 2Enlarged schematic diagram of the structure at point B; Figure 4 This is a schematic diagram of the connection structure between the end face gear ring and the bevel gear of the present invention; Figure 5 This is a top view of the connection structure between the suction nozzle and the brush cylinder of the present invention; Figure 6 This is a schematic diagram of the overall front view of the present invention.
[0018] In the diagram: 1. Filter box; 2. Filter screen; 3. Suction nozzle; 4. Drain pipe; 5. Brush tube; 6. Cam; 7. Impacting element; 8. End face gear ring; 9. Bevel gear; 10. Divider plate; 11. Receiving groove; 12. Return spring; 13. Backflush pipe; 14. Nozzle; 15. Support plate; 16. Support rod; 17. Infusion pump; 18. Inlet pipe; 19. Outlet pipe; 20. Drain branch pipe; 21. Drain pump; 22. Driving gear; 23. Driven gear. Detailed Implementation
[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0020] like Figures 1-6 As shown, an environmentally friendly filtration device for water conservancy projects includes: The filter box 1 is equipped with a filter screen 2. A water supply pipe is fixedly installed on one side of the bottom of the filter box 1, and a drain pipe is installed on one side of the top of the filter box 1. A pressure sensor is installed at each of the water supply pipe and the drain pipe. The nozzle 3 is located below the filter screen 2. The nozzle 3 has a cone-shaped structure with its large diameter end facing upwards towards the lower surface of the filter screen 2. A small gap of 1mm to 3mm is maintained between the edge of the large diameter end of the nozzle 3 and the lower surface of the filter screen 2, so that the negative pressure formed at the nozzle 3 can effectively act on the lower surface of the filter screen 2. The drain pipe 4 is rotatably connected to the bottom of the filter box 1. The upper end of the drain pipe 4 is fixedly connected to the bottom of the suction nozzle 3 and communicates with each other. The lower end of the drain pipe 4 passes through the bottom of the filter box 1 and extends to the outside of the filter box 1. A drive motor is fixedly installed on one side of the bottom of the filter box 1. The output shaft of the drive motor is fixedly connected to the drive gear 22. A driven gear 23 is fixedly installed on the drain pipe 4. The drive gear 22 and the driven gear 23 are meshed and connected. The brush tube 5 is rotatably connected to the end of the suction nozzle 3 facing the filter screen 2. The bristles of the brush tube 5 are in contact with the lower surface of the filter screen 2. A transmission mechanism is provided between the end of the rotating shaft of the brush tube 5 and the inner wall of the filter box 1. The transmission mechanism converts the revolution of the brush tube 5 with the suction nozzle 3 into the rotation of the brush tube 5. refer to Figure 2 and Figure 3 The vibration generating mechanism is located at the end of the suction nozzle 3 facing the filter screen 2. The vibration generating mechanism includes a cam 6 fixedly mounted on the rotating shaft of the brush cylinder 5 and an impacting member 7 that abuts against the cam 6. The cam 6 drives the impacting member 7 to slide back and forth as the rotating shaft rotates, so as to impact the filter screen 2. The backwash pipe 13 is located above the filter screen 2 to backwash the filter screen 2.
[0021] refer to Figure 4 The transmission mechanism includes an end face gear ring 8 fixedly installed on the inner wall of the filter box 1 and a bevel gear 9 fixedly installed on the end of the rotating shaft of the brush cylinder 5. The end face gear ring 8 and the bevel gear 9 are meshed and connected. The central axis of the end face gear ring 8 coincides with the rotation center axis of the suction nozzle 3. The tooth surface of the end face gear ring 8 is set downward. The bevel gear 9 is fixedly installed on the end of the rotating shaft of the brush cylinder 5 that extends out of the side wall of the suction nozzle 3. The axis of the bevel gear 9 coincides with the axis of the rotating shaft of the brush cylinder 5. The tooth surface of the bevel gear 9 is upward and is opposite to and meshes with the tooth surface of the end face gear ring 8.
[0022] When the drive motor drives the active gear 22 to rotate, the active gear 22 meshes with the driven gear 23 to rotate. The driven gear 23 drives the drain pipe 4 and the suction nozzle 3 to rotate around their vertical central axis. The brush cylinder 5 inside the suction nozzle 3 also revolves around the central axis of the filter screen 2. The bevel gear 9 fixed at the end of the rotating shaft of the brush cylinder 5 maintains a meshing state with the fixed end face gear ring 8 during the revolution. Since the end face gear ring 8 is fixed, the bevel gear 9 is forced to rotate around its own horizontal axis when rolling along the circumference of the end face gear ring 8, thereby driving the rotating shaft of the brush cylinder 5 to rotate around its own axis, realizing the rotation of the brush cylinder 5. This causes the brush bristle tips to slide at high speed relative to the lower surface of the filter screen 2, thereby generating a shearing force on the impurities attached to the surface of the filter screen 2, effectively peeling them off and improving the cleaning effect of impurities.
[0023] refer to Figure 5 The nozzle 3 has symmetrical partition plates 10 on both sides of the end facing the filter screen 2. The partition plates 10 form an installation space to accommodate the brush cylinder 5. The two ends of the rotating shaft pass through the corresponding partition plates 10. The partition plates 10 have a receiving groove 11. The upper opening of the groove faces the lower surface of the filter screen 2, and the lower opening communicates with the internal space of the partition plates 10. The striking element 7 slides back and forth in the vertical direction in the receiving groove 11. Its upper end extends out of the upper opening of the receiving groove 11 and faces the lower surface of the filter screen 2. The rotating shaft of the brush cylinder 5 passes through the partition plates 10. A cam 6 is fixedly installed on the rotating shaft section inside the partition plates 10. The striking element 7 is slidably installed in the receiving groove 11 and abuts against the cam 6.
[0024] The partition plate 10 serves as a mounting support structure for the brush cylinder 5, enabling the brush cylinder 5 to be stably rotated and connected to the end of the suction nozzle 3. On the other hand, the partition plate 10 has a receiving groove 11 inside to accommodate the cam 6 and the striking element 7, integrating the mounting support and motion guidance functions into one, thus simplifying the structure of the equipment.
[0025] When the shaft of the brush cylinder 5 rotates, the cam 6 rotates synchronously with the shaft. The contour curve of the cam 6 pushes the striking element 7 to slide back and forth in the vertical direction within the receiving groove 11, thereby converting the rotational motion of the shaft into the reciprocating linear motion of the striking element 7, applying periodic striking vibration force to the filter screen 2. This is synchronized with the brushing action of the brush cylinder 5, achieving a coordinated cleaning effect of brushing and vibration at the same time.
[0026] refer to Figure 3 A return spring 12 is provided between the striking element 7 and the inner wall of the receiving groove 11. The return spring 12 is sleeved on the lower end of the striking element 7, with one end abutting against the inner wall of the receiving groove 11 and the other end abutting against the stepped surface of the striking element 7. The return spring 12 is always in a compressed state, applying a spring force towards the cam 6 to the striking element 7 to keep the striking element 7 in contact with the cam 6, eliminating the possible separation gap caused by gravity or vibration, and ensuring continuous and reliable contact between the cam 6 and the striking element 7. In addition, an elastic buffer head is provided at the end of the striking element 7 facing the filter screen 2. It is made of polyurethane, rubber or silicone, and transmits the striking force to the filter screen 2 in a flexible contact manner, avoiding direct impact of the hard end face of the striking element 7 on the filter screen 2 and causing damage to the filter screen.
[0027] refer to Figure 1 A support plate 15 is fixedly installed at the top center of the suction nozzle 3. A support rod 16 is fixedly installed at the top of the support plate 15. The support rod 16 passes through the filter screen 2 and is fixedly connected to the backwash pipe 13. The middle part of the backwash pipe 13 is fixedly connected to the top of the support rod 16. Both ends of the backwash pipe 13 are closed. The top of the filter box 1 is provided with a liquid delivery assembly for delivering high-pressure water to the backwash pipe 13. The liquid delivery assembly includes a liquid delivery pump 17 fixedly installed at the top of the filter box 1. The inlet pipe 18 of the liquid delivery pump 17 extends into the filter box 1 and is located above the filter screen 2. The outlet pipe 19 of the liquid delivery pump 17 is rotatably connected to the top of the backwash pipe 13 through a rotary joint and is sealed and connected.
[0028] The infusion pump 17 pressurizes the clean water above the filter screen 2 and sends it through the outlet pipe 19 and rotary joint into the backwash pipe 13 to backwash the filter screen 2. The backwash pipe 13 rotates synchronously with the suction nozzle 3 around the central axis of the filter screen 2 and performs a circumferential scanning motion along the upper surface of the filter screen 2. During the rotation, it sweeps across the entire upper surface of the filter screen 2 in sequence, without any dead corners, ensuring that every area of the filter screen 2 can be effectively rinsed.
[0029] refer to Figure 1 The backwash pipe 13 has multiple downward-facing nozzles 14 evenly distributed along the axial direction. The backwash pipe 13 and the suction nozzle 3 are arranged opposite each other in the vertical direction. When the nozzles 14 on the backwash pipe 13 spray downward, their rinsing area corresponds to the suction area of the suction nozzle 3. The impurities that are backwashed away from the surface of the filter screen 2 can be sucked in and discharged by the suction nozzle 3 in an instant, forming a synergistic cleaning effect of upward flushing and downward suction.
[0030] refer to Figure 1 The lower end of the sewage pipe 4 is connected to a sewage branch pipe 20 via a rotary joint. The sewage branch pipe 20 has a first outlet and a second outlet. A first control valve is provided at the first outlet, and a second control valve and a sewage pump 21 are provided at the second outlet in sequence. The outlet of the second control valve is connected to the inlet of the sewage pump 21.
[0031] By installing a first control valve and a second control valve, along with a sewage pump, at the two outlets of the sewage branch pipe 20, two independent sewage discharge channels are constructed. When the water pressure is sufficient, the control system opens the first control valve and closes the second control valve. The sewage containing impurities in the sewage pipe 4 enters the sewage branch pipe 20 under the drive of the internal water pressure of the system, and is then discharged directly to the external drainage network through the first outlet and the first control valve. The suction nozzle 3 forms a negative pressure due to the rapid flow of water in the sewage pipe 4, which sucks in and discharges the impurities cleaned from the surface of the filter screen 2. When the water pressure inside the filtration system is insufficient, the control system closes the first control valve, opens the second control valve, and starts the sewage pump 21. The sewage pump 21 actively draws in the sewage, creating a strong negative pressure at the sewage pipe 4 and the suction nozzle 3, which pressurizes the sewage containing impurities and discharges it to the external drainage network. This ensures that sufficient negative pressure can be formed at the suction nozzle 3 under different conditions, so that the cleaned impurities can be sucked in and discharged in time.
[0032] refer to Figure 6 A transparent observation window is provided on one outer wall of the filter housing 1, and the position of the transparent observation window corresponds to that of the filter screen 2 and the suction nozzle 3, so as to facilitate timely observation of the condition of the filter screen 2. A control panel is fixedly provided on one outer wall of the filter housing 1. The control panel is electrically connected to the drive motor and the sewage pump 21, which is convenient for operators.
[0033] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. An environmentally friendly filtration device for water conservancy projects, characterized in that: include: A filter housing, wherein a filter screen is installed inside the filter housing; The suction nozzle is located below the filter screen; The drain pipe is rotatably connected to the bottom of the filter box. The upper end of the drain pipe is fixedly connected to the bottom of the suction nozzle and communicates with it. The lower end of the drain pipe passes through the bottom of the filter box and extends to the outside of the filter box. A brush tube is rotatably connected to the end of the suction nozzle facing the filter screen. The bristles of the brush tube are in contact with the lower surface of the filter screen. A transmission mechanism is provided between the rotating shaft end of the brush tube and the inner wall of the filter box. The transmission mechanism converts the revolution of the brush tube with the suction nozzle into the rotation of the brush tube. A vibration generating mechanism is provided at the end of the suction nozzle facing the filter screen. The vibration generating mechanism includes a cam fixedly mounted on the rotating shaft of the brush cylinder and an impact member that abuts against the cam. The cam drives the impact member to slide back and forth as the rotating shaft rotates, so as to impact the filter screen. A backflush pipe is positioned above the filter screen.
2. The environmentally friendly filtration device for water conservancy projects according to claim 1, characterized in that: The transmission mechanism includes an end face gear ring fixedly disposed on the inner wall of the filter box and a bevel gear fixedly disposed on the end of the brush cylinder shaft, wherein the end face gear ring and the bevel gear are meshed and connected.
3. The environmentally friendly filtration device for water conservancy projects according to claim 1, characterized in that: The suction nozzle has symmetrical partition plates on both sides of the end facing the filter screen. The partition plates have accommodating grooves. The rotating shaft of the brush cylinder passes through the partition plates. The cam is located in the accommodating groove. The striking element is slidably disposed in the accommodating groove and abuts against the cam.
4. The environmentally friendly filtration device for water conservancy projects according to claim 3, characterized in that: A return spring is provided between the striking member and the inner wall of the receiving groove to keep the striking member in contact with the cam, and an elastic buffer head is provided at the end of the striking member facing the filter screen.
5. The environmentally friendly filtration device for water conservancy projects according to claim 4, characterized in that: The suction nozzle is cone-shaped, and the brush tube is located inside the large-diameter end of the suction nozzle.
6. The environmentally friendly filtration device for water conservancy projects according to claim 1, characterized in that: A drive motor is fixedly installed on one side of the bottom of the filter box. The output shaft of the drive motor is fixedly connected to a drive gear. A driven gear is fixedly installed on the sewage pipe. The drive gear and the driven gear are meshed together.
7. The environmentally friendly filtration device for water conservancy projects according to claim 1, characterized in that: A support plate is fixedly provided at the top center of the suction nozzle, and a support rod is fixedly provided at the top of the support plate. The support rod passes through the filter screen upward and is fixedly connected to the backwash pipe. The top of the filter box is provided with a liquid delivery assembly for delivering high-pressure water to the backwash pipe.
8. The environmentally friendly filtration device for water conservancy projects according to claim 7, characterized in that: The backflush tube has multiple downward-facing nozzles evenly distributed along the axial direction. The backflush tube and the suction nozzle are arranged opposite each other in the vertical direction. When the nozzles on the backflush tube spray downwards, their rinsing area corresponds to the suction area of the suction nozzle.
9. The environmentally friendly filtration device for water conservancy projects according to claim 7, characterized in that: The infusion assembly includes an infusion pump fixedly mounted on the top of the filter housing. The inlet pipe of the infusion pump extends into the filter housing and is located above the filter screen. The outlet pipe of the infusion pump is rotatably connected to the top of the backflush pipe via a rotary joint and is sealed and connected.
10. The environmentally friendly filtration device for water conservancy projects according to claim 1, characterized in that: The lower end of the sewage pipe is rotatably connected to a sewage branch pipe via a rotary joint. The sewage branch pipe has a first outlet and a second outlet. A first control valve is provided at the first outlet, and a second control valve and a sewage pump are provided at the second outlet in sequence. The outlet of the second control valve is connected to the inlet of the sewage pump.