Large-flow anti-blocking water taking filter

Abstract

The invention discloses a high-flow anti-blocking water taking filter which comprises collectors fixed on two sides of a water conveying pipeline and a filter positioned between the two collectors, the filter comprises a frame, the edge of the frame is in contact with the collectors on the two sides and the top of the water conveying pipeline through sealing gaskets, a filter screen is installed in the frame, an adjusting plate is installed on the water outlet side of the filter screen, the bottoms of the collectors are connected with a blow-off pipe, and a valve is installed on the blow-off pipe. The defects in the prior art can be overcome, and the shutdown cleaning frequency of the filter is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water conservancy equipment, in particular to a large-flow anti-clogging water intake filter. BACKGROUND

[0002] In large-flow water intake pipes such as agricultural irrigation and urban water supply, a filter is usually installed to preliminarily filter large-volume impurities in natural water bodies. Due to the large flow of water intake, the filter is prone to clogging by impurities during continuous use. In the prior art, the filter needs to be periodically closed for disassembly and cleaning by disassembling the filter flange, which is time-consuming and laborious. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a large-flow anti-clogging water intake filter that can solve the shortcomings of the prior art and reduce the frequency of filter shutdown for cleaning.

[0004] To solve the above technical problems, the technical solution adopted by the present application is as follows.

[0005] A large-flow anti-clogging water intake filter includes collectors fixed on both sides of a water delivery pipeline and a filter located between the two collectors; the filter includes a frame, the edges of the frame are in contact with the collectors on both sides and the top of the water delivery pipeline through sealing pads, a filter screen is installed in the frame, an adjusting plate is installed on the water outlet side of the filter screen, a sewage pipe is connected to the bottom of the collector, and a valve is installed on the sewage pipe.

[0006] Preferably, the filter screen is V-shaped, and the top end of the filter screen faces the water inlet side.

[0007] Preferably, the adjusting plate includes a plurality of connecting rods installed on the frame, the connecting rods are connected to the frame through torsional springs at both ends, a plurality of guide vanes are fixed on the connecting rods, and the included angle between the guide vanes and the axis of the water delivery pipeline gradually decreases as the flow rate of the water body in the water delivery pipeline increases.

[0008] Preferably, the guide vanes are arc-shaped, the length of different guide vanes on the same connecting rod gradually decreases from the middle to both sides of the connecting rod, and the curvature of different guide vanes on the same connecting rod gradually increases from the middle to both sides of the connecting rod.

[0009] Preferably, the liquid-approaching surface of the guide vane is provided with a plurality of transverse partitions, and the partitions on adjacent guide vanes on the same connecting rod are staggered.

[0010] Preferably, a support frame is provided in the collector, a plurality of annular elastic metal screens are fixed on the support frame, a plurality of elastic metal baffles are provided between adjacent annular elastic metal screens, and one end of each elastic metal baffle is fixedly connected to an annular elastic metal screen.

[0011] As a preference, the valve is an electrically controlled switch valve, and the blow-off pipe is provided with a quick connector.

[0012] The beneficial effects brought by the above technical solutions are that the filter can be kept running for a long time and be cleaned without stopping, effectively reducing the frequency of disassembly and cleaning of the filter when it stops, improving the equipment start-up rate, and reducing labor costs. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is a radial sectional view of one specific embodiment of the present application.

[0014] Fig. 2 is a top view of the filter screen in one specific embodiment of the present application.

[0015] Fig. 3 is a side view of the guide vane in one specific embodiment of the present application.

[0016] In the figure: 1, water delivery pipeline; 2, collector; 3, filter; 4, frame; 5, sealing gasket; 6, filter screen; 7, adjusting plate; 8, blow-off pipe; 9, valve; 10, connecting rod; 11, guide vane; 12, spacer; 13, extension piece; 14, reinforcing rib; 15, support frame; 16, annular elastic metal screen; 17, elastic metal baffle; 18, quick connector; 19, torsional spring. DETAILED DESCRIPTION

[0017] With reference to Figs. 1-3 , one specific embodiment of the present application includes collectors 2 fixed on both sides of the water delivery pipeline 1 and a filter 3 located between the two collectors 2; the filter 3 includes a frame 4, the edges of the frame 4 are in contact with the collectors 2 on both sides and the top of the water delivery pipeline 1 through sealing gaskets 5, and the frame 4 is installed with a filter screen 6, which is V-shaped, with the top end facing the water inlet side. An adjusting plate 7 is installed on the water outlet side of the filter screen 6, and the bottom of the collector 2 is connected with a blow-off pipe 8, which is installed with a valve 9 (electrically controlled switch valve), and the blow-off pipe is installed with a quick connector 18.

[0018] The filter 3 of the present application is rectangular and is installed in a plug-in manner (fixed by fixing bolts, not shown in the figure), which is different from the traditional flange installation. The plug-in installation does not require complex alignment operation, and the number of fixing bolts used is significantly less than that of the flange installation method. The collector 2 is two metal chambers prefabricated in the water delivery pipeline 1, which is open on the water inlet side and closed on the water outlet side and in contact with the frame 4, and is used to collect the impurity particles intercepted by the filter screen 6.

[0019] The adjusting plate 7 comprises several connecting rods 10 mounted on the frame 4, the two ends of the connecting rod 10 are connected with the frame 4 through torsion springs 19, and several guide vanes 11 are fixed on the connecting rod 10. With the increase of the water flow rate in the water conveying pipeline 1, the angle between the guide vane 11 and the axis of the water conveying pipeline 1 gradually decreases. The guide vane 11 is arc-shaped, the guide vane 11 protrudes towards the water outlet side, and the lengths of different guide vanes 11 on the same connecting rod 10 gradually decrease from the middle of the connecting rod 10 to both sides.

[0020] In the normal water taking and conveying process, the guide vanes 11 are deflected to the water outlet side under the push of the large flow water flow, the water flow passage area is increased, and the normal water taking speed is not affected. When the automatic cleaning period is set according to the water quality, after the cleaning period is reached, the electric control on-off valve is opened, and part of the water is discharged from the blow-off pipe 8, so that the impurities in the collector 2 are cleaned and removed. Due to the opening of the blow-off pipe 8, the flow through the filter screen 6 is reduced, the guide vanes 11 are rotated under the drive of the torsion springs 19, the angle between the guide vanes 11 and the axis of the water conveying pipeline 1 is increased, and the water flow is obviously turbulent at the position of the filter screen 6 under the blockage of the guide vanes 11, so that the impurity particles on the surface of the filter screen 6 are removed. Of course, in order to improve the cleaning efficiency, the total flow of the water conveying pipeline 1 can be appropriately reduced. After cleaning, the electric control on-off valve is closed, and the whole process does not need manual on-site operation, which saves time and effort and has little effect on the normal water taking operation.

[0021] According to the water quality, when the equipment reaches the shutdown maintenance period, the upstream valve on the water conveying pipeline 1 is closed, the water taking is stopped, the old filter 3 is removed, then the water supply pipe is inserted on the quick connector 18, the collector 2 is back-flushed, and the back-flushed dirt is discharged from the installation position of the filter 3. After back-flushing, the new filter 3 is installed, the water supply pipe is removed, and the water taking can be restored.

[0022] The curvature of different guide vanes 11 on the same connecting rod 10 gradually increases from the middle of the connecting rod 10 to both sides. The liquid-approaching surface of the guide vane 11 is provided with several transverse partitions 12, and the partitions on adjacent guide vanes 11 on the same connecting rod 10 are staggered. The guide vane 11 with a larger curvature can generate relatively stronger turbulent flow. The relatively low pressure generated by the relatively strong turbulent flow on both sides guides the water flow to flow from the middle to both sides, so that the filter screen 6 surface is more effectively cleaned. The transverse partitions 12 can improve the transverse flow trend of the water flow, and the water flow encounters the staggered partitions 12 during transverse flow, which produces secondary disturbance, thereby strengthening the turbulent flow state of the entire filter screen 6 surface.

[0023] The edge of the guide vane 11 is fixed with an extension piece 13 which is arranged obliquely towards the water outlet side, the width of the extension piece 13 is greater than the width of the guide vane 11, and the included angle between the extension piece 13 and the guide vane 11 is less than 90°. The adjacent extension pieces 13 are connected through the reinforcing ribs 14. The extension piece 13 can weaken the turbulence of the water flow through the guide vane 11, thereby reducing the back pressure of the filter 3. The different guide vanes 11 are connected through the reinforcing ribs 14, so that the different guide vanes 11 can rotate synchronously, and the turbulence generated by the guide vanes 11 which are far away from the filter screen 6 due to the angle deviation between the guide vanes 11 can be weakened by the water passage on both sides of the adjacent guide vanes 11 which are close to the filter screen 6.

[0024] The collector 2 is provided with a support frame 15, and a plurality of annular elastic metal screens 16 are fixed on the support frame 15. A plurality of elastic metal baffles 17 are arranged between adjacent annular elastic metal screens 16, and one end of each elastic metal baffle 17 is fixedly connected with an annular elastic metal screen 16. When the blowdown pipe 8 is closed, the annular elastic metal screens 16 are used to collect impurity particles. When the water flow flows out from the collector 2 through the blowdown pipe 8, the annular elastic metal screens 16 are elastically deformed downward under the impact of the water flow. Since the impact force and the supporting force of the elastic metal baffles 17 are not uniformly distributed at different positions of the annular elastic metal screens 16, the annular elastic metal screens 16 are in a dynamic small-amplitude vibration state, so that the impurity particles collected on the annular elastic metal screens 16 can be quickly removed.

[0025] The present application has the advantages of simple structure, high practicability, and wide application in various large-flow water intake pipelines, and effectively reduces the maintenance frequency of the filter.

[0026] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0027] The basic principles and main features of the present application and the advantages of the present application have been shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-flow-rate, anti-clogging water filter, characterized in that: It includes collectors fixed on both sides of the water supply pipeline and a filter located between the two collectors; the filter includes a frame, the edge of which contacts the collectors on both sides and the top of the water supply pipeline through a sealing gasket, a filter screen is installed inside the frame, an adjustment plate is installed on the outlet side of the filter screen, a drain pipe is connected to the bottom of the collector, and a valve is installed on the drain pipe.

2. The high-flow-rate anti-clogging water filter according to claim 1, characterized in that: The filter screen is V-shaped, with the top of the filter screen facing the water inlet side.

3. The high-flow-rate anti-clogging water filter according to claim 2, characterized in that: The regulating plate includes several connecting rods mounted on the frame. The two ends of the connecting rods are connected to the frame through torsion springs. Several guide vanes are fixed on the connecting rods. As the water flow velocity in the water pipeline increases, the angle between the guide vanes and the axis of the water pipeline gradually decreases.

4. The high-flow-rate anti-clogging water filter according to claim 3, characterized in that: The guide vanes are arc-shaped. The lengths of different guide vanes on the same connecting rod gradually decrease from the middle of the connecting rod to both sides, while the curvature of different guide vanes on the same connecting rod gradually increases from the middle of the connecting rod to both sides.

5. The high-flow-rate anti-clogging water filter according to claim 4, characterized in that: The liquid-facing surface of the guide vane is provided with several transverse baffles, and the baffles on adjacent guide vanes on the same connecting rod are staggered.

6. The high-flow-rate anti-clogging water filter according to claim 1, characterized in that: The collector is equipped with a support frame, on which several layers of annular elastic metal mesh are fixed. Several elastic metal baffles are arranged between adjacent annular elastic metal meshes, and any end of the elastic metal baffle is fixedly connected to the annular elastic metal mesh.

7. The high-flow-rate anti-clogging water filter according to claim 1, characterized in that: The valve is a quick-connect plug installed on the sewage pipe.

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