Filter screen with automatic dredging function for sewage filtration

Abstract

The utility model relates to the field of filter screens, provides a filter screen with an automatic dredging function for sewage filtration, and aims to overcome the defect that the conventional filter screen cannot be automatically dredged, the filter screen comprises a sewage pipeline and a filter screen, the filter screen is arranged in the sewage pipeline, a cleaning brush is tightly attached to the front side of the filter screen, and a baffle is welded on the water inlet side of the sewage pipeline. A flow guide pipe penetrates through the upper side of the baffle, a rotating shaft is rotationally arranged in the sewage pipeline and located between the baffle and the filter screen, paddles are welded to the rotating shaft, a lifting mechanism for driving the cleaning brush to ascend and descend is arranged on the outer side of the sewage pipeline and comprises a lead screw, and a linkage mechanism is arranged between the rotating shaft and the lead screw. According to the utility model, the washing brush can be driven to lift in a reciprocating manner to brush impurities on the surface of the filter screen by utilizing the flushing force of sewage flowing in and a mechanism, the filter screen can be automatically cleaned and dredged, time and labor are saved, the cost is saved, the filtering work can still be carried out in the cleaning process, and the sewage filtering efficiency is prevented from being reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of filter screens, in particular to a filter screen with an automatic dredging function for sewage filtering. Background Art

[0002] The sewage filter is a device used to treat sewage. Its main function is to filter impurities and solid particles in sewage to improve the quality of water. When treating sewage, the sewage first enters the sewage filter through the water inlet pipe, and then passes through the filter medium to filter the solid particles and impurities, while the clean water flows out of the filter and enters the next step of treatment or discharge.

[0003] As sewage is continuously filtered, impurities on the filter medium will gradually increase, and the filter medium needs to be cleaned or replaced in time to ensure the filtering effect and the normal operation of the equipment. However, the existing sewage filter nets need to be cleaned or replaced manually, and do not have the function of automatic dredging and cleaning, which is time-consuming and laborious. In addition, sewage filtration cannot be performed during the cleaning and dredging process, which reduces the sewage filtration efficiency. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a filter screen with automatic dredging function for sewage filtration.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A filter screen with automatic dredging function for sewage filtration comprises a sewage pipe and a filter screen, the filter screen is vertically fixedly installed in the sewage pipe, a cleaning brush is horizontally and tightly attached to the front side of the filter screen, a baffle is vertically welded on the water inlet side of the sewage pipe, a guide pipe is horizontally penetrated and welded on the upper side of the baffle, a rotating shaft is horizontally connected and rotated between the baffle plate and the filter screen in the sewage pipe, a paddle is welded on the rotating shaft, a lifting mechanism for driving the cleaning brush to lift and lower is provided on the outside of the sewage pipe, the lifting mechanism comprises a screw rod, and a linkage mechanism is provided between the rotating shaft and the screw rod.

[0007] The sewage entering the sewage pipe is blocked by the baffle and enters the diversion pipe. The diameter of the diversion pipe is smaller, so the sewage entering the diversion pipe flows faster. The fast-flowing sewage discharged from the diversion pipe directly flushes on the paddles, driving the paddles to rotate. Multiple paddles drive the rotating shaft to rotate under the flushing of the sewage.

[0008] As a further technical solution of the utility model, a dirt collecting groove is provided at the bottom of the sewage pipe below the filter screen, a dirt collecting box is welded at the bottom of the sewage pipe below the dirt collecting groove, and a side door is hinged on one side of the dirt collecting box. Impurities brushed off the filter screen by the cleaning brush pass through the dirt collecting groove and enter the dirt collecting box for storage. When not filtering, the side door can be opened to clean out the impurities in the dirt collecting box.

[0009] As a further technical solution of the utility model, multiple blades are provided and evenly distributed along the circumference in the middle of the shaft, the guide pipe faces the upper blade, and one end of the shaft extends out of the sewage pipe. Sewage flushing on the upper blade can drive the shaft to rotate.

[0010] As a further technical solution of the utility model, an installation box is vertically welded to the outside of the sewage pipe, the screw rod is vertically rotatably connected to the installation box, the top end of the screw rod extends from the inside of the installation box, a moving block is sleeved on the screw rod, the moving block is connected to the screw rod by a thread, the other end of the moving block extends into the sewage pipe, the moving block and the installation box and the sewage pipe are all slidably connected, and the other end of the moving block is welded to one end of the cleaning brush.

[0011] By providing a lifting mechanism, the reciprocating forward and reverse rotation of the screw rod drives the moving block to reciprocate and rise and fall on the screw rod, thereby driving the cleaning brush to reciprocate and rise and fall.

[0012] As a further technical solution of the utility model, the linkage mechanism includes a large disc and a small disc. The large disc is welded to one end of the rotating shaft. A circular groove is opened on one side of the large disc. The small disc is welded to the center of the circular groove. Inner convex teeth are welded on part of the inner wall of the circular groove, and outer convex teeth are welded on part of the outer circumference of the small disc. The number of the inner convex teeth and the outer convex teeth is the same. A small gear is provided between the inner convex teeth and the outer convex teeth, and multiple inner convex teeth and multiple outer convex teeth are meshed with the small gear in sequence. A driving shaft is horizontally welded at the center of the small gear, a driving bevel gear is welded on the driving shaft, a driven bevel gear is horizontally meshed on the side of the driving bevel gear, a driven shaft is vertically welded at the center of the driven bevel gear, and a belt is connected between the driven shaft and the screw rod.

[0013] By providing a linkage mechanism, the rotating shaft drives the large disc to rotate, and the large disc drives the small disc to rotate. The inner convex teeth on the inner circumference of the large disc mesh with the small gear first, driving the small gear to rotate forward, and the small gear drives the driving shaft to rotate. The driving shaft drives the driven shaft to rotate through the driving bevel gear and the driven bevel gear. The driven shaft drives the screw rod to rotate forward through the belt. After the inner convex teeth and the small gear are meshed, the outer convex teeth on the outer circumference of the small disc mesh with the small gear again, driving the small gear to rotate in the opposite direction. Similarly, the screw rod is driven to rotate in the opposite direction. The large disc and the small disc continue to rotate, which drives the screw rod to rotate back and forth. The flushing force of the sewage inflow can be used as the driving force to drive the cleaning brush to rise and fall back and forth to brush away the impurities on the surface of the filter screen, so that the filter screen can be automatically cleaned and dredged without manual cleaning, saving time and effort, and no additional driving equipment is required, saving costs, and the filter screen can be cleaned during the sewage filtration process. Filtering work can still be carried out during the cleaning process to prevent the sewage filtration efficiency from being reduced.

[0014] As a further technical solution of the utility model, an L-shaped support plate is welded on one side of the sewage pipe, one end of the driving shaft is rotatably connected to the vertical surface of the L-shaped support plate, and the driven shaft passes through the L-shaped support plate and is rotatably connected to the L-shaped support plate. The L-shaped support plate supports the driving shaft and the driven shaft.

[0015] The beneficial effects of the utility model are as follows: the flushing force of the sewage inflow can be used as a driving force to cooperate with the mechanism to drive the cleaning brush to rise and fall back and forth to brush away impurities on the surface of the filter screen, thereby automatically cleaning and unblocking the filter screen without manual cleaning, saving time and effort, and requiring no additional driving equipment, thus saving costs. In addition, the filter screen can be cleaned while the sewage is being filtered, and filtering work can still be performed during the cleaning process, thereby preventing a reduction in the sewage filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a filter screen with automatic dredging function for sewage filtration proposed by the utility model;

[0017] Figure 2 This is a front view structural schematic diagram of a filter screen with automatic dredging function for sewage filtration proposed by the utility model;

[0018] Figure 3 A schematic diagram of the top view and cross-sectional structure of a filter screen with automatic dredging function for sewage filtration proposed by the utility model Figure 1 ;

[0019] Figure 4 A schematic diagram of the top view and cross-sectional structure of a filter screen with automatic dredging function for sewage filtration proposed by the utility model Figure 2 ;

[0020] Figure 5 This is a schematic structural diagram of a filter screen with automatic dredging function for sewage filtration proposed by the utility model after the sewage pipe is removed.

[0021] In the figure: 1. L-shaped support plate; 2. circular groove; 3. outer convex teeth; 4. small disc; 5. inner convex teeth; 6. large disc; 7. installation box; 8. sewage collection box; 9. sewage pipe; 10. belt; 11. filter screen; 12. side door; 13. baffle; 14. guide tube; 15. driven shaft; 16. driven bevel gear; 17. driving bevel gear; 18. driving shaft; 19. pinion; 20. cleaning brush; 21. paddle; 22. rotating shaft; 23. screw rod; 24. sewage collection tank; 25. moving block. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Please refer to the attached Figure 1 -Attached Figure 5 A filter screen with automatic dredging function for sewage filtration comprises a sewage pipe 9 and a filter screen 11, the filter screen 11 is vertically fixedly installed in the sewage pipe 9, a cleaning brush 20 is horizontally and closely attached to the front side of the filter screen 11, a baffle 13 is vertically welded on the water inlet side of the sewage pipe 9, a guide pipe 14 is horizontally penetrated and welded on the upper side of the baffle 13, a rotating shaft 22 is horizontally connected and rotated between the baffle 13 and the filter screen 11 in the sewage pipe 9, a paddle 21 is welded on the rotating shaft 22, a lifting mechanism for driving the cleaning brush 20 to rise and fall is provided on the outside of the sewage pipe 9, the lifting mechanism comprises a screw rod 23, and a linkage mechanism is provided between the rotating shaft 22 and the screw rod 23.

[0026] The sewage entering the sewage pipe 9 is blocked by the baffle 13 from entering the guide pipe 14. The diameter of the guide pipe 14 is smaller, so the sewage entering the guide pipe 14 flows faster. The sewage with a fast flow rate discharged from the guide pipe 14 directly flushes on the paddles 21, driving the paddles 21 to rotate. The multiple paddles 21 drive the rotating shaft 22 to rotate under the flushing of the sewage.

[0027] Please refer to the attached Figure 1 and 4 In a preferred embodiment, a dirt collecting groove 24 is provided at the bottom of the sewage pipe 9 below the filter screen 11, a dirt collecting box 8 is welded at the bottom of the sewage pipe 9 below the dirt collecting groove 24, and a side door 12 is hinged on one side of the dirt collecting box 8. Impurities brushed off the filter screen 11 by the cleaning brush 20 pass through the dirt collecting groove 24 and enter the dirt collecting box 8 for storage. When not filtering, the side door 12 can be opened to clean out the impurities in the dirt collecting box 8.

[0028] Please refer to the attached Figure 3-5 In a preferred embodiment, a plurality of blades 21 are provided and evenly distributed along the circumference in the middle of the rotating shaft 22, the guide pipe 14 faces the upper blade 21, and one end of the rotating shaft 22 extends from the sewage pipe 9. The sewage flushing on the upper blade 21 can drive the rotating shaft 22 to rotate.

[0029] Please refer to the attached Figure 1 , 4 And 5, in a preferred embodiment, a mounting box 7 is vertically welded to the outside of the sewage pipe 9, a screw rod 23 is vertically rotatably connected to the mounting box 7, the top end of the screw rod 23 extends from the inside of the mounting box 7, a moving block 25 is sleeved on the screw rod 23, and the moving block 25 is connected to the screw rod 23 by a thread.

[0030] Please refer to the attached Figure 1 , 4 In a preferred embodiment, the other end of the moving block 25 extends into the sewage pipe 9, the moving block 25 and the installation box 7 and the sewage pipe 9 are all slidably connected, and the other end of the moving block 25 is welded to one end of the cleaning brush 20. The reciprocating forward and reverse rotation of the screw rod 23 drives the moving block 25 to reciprocate and rise and fall on the screw rod 23, thereby driving the cleaning brush 20 to reciprocate and rise and fall.

[0031] Please refer to the attached Figure 1 and 2 In a preferred embodiment, the linkage mechanism includes a large disc 6 and a small disc 4. The large disc 6 is welded to one end of the rotating shaft 22. A circular groove 2 is opened on one side of the large disc 6. The small disc 4 is welded to the center of the circular groove 2. An inner convex tooth 5 is welded to a part of the inner wall of the circular groove 2. An outer convex tooth 3 is welded to a part of the outer periphery of the small disc 4.

[0032] Please refer to the attached Figure 1 and 2 In a preferred embodiment, the number of the inner convex teeth 5 and the number of the outer convex teeth 3 are the same, a pinion 19 is provided between the inner convex teeth 5 and the outer convex teeth 3, and the plurality of inner convex teeth 5 and the plurality of outer convex teeth 3 are meshed with the pinion 19 in sequence, and a driving shaft 18 is horizontally welded at the center of the pinion 19.

[0033] Please refer to the attached Figure 1 and 2 In a preferred embodiment, a driving bevel gear 17 is welded on the driving shaft 18, a driven bevel gear 16 is horizontally meshed on the side of the driving bevel gear 17, a driven shaft 15 is vertically welded at the center of the driven bevel gear 16, and a belt 10 is connected between the driven shaft 15 and the screw rod 23.

[0034] The rotating shaft 22 drives the large disc 6 to rotate, and the large disc 6 drives the small disc 4 to rotate. The inner convex teeth 5 on the inner circumference of the large disc 6 first mesh with the pinion 19, driving the pinion 19 to rotate forward. The pinion 19 drives the driving shaft 18 to rotate. The driving shaft 18 drives the driven shaft 15 to rotate through the driving bevel gear 17 and the driven bevel gear 16. The driven shaft 15 drives the screw rod 23 to rotate forward through the belt 10. After the inner convex teeth 5 and the pinion 19 are meshed, the outer convex teeth on the outer circumference of the small disc 4 mesh with the pinion 19 again, driving the pinion 19 to rotate in the opposite direction. Similarly, the screw rod 23 is driven to rotate in the same way. The rod 23 rotates in the opposite direction, and the large disc 6 and the small disc 4 rotate continuously, which drives the screw rod 23 to rotate back and forth. The flushing force of the sewage inflow can be used as a driving force to cooperate with the mechanism to drive the cleaning brush 20 to rise and fall back and forth to brush away the impurities on the surface of the filter screen 11, so that the filter screen 11 can be automatically cleaned and unblocked without manual cleaning, saving time and effort, and no additional driving equipment is required, which saves costs. In addition, the filter screen 11 can be cleaned while the sewage is being filtered, and filtering can still be performed during the cleaning process to prevent a reduction in the sewage filtration efficiency.

[0035] Please refer to the attached Figure 1 and 2 In a preferred embodiment, an L-shaped support plate 1 is welded to one side of the sewage pipe 9, one end of the driving shaft 18 is rotatably connected to the vertical surface of the L-shaped support plate 1, and the driven shaft 15 passes through the L-shaped support plate 1 and is rotatably connected to the L-shaped support plate 1. The L-shaped support plate 1 supports the driving shaft 18 and the driven shaft 15.

[0036] From the above description, it can be seen that the above-mentioned embodiment of the utility model achieves the following technical effects: the sewage entering the sewage pipe 9 is blocked by the baffle 13 from entering the guide pipe 14, and the diameter of the guide pipe 14 is smaller, so the sewage flowing into the guide pipe 14 has a faster flow rate, and the sewage with a fast flow rate discharged from the guide pipe 14 directly flushes on the paddle 21, which drives the paddle 21 to rotate, and the plurality of paddles 21 drive the rotating shaft 22 to rotate under the flushing of the sewage;

[0037] The rotating shaft 22 drives the large disc 6 to rotate, and the large disc 6 drives the small disc 4 to rotate. The inner convex teeth 5 on the inner circumference of the large disc 6 first mesh with the pinion 19, driving the pinion 19 to rotate forward, and the pinion 19 drives the driving shaft 18 to rotate. The driving shaft 18 drives the driven shaft 15 to rotate through the driving bevel gear 17 and the driven bevel gear 16. The driven shaft 15 drives the screw rod 23 to rotate forward through the belt 10. After the inner convex teeth 5 and the pinion 19 are meshed, the outer convex teeth on the outer circumference of the small disc 4 mesh with the pinion 19 again, driving the pinion 19 to rotate in the opposite direction. Similarly, the screw rod 23 is driven to rotate in the opposite direction. The large disc 6 and the small disc 4 continue to rotate, which drives the screw rod 23 to reciprocate. The reciprocating forward and reverse rotation of the screw rod 23 drives the moving block 25 to rise and fall on the screw rod 23, thereby driving the cleaning brush 20 to rise and fall back and forth.

[0038] The flushing force of the sewage flowing in can be used as a driving force to cooperate with the mechanism to drive the cleaning brush 20 to rise and fall back and forth to brush away the impurities on the surface of the filter 11, so that the filter 11 can be automatically cleaned and unblocked without manual cleaning, saving time and effort, and no additional driving equipment is required, saving costs. In addition, the filter 11 can be cleaned during the sewage filtration process, and filtering can still be performed during the cleaning process to prevent the sewage filtration efficiency from being reduced.

[0039] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0040] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A filter screen with automatic dredging function for sewage filtration, comprising a sewage pipe (9) and a filter screen (11), characterized in that: The filter screen (11) is vertically fixedly installed in the sewage pipe (9); a cleaning brush (20) is horizontally and tightly attached to the front side of the filter screen (11); a baffle (13) is vertically welded to the water inlet side of the sewage pipe (9); a guide pipe (14) is horizontally penetrated and welded to the upper side of the baffle (13); a rotating shaft (22) is horizontally rotatably connected between the baffle (13) and the filter screen (11) in the sewage pipe (9); a paddle (21) is welded to the rotating shaft (22); a lifting mechanism for driving the cleaning brush (20) to rise and fall is provided on the outside of the sewage pipe (9); the lifting mechanism comprises a screw rod (23); and a linkage mechanism is provided between the rotating shaft (22) and the screw rod (23).

2. A filter screen with automatic dredging function for sewage filtration according to claim 1, characterized in that: A sewage collecting trough (24) is provided at the bottom of the sewage pipe (9) below the filter screen (11), a sewage collecting box (8) is welded to the bottom of the sewage pipe (9) below the sewage collecting trough (24), and a side door (12) is hingedly connected to one side of the sewage collecting box (8).

3. The filter screen with automatic dredging function for sewage filtration according to claim 1 is characterized in that: A plurality of the paddles (21) are evenly distributed along the circumference in the middle of the rotating shaft (22); the flow guide pipe (14) faces the paddles (21) on the upper side; and one end of the rotating shaft (22) extends out from the sewage pipe (9).

4. The filter screen with automatic dredging function for sewage filtration according to claim 3 is characterized in that: A mounting box (7) is vertically welded to the outside of the sewage pipe (9); the screw rod (23) is vertically rotatably connected to the inside of the mounting box (7); the top end of the screw rod (23) extends out from the inside of the mounting box (7); a moving block (25) is sleeved on the screw rod (23); and the moving block (25) is connected to the screw rod (23) via a thread.

5. A filter screen with automatic dredging function for sewage filtration according to claim 4, characterized in that: The other end of the moving block (25) extends into the interior of the sewage pipe (9); the moving block (25) and the installation box (7) and the sewage pipe (9) are all slidably connected; and the other end of the moving block (25) is welded to one end of the cleaning brush (20).

6. A filter screen with automatic dredging function for sewage filtration according to claim 5, characterized in that: The linkage mechanism comprises a large disc (6) and a small disc (4), the large disc (6) being welded to one end of a rotating shaft (22), a circular groove (2) being provided on one side of the large disc (6), the small disc (4) being welded to the center of the circular groove (2), inner convex teeth (5) being welded to a portion of the inner wall of the circular groove (2), and outer convex teeth (3) being welded to a portion of the outer periphery of the small disc (4).

7. A filter screen with automatic dredging function for sewage filtration according to claim 6, characterized in that: The number of the inner convex teeth (5) and the number of the outer convex teeth (3) are the same, a pinion gear (19) is provided between the inner convex teeth (5) and the outer convex teeth (3), and the plurality of inner convex teeth (5) and the plurality of outer convex teeth (3) are meshed with the pinion gear (19) in sequence, and a driving shaft (18) is horizontally welded at the center of the pinion gear (19).

8. The filter screen with automatic dredging function for sewage filtration according to claim 7, characterized in that: A driving bevel gear (17) is welded to the driving shaft (18), a driven bevel gear (16) is horizontally meshed on the side of the driving bevel gear (17), a driven shaft (15) is vertically welded at the center of the driven bevel gear (16), and a belt (10) is connected between the driven shaft (15) and the screw rod (23).

9. A filter screen with automatic dredging function for sewage filtration according to claim 8, characterized in that: An L-shaped support plate (1) is welded to one side of the sewage pipe (9); one end of the driving shaft (18) is rotatably connected to the vertical surface of the L-shaped support plate (1); and the driven shaft (15) passes through the L-shaped support plate (1) and is rotatably connected to the L-shaped support plate (1).

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