Continuous self-cleaning sand filter unit

Abstract

The utility model belongs to the technical field of sand filter units, and particularly relates to a continuous self-cleaning sand filter unit which comprises a first sand filter tank and a water outlet pipe, a filler layer is mounted in the first sand filter tank, a water inlet pipe is mounted on one side of the first sand filter tank, and a water pump is connected to the side, away from the water inlet pipe, of the first sand filter tank through a pipeline. The side, away from the first sand filtering tank, of the water pump is connected with a second sand filtering tank through a pipeline, a filter screen is installed in the second sand filtering tank, and the water outlet pipe is installed on the side, away from the water pump, of the second sand filtering tank. A driving motor is mounted at the top of the first sand filtering tank, the top of the driving motor is connected with an output shaft through a coupler, the output shaft is sleeved with a transmission gear, one side of the transmission gear is in meshed connection with a half-range gear, and a rotating shaft penetrates through the middle of the half-range gear. According to the utility model, the continuous and automatic cleaning of the first sand filtering tank is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of sand filtration units, and particularly relates to a continuous self-cleaning sand filtration unit. Background Technique

[0002] The sand filtration unit usually refers to the sand filter system used in the water treatment process, mainly used to remove suspended solids, sediment, algae, and bacteria in water to improve water quality. The sand filtration unit has a wide range of applications in water treatment plants, swimming pools, and industrial water treatment.

[0003] When the existing sand filtration unit treats wastewater, a large amount of impurity sand will adhere to its inner wall. In order not to affect the subsequent wastewater treatment effect, it is necessary to clean the sand and stone impurities inside. Since the sand filtration unit is usually a tank-shaped sealed structure and a sand filtration mechanism is installed inside, it is not convenient to clean the sand remaining on the inner wall of the sand filtration unit. Summary of the Invention

[0004] The purpose of the utility model is to provide a continuous self-cleaning sand filtration unit to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A continuous self-cleaning sand filtration unit, including a first sand filtration tank and a water outlet pipe. A packing layer is installed inside the first sand filtration tank. A water inlet pipe is installed on one side of the first sand filtration tank. A water pump is connected to the first sand filtration tank through a pipeline on the side far from the water inlet pipe. The water pump is connected to a second sand filtration tank through a pipeline on the side far from the first sand filtration tank. A filter screen is installed inside the second sand filtration tank. The water outlet pipe is installed on the side of the second sand filtration tank far from the water pump.

[0006] A driving motor is installed on the top of the first sand filtration tank. The top of the driving motor is connected to an output shaft through a coupling. A transmission gear is sleeved on the outside of the output shaft. A half gear is meshed and connected to one side of the transmission gear. A rotating shaft penetrates through the middle of the half gear.

[0007] Preferably, a rotating rod is connected to one side of the rotating shaft. An arc-shaped block is arranged on one side of the rotating rod. An arc-shaped spring is installed inside the arc-shaped block.

[0008] Preferably, fixing frames are installed around the rotating shaft. The bottom of the fixing frame is connected to a spray head through a rotating shaft. A connecting rod is installed on the top of the spray head through a track.

[0009] Preferably, a connecting ring is installed on the top of the connecting rod through a circular chute. A connecting frame is installed on the top of the connecting ring. A cylinder is installed on the top of the connecting frame through a support frame.

[0010] Preferably, cover plates are installed on the tops of the first sand filtering tank and the second sand filtering tank. Fixed blocks are installed on both sides of the cover plate, and clamping rods are inserted into the middle of the fixed blocks.

[0011] Preferably, a movable spring is installed inside the clamping rod through a groove, and a clamping block penetrating through the clamping rod is connected to one side of the movable spring.

[0012] Preferably, a connecting block is sleeved at the bottom of the clamping rod, and mounting blocks are installed on the inner walls of the first sand filtering tank and the second sand filtering tank.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. When it is necessary to clean the inner wall of the first sand filtering tank, start the driving motor. Under the cooperation of the transmission gear, the half gear, the rotating block and the arc spring, the output shaft drives the fixed frame and the spray head to rotate left and right reciprocally through the rotating shaft. At the same time, drive the connecting frame and the connecting rod to move through the air cylinder, so that the spray head rotates up and down. The up and down rotation and left and right rotation of the spray head expand the flushing range of the spray head, thereby improving the cleaning effect on the inside of the first sand filtering tank.

[0015] 2. During use, squeeze the clamping block as needed, so that the clamping block contracts into the groove of the clamping rod. Then the clamping rod is no longer limited to one side of the cover plate through the clamping block. At this time, the cover plate can be removed from the top of the first sand filtering tank, and the filler layer inside the first sand filtering tank can be replaced, thereby realizing convenient and rapid replacement of the filler layer and not affecting the filtering effect of the sand and gravel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front sectional structure schematic diagram of the present utility model;

[0017] Figure 2 is the front view structure schematic diagram of the half gear of the present utility model;

[0018] Figure 3 is the front sectional structure schematic diagram of the clamping rod of the present utility model;

[0019] Figure 4 is the bottom sectional structure schematic diagram of the arc block of the present utility model;

[0020] Figure 5 is the first perspective three-dimensional structure schematic diagram of the connecting ring of the present utility model;

[0021] Figure 6 is the second perspective three-dimensional structure schematic diagram of the connecting ring of the present utility model.

[0022] In the figure: 1. First sand filter tank; 2. Packing layer; 3. Water inlet pipe; 4. Water pump; 5. Second sand filter tank; 6. Filter screen; 7. Water outlet pipe; 8. Driving motor; 9. Output shaft; 10. Transmission gear; 11. Half gear; 12. Rotating shaft; 13. Rotating rod; 14. Arc-shaped block; 15. Arc-shaped spring; 16. Fixed bracket; 17. Sprinkler head; 18. Connecting rod; 19. Connecting ring; 20. Connecting frame; 21. Cylinder; 22. Cover plate; 23. Fixed block; 24. Clamping rod; 25. Active spring; 26. Clamping block; 27. Connecting block; 28. Mounting block. Detailed implementation manner

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figure 1 , the present invention provides a technical solution: a continuous self-cleaning sand filtration unit, including a first sand filter tank 1 and a water outlet pipe 7. A packing layer 2 is installed inside the first sand filter tank 1. A water inlet pipe 3 is installed on one side of the first sand filter tank 1. The side of the first sand filter tank 1 far from the water inlet pipe 3 is connected to a water pump 4 through a pipeline. The side of the water pump 4 far from the first sand filter tank 1 is connected to a second sand filter tank 5 through a pipeline. A filter screen 6 is installed inside the second sand filter tank 5. The water outlet pipe 7 is installed on the side of the second sand filter tank 5 far from the water pump 4;

[0025] A driving motor 8 is installed on the top of the first sand filter tank 1. The top of the driving motor 8 is connected to an output shaft 9 through a coupling. A transmission gear 10 is sleeved on the outside of the output shaft 9. One side of the transmission gear 10 is meshed and connected to a half gear 11. The middle of the half gear 11 is penetrated and connected to a rotating shaft 12. One side of the rotating shaft 12 is connected to a rotating rod 13. An arc-shaped block 14 is arranged on one side of the rotating rod 13. An arc-shaped spring 15 is installed inside the arc-shaped block 14. Fixed brackets 16 are installed around the rotating shaft 12. The bottom of the fixed bracket 16 is connected to a sprinkler head 17 through a rotating shaft. The top of the sprinkler head 17 is installed with a connecting rod 18 through a track. The top of the connecting rod 18 is installed with a connecting ring 19 through a circular chute. The top of the connecting ring 19 is installed with a connecting frame 20. The top of the connecting frame 20 is installed with a cylinder 21 through a support frame. The cylinder 21 is installed on the top of the first sand filter tank 1 through a support frame.

[0026] During specific implementation, when it is necessary to clean the inner wall of the first sand filter tank 1, start the water pump 4. The water pump 4 conveys clear water to the nozzle 17 through a hose, and then sprays it out under pressure through the nozzle 17. At the same time, the drive motor 8 can be started. The top of the drive motor 8 is connected to the output shaft 9 through a coupling. At this time, the drive motor 8 will drive the output shaft 9 to rotate. A transmission gear 10 is also sleeved outside the output shaft 9, and a half gear 11 is meshed and connected to one side of the transmission gear 10;

[0027] Since the half gear 11 lacks some teeth, when the half gear 11 meshes with the transmission gear 10, at this time, when the output shaft 9 rotates, it will drive the half gear 11 to rotate through the transmission gear 10. A rotating shaft 12 is connected through the middle of the half gear 11. Therefore, the half gear 11 will rotate, driving the rotating shaft 12 to rotate. A rotating rod 13 is installed on one side of the rotating shaft 12. When the rotating shaft 12 rotates, it will drive the rotating rod 13 to slide along the chute on one side of the arc block 14, and at the same time, squeeze the arc spring 15 in the groove of the arc block 14. In addition, a fixing frame 16 is installed around the rotating shaft 12, and the bottom of the fixing frame 16 is connected to the nozzle 17 through a rotating shaft. Therefore, when the rotating shaft 12 rotates, it will drive the nozzle 17 to rotate through the fixing frame 16;

[0028] When the half gear 11 continues to rotate, the meshing between the half gear 11 and the transmission gear 10 is released. At this time, the half gear 11 no longer receives the driving force from the transmission gear 10. Therefore, the arc spring 15 will reset and drive the rotating shaft 12 to rotate in the reverse direction through the rotating rod 13, thereby driving the fixing frame 16 and the nozzle 17 to rotate in the reverse direction;

[0029] By continuously repeating the above process, the fixing frame 16 and the nozzle 17 can be continuously rotated back and forth, so that the nozzle 17 can improve the flushing effect on the inner wall of the first sand filter tank 1 and avoid cleaning dead corners;

[0030] When the spray head 17 rotates, it will drive the connecting rod 18 to rotate through the top track, causing the top of the connecting rod 18 to slide along the circular chute at the bottom of the connecting ring 19. Then, the cylinder 21 at the bottom of the support frame can be activated. The cylinder 21 drives the connecting frame 20 at the bottom to move downward, thereby pushing the connecting ring 19 downward. Since the connecting rod 18 is slidably connected to the bottom of the connecting ring 19 through the circular chute, when the connecting ring 19 moves downward, it will push the connecting rod 18 downward. The bottom of the connecting rod 18 is also slidably connected to the track at the top of the spray head 17 through a slider. When the connecting rod 18 moves downward, the bottom of the connecting rod 18 will slide along the track at the top of the spray head 17 and squeeze one end of the spray head 17 downward. Since the middle position of the spray head 17 is connected to the bottom of the fixed frame 16 through a rotating shaft, when one end of the spray head 17 moves downward, the other end will move upward, thereby adjusting the spraying angle of the spray head 17. Conversely, the cylinder 21 can be driven to drive the connecting frame 20 upward, and then the above steps can be repeated in reverse, so that one end of the spray head 17 can be rotated downward. By adjusting the spraying angle of the spray head 17, the cleaning effect on the inner wall of the first sand filter tank 1 can be improved.

[0031] See Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 and Figure 6 As can be seen, during use, the spray head 17 can be driven to rotate left and right through the cooperation of the transmission gear 10, the half gear 11, the arc spring 15 and the rotating shaft 12. At the same time, the cylinder 21, the connecting ring 19 and the connecting rod 18 are cooperated to drive the spray head 17 to rotate up and down. By adjusting the spraying position of the spray head 17, the cleaning effect on the inner wall of the first sand filter tank 1 can be improved, and at the same time, it has the function of continuous automatic cleaning.

[0032] Cover plates 22 are installed on the tops of both the first sand filter tank 1 and the second sand filter tank 5. Fixed blocks 23 are installed on both sides of the cover plate 22. A clamping rod 24 is inserted in the middle of the fixed block 23. An active spring 25 is installed in the clamping rod 24 through a groove. One side of the active spring 25 is connected to a clamping block 26 that penetrates the clamping rod 24. A connecting block 27 is sleeved at the bottom of the clamping rod 24. Mounting blocks 28 are installed on the inner walls of both the first sand filter tank 1 and the second sand filter tank 5. The connecting block 27 is installed on both sides of the first sand filter tank 1 and the second sand filter tank 5.

[0033] During specific implementation, when the filler layer 2 on the inner wall of the first sand filter tank 1 needs to be replaced, the clamping block 26 can be squeezed into the inside of the clamping rod 24. When the clamping block 26 is squeezed, it will shrink into the groove of the clamping rod 24, so as to release the limiting effect of the clamping block 26 on the clamping rod 24. Affected by gravity, the clamping rod 24 will slide downward along the through groove between the fixed block 23 and the connecting block 27, so that the clamping rod 24 is separated from the fixed block 23 on the side of the cover plate 22, and the limiting effect of the clamping rod 24 on the fixed block 23 is released. Then the cover plate 22 can be removed from the top of the first sand filter tank 1. The filler layer 2 is fixedly placed inside the first sand filter tank 1 through the mounting block 28. At this time, without the obstruction of the cover plate 22, the filler layer 2 can be quickly removed from the inside of the first sand filter tank 1;

[0034] Then, the groove at the bottom of the filler layer 2 is docked with the mounting block 28, and the filler layer 2 is installed inside the first sand filter tank 1 through the mounting block 28. Then the cover plate 22 is docked to the top of the first sand filter tank 1. At the same time, the clamping rod 24 in the middle of the connecting block 27 is pushed upward. When the clamping rod 24 moves upward, it will be squeezed by the inclined surface of the clamping block 26 on the fixed block 23, so that the clamping block 26 shrinks into the groove of the clamping rod 24 and squeezes the movable spring 25 in the groove. When the clamping block 26 on one side of the clamping rod 24 moves out of the through groove of the fixed block 23, the clamping block 26 will be reset through the movable spring 25 and thus be stuck above the fixed block 23. Through the cooperation of the clamping block 26, the fixed block 23 and the clamping rod 24, the cover plate 22 can be fixed on the top of the first sand filter tank 1, thus facilitating the quick replacement of the filler layer 2. Similarly, the filter screen 6 inside the second sand filter tank 5 can be replaced, thereby improving the sand filtration effect of the present utility model.

[0035] Refer to Figure 1 And Figure 3 As can be seen, during use, the cover plate 22 can be quickly removed from the top of the first sand filter tank 1 as needed, so that the filler layer 2 can be quickly removed from the inside of the first sand filter tank 1 and the filler layer 2 can be replaced.

[0036] To sum up: When the present utility model is in use, the wastewater to be treated is conveyed into the first sand filter tank 1 through the water inlet pipe 3. After being filtered by the filler layer 2 inside the first sand filter tank 1, most of the impurities in the wastewater can be filtered out. The main material of the filler layer 2 is activated carbon particles, which improves the sand filtration effect on the wastewater. The filtered wastewater will be conveyed into the second sand filter tank 5 through the water pump 4 and the pipeline, and then secondary filtration is carried out through the filter screen 6 inside the second sand filter tank 5. After the secondary filtration is completed, the valve on one side of the water outlet pipe 7 can be opened to discharge the filtered water from the second sand filter tank 5. This is the usage feature of the continuous self-cleaning sand filtration unit. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0037] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A continuous self-cleaning sand filter unit, comprising a first sand filter tank (1) and a water outlet pipe (7), characterized in that: A packing layer (2) is installed inside the first sand filter tank (1); a water inlet pipe (3) is installed on one side of the first sand filter tank (1); a side of the first sand filter tank (1) away from the water inlet pipe (3) is connected to a water pump (4) via a pipeline; a side of the water pump (4) away from the first sand filter tank (1) is connected to a second sand filter tank (5) via a pipeline; a filter screen (6) is installed inside the second sand filter tank (5); and the water outlet pipe (7) is installed on a side of the second sand filter tank (5) away from the water pump (4); A driving motor (8) is installed on the top of the first sand filter tank (1); the top of the driving motor (8) is connected to an output shaft (9) via a coupling; a transmission gear (10) is sleeved on the outer side of the output shaft (9); a half-width gear (11) is meshedly connected to one side of the transmission gear (10); and a rotating shaft (12) is connected through the middle of the half-width gear (11).

2. A continuous self-cleaning sand filter unit according to claim 1, characterized in that: One side of the rotating shaft (12) is connected to a rotating rod (13), one side of the rotating rod (13) is provided with an arc block (14), and an arc spring (15) is installed inside the arc block (14).

3. A continuous self-cleaning sand filter unit according to claim 2, characterized in that: A fixing frame (16) is installed around the rotating shaft (12), the bottom of the fixing frame (16) is connected to a spray head (17) via a rotating shaft, and a connecting rod (18) is installed on the top of the spray head (17) via a track.

4. A continuous self-cleaning sand filter unit according to claim 3, characterized in that: A connecting ring (19) is installed on the top of the connecting rod (18) via a circular slide groove, a connecting frame (20) is installed on the top of the connecting ring (19), and a cylinder (21) is installed on the top of the connecting frame (20) via a supporting frame.

5. The continuous self-cleaning sand filter unit according to claim 1, characterized in that: The tops of the first sand filter tank (1) and the second sand filter tank (5) are both installed with cover plates (22), both sides of the cover plates (22) are installed with fixing blocks (23), and the middle of the fixing blocks (23) is plugged with a clamping rod (24).

6. A continuous self-cleaning sand filter unit according to claim 5, characterized in that: A movable spring (25) is installed inside the clamping rod (24) through a groove, and one side of the movable spring (25) is connected to a clamping block (26) that passes through the clamping rod (24).

7. A continuous self-cleaning sand filter unit according to claim 6, characterized in that: A connecting block (27) is sleeved on the bottom of the clamping rod (24), and mounting blocks (28) are installed on the inner walls of the first sand filter tank (1) and the second sand filter tank (5).

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