Sand filter

Abstract

The utility model relates to filter technical field discloses a sand filter, including two jar body, two jar body between fixedly connected with connecting block, two jar body inside all are provided with filter layer, two jar body inside all are provided with agitating subassembly, two jar body outer wall all are provided with sealing assembly, the agitating subassembly includes stirring axle and stirring rod, the connecting block inside is provided with bevel gear no.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to a sand and gravel filter. Background Technology

[0002] As a core component of water treatment systems, sand and gravel filters are widely used in industrial circulating water, agricultural irrigation, and municipal water supply. They trap suspended impurities through a multi-media filtration layer of quartz sand, gravel, and other materials. The development of a sand and gravel filter focuses on solving the clogging problem caused by filter media caking. This phenomenon significantly reduces filtration efficiency and increases energy consumption, especially under conditions of high turbidity water sources.

[0003] Traditional sand and gravel filters mostly adopt a single-tank structure. During backwashing, the machine needs to be stopped and high-pressure water is injected to impact the filter layer. Some equipment is equipped with a mechanical agitator, which is an independent motor installed on the top of the tank to drive a vertical agitator shaft. The agitator disturbs the sand and gravel layer by rotating the blades. Such agitators usually require manual valves to switch the flushing water path, and the agitation power transmission relies on a spur gear or worm gear reduction mechanism. The flushing cycle is controlled by a differential pressure sensor or timer.

[0004] Traditional mechanical agitation methods require shutdown for cleaning during backwashing, which is extremely unfavorable for continuous industrial production scenarios. Shutdown means production interruption and economic losses. In addition, frequent start-ups and shutdowns accelerate equipment wear and tear and increase maintenance costs. Therefore, there is a need for a sand filter that can be cleaned without shutting down the machine to reduce downtime losses and improve production efficiency. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a sand and gravel filter, which aims to improve the economic losses and equipment wear and tear caused by downtime for cleaning.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a sand and gravel filter, comprising two tanks, each tank having an observation window fixedly connected to its upper surface, a connecting block fixedly connected between the two tanks, a filter layer provided inside each tank, an agitation assembly provided inside each tank, and a sealing assembly provided on the outer wall of each tank.

[0007] The agitation assembly includes an agitation shaft and an agitation rod. The outer wall of the agitation shaft is rotatably connected to the inner wall of the tank. The outer wall of the agitation rod is fixedly connected to one end of the agitation shaft. A bevel gear one is provided inside the connecting block, and a bevel gear two is provided inside the connecting block. The bevel gear one and the bevel gear two are meshed together. A drive assembly is provided inside the connecting block.

[0008] Furthermore, the sealing assembly includes a cleaning valve and a sealing cap. One end of the cleaning valve is fixedly connected to the outer wall of the tank, and the sealing cap is disposed at the other end of the cleaning valve. A sealing gasket is fixedly connected to the other end of the cleaning valve. A groove is formed on the outer wall of the cleaning valve, and a second groove is formed on the outer wall of the sealing cap.

[0009] Furthermore, a nut is rotatably connected to the outer wall of the cleaning valve, and a bolt is threaded inside the nut. One end of the bolt is fixedly connected to a limit ring two, and a spring two is sleeved on the outer wall of the bolt. One end of the spring two is fixedly connected to the outer wall of the cleaning valve, and the other end of the spring two is fixedly connected to the outer wall of the nut.

[0010] Furthermore, the drive assembly includes a motor, which is disposed inside the connecting block. A pulley one is fixedly connected to the output end of the motor. A pulley two is disposed inside the connecting block. The pulley one and the pulley two are connected by a transmission belt. An end-face ratchet one is fixedly connected to one side of the outer wall of the pulley two. A transmission shaft two is disposed inside the connecting block. An end-face ratchet two is fixedly connected to one end of the transmission shaft two.

[0011] Furthermore, a circular tube is sleeved on the outer wall of the second drive shaft, and two limiting rings are fixedly connected to the outer wall of the second drive shaft. The circular tube is disposed between the two limiting rings. A connecting clamp is rotatably connected to the outer wall of the circular tube, and a handle is fixedly connected to the outer wall of the connecting clamp. The outer wall of the handle is rotatably connected to the inner wall of the connecting block.

[0012] Furthermore, a ball bearing is provided inside the connecting block, and a spring is provided inside the connecting block. One end of the spring is fixedly connected to the outer wall of the ball bearing, and the other end of the spring is fixedly connected to the inner wall of the connecting block.

[0013] Furthermore, a limiting block is fixedly connected to the outer wall of the second transmission shaft, the outer wall of the second transmission shaft is slidably connected to the inner wall of the transmission column, the first transmission shaft is fixedly connected inside the transmission column, the outer wall of the first transmission shaft is fixedly connected to the limiting block, and one end of the first transmission shaft is fixedly connected to the inner wall of the first bevel gear.

[0014] Furthermore, each of the two tank bodies has an inlet valve fixedly connected to its upper surface, and an inlet pipe fixedly connected to one end of each of the two inlet valves. Each of the two tank bodies has a drain valve fixedly connected to its outer wall, and a drain pipe fixedly connected to the outer wall of each of the two drain valves. Each of the two tank bodies has an outlet valve fixedly connected to its outer wall, and an outlet pipe fixedly connected to the outer wall of each of the two outlet valves.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, during backwashing, the stirring component is driven by a single motor to drive the bevel gear, which drives the stirring shaft in one of the tanks to rotate each time. When the filter layer sand and gravel clump together, the stirring rod rotates with the shaft to break up the clumps. This design keeps the sand and gravel layer with uniform porosity, reduces the probability of clogging, extends the filtration cycle, and the dual filters can be cleaned without stopping the machine, avoiding the downtime losses of traditional manual cleaning.

[0017] 2. In this utility model, the sealing component adopts a spring pre-tightening quick-release structure. When placing or replacing the filter material, press the handle to release the locking force of the nut. The sealing cover automatically pops off the cleaning valve as the spring rebounds. The groove positioning design ensures that the sealing gasket is accurately pressed when resetting, which is convenient for repeated disassembly and assembly. Compared with traditional flange sealing, the operation time is greatly shortened, and the problem of secondary pollution caused by leakage of the drain valve is solved. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a sand and gravel filter proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the tank structure of a sand and gravel filter proposed in this utility model;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a schematic diagram of the sealing cover structure of a sand and gravel filter proposed in this utility model;

[0022] Figure 5 for Figure 4 Enlarged diagram of point B in the middle.

[0023] Legend:

[0024] 1. Tank body; 2. Observation window; 3. Cleaning valve; 4. Inlet valve; 5. Inlet pipe; 6. Drain valve; 7. Drain pipe; 8. Outlet valve; 9. Outlet pipe; 10. Connecting block; 11. Motor; 12. Belt pulley one; 13. Belt pulley two; 14. Drive belt; 15. Drive shaft one; 16. Bevel gear one; 17. Bevel gear two; 18. Agitator shaft; 19. Agitator rod; 20. End face ratchet one; 21. 21. End face ratchet 2; 22. Drive shaft 2; 23. Round tube; 24. Limiting ring 1; 25. Connecting clamp; 26. Handle; 27. Ball bearing; 28. Spring 1; 29. ​​Limiting block 1; 30. Limiting block 2; 31. Drive column; 32. Sealing cover; 33. Sealing washer; 34. Nut; 35. Bolt; 36. Limiting ring 2; 37. Spring 2; 38. Groove 1; 39. Groove 2; 40. Filter layer. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figures 1-5This utility model provides an embodiment of a sand and gravel filter, comprising two tanks 1 connected in parallel to ensure continuous filtration, avoiding the downtime and losses caused by traditional single-tank filtration. Each tank 1 has a fixed observation window 2 on its upper surface for viewing the internal condition and predicting the risk of clogging. A connecting block 10 is fixedly connected between the two tanks 1. Each tank 1 contains a filter layer 40 to filter suspended solids. Each tank 1 also contains an agitator to physically disperse agglomerated filter media during backwashing. Each tank 1 has a sealing assembly on its outer wall. The agitator assembly includes an agitator shaft 18 and an agitator rod 19. The agitator shaft 18 is rotatably connected to the inner wall of the tank 1, and the agitator rod 19 is fixedly connected to one end of the agitator shaft 18, arranged obliquely and evenly. The agitator 19 of the cloth increases the contact area with the filter material, improving the uniformity of agglomeration and crushing. A bevel gear 16 and a bevel gear 17 are installed inside the connecting block 10. The bevel gear 16 and bevel gear 17 mesh with each other. The bevel gear 16 acts as the main drive gear, converting horizontal power to vertical output. A drive assembly is installed inside the connecting block 10, controlling the operation of both tanks via a single motor 11, reducing equipment costs. The sealing assembly includes a cleaning valve 3 and a sealing cap 32. One end of the cleaning valve 3 is fixedly connected to the outer wall of the tank 1, and the sealing cap 32 is located at the other end of the cleaning valve 3. A sealing gasket 33 is fixedly connected to the other end of the cleaning valve 3. A groove 38 is formed on the outer wall of the cleaning valve 3, and a groove 39 is formed on the outer wall of the sealing cap 32. A nut 34 is rotatably connected to the wall, and a bolt 35 is threaded inside the nut 34. One end of the bolt 35 is fixedly connected to a limit ring 36, which controls the stroke of the bolt 35 and prevents it from falling off. A spring 37 is sleeved on the outer wall of the bolt 35. One end of the spring 37 is fixedly connected to the outer wall of the cleaning valve 3, and the other end is fixedly connected to the outer wall of the nut 34. The drive assembly includes a motor 11, which is located inside the connecting block 10. A pulley 12 is fixedly connected to the output end of the motor 11. A pulley 13 is located inside the connecting block 10. The pulley 12 and the pulley 13 are connected by a transmission belt 14. A ratchet 20 is fixedly connected to one side of the outer wall of the pulley 13. The ratchet 20 provides one-way drive to prevent reverse rotation. A second drive shaft 22 is installed inside the connecting block 10. One end of the second drive shaft 22 is fixedly connected to a second end-face ratchet 21. The second end-face ratchet 21 cooperates with the first end-face ratchet 20 to form a clutch mechanism. A circular tube 23 is sleeved on the outer wall of the second drive shaft 22. Two limiting rings 24 are fixedly connected to the outer wall of the second drive shaft 22. The circular tube 23 is positioned between the two limiting rings 24. A connecting clamp 25 is rotatably connected to the outer wall of the circular tube 23. A handle 26 is fixedly connected to the outer wall of the connecting clamp 25. The outer wall of the handle 26 is rotatably connected to the inner wall of the connecting block 10. A ball bearing 27 is installed inside the connecting block 10 to lock the position of the handle 26. A spring 28 is installed inside the connecting block 10. One end of the spring 28 is fixedly connected to the outer wall of the ball bearing 27, and the other end of the spring 28 is fixedly connected to the inner wall of the connecting block 10.A limiting block 29 is fixedly connected to the outer wall of drive shaft 22. Drive shaft 22 is slidably connected to the inner wall of drive column 31. Drive shaft 15 is fixedly connected inside drive column 31. A limiting block 30 is fixedly connected to the outer wall of drive shaft 15. Limiting block 30 and limiting block 29 cooperate to transmit power. One end of drive shaft 15 is fixedly connected to the inner wall of bevel gear 16. Inlet valves 4 are fixedly connected to the upper surfaces of both tanks 1. Inlet pipes 5 are fixedly connected to one end of each inlet valve 4. Drain valves 6 are fixedly connected to the outer walls of both tanks 1. Drain pipes 7 are fixedly connected to the outer walls of each drain valve 6 to discharge wastewater from backwashing. Outlet valves 8 are fixedly connected to the outer walls of both tanks 1. Outlet pipes 9 are fixedly connected to the outer walls of each outlet valve 8 to discharge filtered clean water.

[0027] Working principle: When this type of sand and gravel filter is needed, first open the inlet valve 4. The water to be filtered enters the tank 1 through the inlet pipe 5 and is filtered through the filter layer 40. The purified water is output through the outlet valve 8 and the outlet pipe 9. During the filtration process, the status of the filter layer 40 can be monitored in real time through the observation window 2. When the pressure difference of the filter layer 40 increases due to the accumulation of impurities, the motor 11 in the connecting block 10 is started, driving the pulley 12 to rotate. This drives the pulley 13 to rotate through the transmission belt 14. The operator turns the handle 26, which pushes the round tube 23 axially through the connecting clamp 25. This causes the transmission shaft 22 to drive the transmission shaft 15 in the transmission column 31 through the limit block 29 and the limit block 30. The transmission shaft 15 drives the bevel gear 16 to rotate, which meshes with the bevel gear 17 to drive the agitator shaft. 18 rotates, and the stirring rod 19 rotates accordingly to break up the clumped filter layer 40. The drain valve 6 is opened, and the clumped impurities are discharged with the sewage through the drain pipe 7. The spring 28 and the ball 27 lock the handle 26 in the open / closed state. The limit ring 24 ensures that the drive shaft 22 moves with the round tube 23. When changing the filter media, rotate the nut 34 to unlock the spring 37, so that the bolt 35 is disengaged from the groove 39. The sealing cover 32 automatically springs away from the cleaning valve 3 under the rebound force of the spring 37. After cleaning, the sealing cover 32 is reset, and the groove 39 is aligned with the groove 38 of the cleaning valve 3 and pushed in. The limit ring 36 prevents the bolt 35 from falling out. Rotate the nut 34 to tighten the sealing washer 33. The meshing mechanism of the two pairs of end face ratchet 1 20 and end face ratchet 2 21 ensures that only one tank 1 is driven for backwashing at a time, while the other tank 1 continues to filter.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sand and gravel filter, comprising two tanks (1), characterized in that: An observation window (2) is fixedly connected to the upper surface of each of the two tanks (1), a connecting block (10) is fixedly connected between the two tanks (1), a filter layer (40) is provided inside each of the two tanks (1), an agitation component is provided inside each of the two tanks (1), and a sealing component is provided on the outer wall of each of the two tanks (1). The stirring assembly includes a stirring shaft (18) and a stirring rod (19). The outer wall of the stirring shaft (18) is rotatably connected to the inner wall of the tank (1). The outer wall of the stirring rod (19) is fixedly connected to one end of the stirring shaft (18). A bevel gear one (16) is provided inside the connecting block (10). A bevel gear two (17) is provided inside the connecting block (10). The bevel gear one (16) and the bevel gear two (17) are meshed together. A drive assembly is provided inside the connecting block (10).

2. A sand filter according to claim 1, characterized in that: The sealing assembly includes a cleaning valve (3) and a sealing cap (32). One end of the cleaning valve (3) is fixedly connected to the outer wall of the tank body (1), and the sealing cap (32) is located at the other end of the cleaning valve (3). A sealing gasket (33) is fixedly connected to the other end of the cleaning valve (3). A groove (38) is provided on the outer wall of the cleaning valve (3), and a groove (39) is provided on the outer wall of the sealing cap (32).

3. A sand filter according to claim 2, characterized in that: The cleaning valve (3) is rotatably connected to a nut (34) on its outer wall. The nut (34) is internally threaded with a bolt (35). One end of the bolt (35) is fixedly connected to a limit ring (36). A spring (37) is sleeved on the outer wall of the bolt (35). One end of the spring (37) is fixedly connected to the outer wall of the cleaning valve (3), and the other end of the spring (37) is fixedly connected to the outer wall of the nut (34).

4. A sand filter according to claim 1, characterized in that: The drive assembly includes a motor (11), which is located inside the connecting block (10). A pulley (12) is fixedly connected to the output end of the motor (11). A pulley (13) is located inside the connecting block (10). The pulley (12) and the pulley (13) are connected by a transmission belt (14). A ratchet (20) is fixedly connected to one side of the outer wall of the pulley (13). A transmission shaft (22) is located inside the connecting block (10). A ratchet (21) is fixedly connected to one end of the transmission shaft (22).

5. A sand filter according to claim 4, characterized in that: The outer wall of the second transmission shaft (22) is fitted with a round tube (23). Two limiting rings (24) are fixedly connected to the outer wall of the second transmission shaft (22). The round tube (23) is set between the two limiting rings (24). A connecting clamp (25) is rotatably connected to the outer wall of the round tube (23). A handle (26) is fixedly connected to the outer wall of the connecting clamp (25). The outer wall of the handle (26) is rotatably connected to the inner wall of the connecting block (10).

6. A sand filter according to claim 5, characterized in that: The connecting block (10) is provided with a ball (27) inside, and a spring (28) is provided inside the connecting block (10). One end of the spring (28) is fixedly connected to the outer wall of the ball (27), and the other end of the spring (28) is fixedly connected to the inner wall of the connecting block (10).

7. A sand filter according to claim 6, characterized in that: The outer wall of the second transmission shaft (22) is fixedly connected to the first limiting block (29), the outer wall of the second transmission shaft (22) is slidably connected to the inner wall of the transmission column (31), the transmission column (31) is fixedly connected to the first transmission shaft (15), the outer wall of the first transmission shaft (15) is fixedly connected to the second limiting block (30), and one end of the first transmission shaft (15) is fixedly connected to the inner wall of the first bevel gear (16).

8. A sand filter according to claim 1, characterized in that: Both tanks (1) are fixedly connected to an inlet valve (4) on their upper surfaces. One end of each inlet valve (4) is fixedly connected to an inlet pipe (5). Both tanks (1) are fixedly connected to a drain valve (6) on their outer walls. Both drain valves (6) are fixedly connected to a drain pipe (7) on their outer walls. Both tanks (1) are fixedly connected to an outlet valve (8) on their outer walls. Both outlet valves (8) are fixedly connected to an outlet pipe (9) on their outer walls.

Images