A filter device with adjustable filtering accuracy

Abstract

The utility model discloses a filter device of adjustable filtering precision, including the bucket body, the upper portion of bucket body is installed with the apron, and the lateral surface of bucket body is provided with the water inlet end, and the upper portion of apron is provided with the water outlet end, and the inside installation of bucket body has the outer filter barrel, and the inside installation of outer filter barrel has the middle filter barrel, and the inside installation of middle filter barrel has the inner filter barrel, and the coaxial heart of outer filter barrel, middle filter barrel and inner filter barrel is arranged, and the periphery of outer filter barrel, middle filter barrel and inner filter barrel all are provided with the filter hole, and the drive mechanism is arranged on the apron, and the drive mechanism can drive the reverse rotation of middle filter barrel and inner filter barrel. The utility model can adjust the precision of filtering.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment technology, and more specifically, to a filtration device with adjustable filtration precision. Background Technology

[0002] Existing filtration devices (such as bag filters and basket filters) have the following drawbacks: Fixed filtration accuracy: The accuracy needs to be adjusted by replacing the filter element, which is cumbersome, costly, and cannot adapt to various working conditions; Poor backwashing effect: The filter hole structure is fixed, and impurities are easy to remain in the gaps between the holes during backwashing, resulting in incomplete cleaning. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a filtration device with adjustable filtration accuracy.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model discloses a filtration device with adjustable filtration precision, including a barrel body, a cover plate installed on the upper part of the barrel body, a water inlet end provided on the side of the barrel body, a water outlet end provided on the upper part of the cover plate, an outer filter barrel fixedly installed inside the barrel body, a middle filter barrel installed inside the outer filter barrel, and an inner filter barrel installed inside the middle filter barrel. The outer filter barrel, middle filter barrel, and inner filter barrel are coaxially arranged, and filter holes are opened on the outer periphery of the outer filter barrel, middle filter barrel, and inner filter barrel. A driving mechanism is provided on the cover plate, which can drive the middle filter barrel and the inner filter barrel to rotate in opposite directions.

[0006] Furthermore, gaps are left between the inner wall of the outer filter barrel and the outer wall of the middle filter barrel, and between the inner wall of the middle filter barrel and the outer wall of the inner filter barrel.

[0007] Furthermore, the drive mechanism includes a power unit, a gear set, an inner shaft, and a hollow shaft. The power unit drives the inner shaft and the hollow shaft to rotate in opposite directions through the gear set. The inner shaft is rotatably disposed inside the hollow shaft. The lower end of the inner shaft is connected to the bottom of the middle filter barrel, and the lower end of the hollow shaft is connected to the bottom of the inner filter barrel.

[0008] Furthermore, the gear set includes a drive bevel gear, a drive shaft is connected to the power unit, the end of the drive shaft is connected to the drive bevel gear, a driven bevel gear one is keyed on the inner shaft, a driven bevel gear two is keyed on the hollow shaft, and the drive bevel gear is located between the driven bevel gear one and the driven bevel gear two and meshes with the driven bevel gear one and the driven bevel gear two respectively.

[0009] Furthermore, a fixed base is installed on the cover plate, a bearing seat is installed on the fixed base, the drive shaft is rotatably mounted on the bearing seat, and a bearing is provided between the bearing seat and the drive shaft.

[0010] Furthermore, the upper and lower parts of bearing housing one are connected to brackets, and the other ends of the two brackets are respectively connected to bearing housing two and bearing housing three. The upper end of the inner shaft is rotatably set in bearing housing two.

[0011] Furthermore, a bearing 2 is provided between the bearing housing 2 and the inner shaft, and a bearing cover 2 is installed on the upper part of the bearing housing 2.

[0012] Furthermore, a bearing three is provided between the bearing housing three and the hollow shaft, and a bearing cap three is provided on the upper part of the bearing housing three.

[0013] Furthermore, a backwash pipe is connected to the upper part of the cover plate, and a control valve is installed on the backwash pipe. A drain pipe is connected to the bottom of the tank, and a control valve is installed on the drain pipe.

[0014] The beneficial effects of this utility model are: the middle filter barrel and the inner filter barrel rotate in opposite directions inside the outer filter barrel, changing the overlapping area of ​​the filter holes on the three barrels, thereby adjusting the filtration accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a filter device with adjustable filtration accuracy in this embodiment;

[0016] Figure 2 This is a cross-sectional view of the filter device with adjustable filtration accuracy in this embodiment.

[0017] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0018] Reference numerals: 1. Tank body; 2. Inlet; 3. Cover plate; 4. Outlet; 5. Backwash pipe; 6. Control valve one; 7. Fixed base; 8. Power unit; 9. Bearing seat one; 10. Bracket; 11. Bearing seat two; 12. Bearing gland two; 13. Drive bevel gear; 14. Inner shaft; 15. Driven bevel gear one; 16. Driven bevel gear two; 17. Drive shaft; 18. Packing; 19. Sealing cover; 20. Support ring; 21. Outer filter barrel; 22. Mounting ring; 23. Middle filter barrel; 24. Inner filter barrel; 25. Hollow shaft; 26. Drain pipe; 27. Control valve two; 28. Bearing seat three; 29. ​​Bearing gland three; 30. Bearing three; 31. Ring groove; 32. Bearing two; 33. Bearing one; 34. Bearing gland one. Detailed Implementation

[0019] 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.

[0020] like Figures 1-3 As shown, a filtration device with adjustable filtration precision includes a barrel body 1, a cover plate 3 installed on the upper part of the barrel body 1, a water inlet end 2 provided on the side of the barrel body 1, and a water outlet end 4 provided on the upper part of the cover plate 3. An outer filter barrel 21 is fixedly installed inside the barrel body 1. Specifically, a support ring 20 is provided on the inner wall of the barrel body 1, and an installation ring 22 is connected to the upper end of the outer filter barrel 21. The installation ring 22 is located above the support ring 20, and the installation ring 22 and the support ring 20 are connected by bolts.

[0021] An outer filter housing 21 houses a middle filter housing 23, and an inner filter housing 24 is installed inside the middle filter housing 23. The outer filter housing 21, middle filter housing 23, and inner filter housing 24 are coaxially aligned to ensure coaxiality and prevent collisions during rotation. A 0.2-0.5mm gap is maintained between the inner wall of the outer filter housing 21 and the outer wall of the middle filter housing 23, and between the inner wall of the middle filter housing 23 and the outer wall of the inner filter housing 24, to prevent interference during rotation.

[0022] The outer filter barrel 21, the middle filter barrel 23, and the inner filter barrel 24 are all sealed at the bottom and open at the top. Circular filter holes of the same diameter are evenly distributed around the outer periphery of each of the three filter barrels. These filter holes are positioned correspondingly, with the connection between the water outlet 4 and the cover plate 3 located within the opening of the inner filter barrel 24.

[0023] A drive mechanism is provided on the cover plate 3. The drive mechanism can drive the middle filter barrel 23 and the inner filter barrel 24 to rotate in opposite directions. The drive mechanism includes a power unit 8, a gear set, an inner shaft 14, and a hollow shaft 25. The power unit 8 is a servo motor that can control the rotation angle. The power unit 8 drives the inner shaft 14 and the hollow shaft 25 to rotate in opposite directions through the gear set. The inner shaft 14 is rotatably mounted inside the hollow shaft 25. The lower end of the inner shaft 14 can be connected to the bottom of the middle filter barrel 23 by welding or bolting. The lower end of the hollow shaft 25 can also be connected to the bottom of the inner filter barrel 24 in the same way. The gear set includes a drive bevel gear 13, a drive shaft 17 connected to the power unit 8, the end of the drive shaft 17 is connected to the drive bevel gear 13, a driven bevel gear 15 is keyed to the inner shaft 14, a driven bevel gear 16 is keyed to the hollow shaft 25, and the drive bevel gear 13 is located between the driven bevel gear 15 and the driven bevel gear 16 and meshes with the driven bevel gear 15 and the driven bevel gear 16 respectively.

[0024] The power unit 8 drives the drive shaft 17 to control the rotation of the drive bevel gear 13. The drive bevel gear 13 then drives the meshing driven bevel gear 15 and driven bevel gear 16 to rotate, with the driven bevel gear 15 and driven bevel gear 16 rotating in opposite directions. The driven bevel gear 15 and driven bevel gear 16 then drive the inner filter barrel 24 and the middle filter barrel 23 to rotate via the inner shaft 14 and the hollow shaft 25, respectively. The overlapping area of ​​the filter holes on the inner filter barrel 24, the middle filter barrel 23, and the outer filter barrel 21 changes. When the overlapping area decreases, only smaller particles are allowed to pass through, thus improving the filtration accuracy. When the filter holes are completely overlapped, the maximum number of particles allowed to pass through is reached, resulting in the lowest filtration accuracy.

[0025] The cover plate 3 consists of two parts, left and right. A through hole is provided at the joint of the two parts for the hollow shaft 25 to pass through. A filler 18 is placed between the side wall of the through hole and the outer wall of the hollow shaft 25, serving as a seal. A sealing cap 19 is also provided on the through hole. The lower part of the sealing cap 19 extends between the outer wall of the hollow shaft 25 and the side wall of the through hole, while the upper part of the sealing cap 19 is located on the upper part of the cover plate 3, thus shielding the filler 18.

[0026] Furthermore, a fixed base 7 is installed on the cover plate 3, and a bearing housing 9 is installed on the fixed base 7. The drive shaft 17 is rotatably mounted on the bearing housing 9, and a bearing 33 is provided between the bearing housing 9 and the drive shaft 17. A bearing cover 34 is installed on one side of the bearing housing 9, which limits and seals the bearing 33.

[0027] Furthermore, the upper and lower parts of bearing housing 19 are connected to brackets 10, and the other ends of the two brackets 10 are respectively connected to bearing housing 21 and bearing housing 328. The upper end of the inner shaft 14 is rotatably mounted in bearing housing 21. Bearing 22 is provided between bearing housing 21 and inner shaft 14, and bearing cover 22 is installed on the upper part of bearing housing 21. Bearing 30 is provided between bearing housing 328 and hollow shaft 25, and bearing cover 39 is provided on the upper part of bearing housing 328. The functions of bearing cover 212 and bearing cover 329 are the same as those of bearing cover 34, both serving as limiting and sealing functions.

[0028] Furthermore, a backwash pipe 5 is connected to the upper part of the cover plate 3, and a control valve 6 is installed on the backwash pipe 5. The connection between the backwash pipe 5 and the cover plate 3 is located within the opening range of the inner filter barrel 24. A drain pipe 26 is connected to the bottom of the barrel body 1, and a control valve 27 is installed on the drain pipe 26. During normal filtration, both control valve 6 and control valve 27 are closed. Liquid enters the barrel body 1 from the inlet end 2, and after being filtered by the outer filter barrel 21, the middle filter barrel 23, and the inner filter barrel 24, it flows out through the outlet end 4. During backwashing, the connection between the inlet end 2 and the outlet end 4 and the outside is disconnected. The middle filter barrel 23 and the inner filter barrel 24 are rotated by the power unit 8, so that the filter holes on the outer filter barrel 21, the middle filter barrel 23, and the inner filter barrel 24 completely overlap. At this time, the control valve 6 opens, and the backwash liquid enters the barrel body 1 from the backwash pipe 5. Impurities in the gaps between the holes are quickly discharged into the barrel body 1 along the overlapping holes. Control valve 27 opens to discharge impurities, achieving efficient cleaning. When the filter holes are fully overlapped, the backwash fluid has minimal flow resistance, allowing for better removal of impurities.

[0029] Several annular grooves 31 are provided on the inner wall of the upper end of the hollow shaft 25 to serve as a seal between the hollow shaft 25 and the inner shaft 14.

[0030] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A filtration device with adjustable filtration precision, characterized in that, The device includes a barrel body (1), a cover plate (3) installed on the upper part of the barrel body (1), a water inlet (2) provided on the side of the barrel body (1), a water outlet (4) provided on the upper part of the cover plate (3), an outer filter barrel (21) fixedly installed inside the barrel body (1), a middle filter barrel (23) installed inside the outer filter barrel (21), and an inner filter barrel (24) installed inside the middle filter barrel (23). The outer filter barrel (21), the middle filter barrel (23), and the inner filter barrel (24) are coaxially arranged. Filter holes are opened on the outer periphery of the outer filter barrel (21), the middle filter barrel (23), and the inner filter barrel (24). A driving mechanism is provided on the cover plate (3), which can drive the middle filter barrel (23) and the inner filter barrel (24) to rotate in opposite directions.

2. The filtration device with adjustable filtration accuracy according to claim 1, characterized in that, There are gaps between the inner wall of the outer filter barrel (21) and the outer wall of the middle filter barrel (23), and between the inner wall of the middle filter barrel (23) and the outer wall of the inner filter barrel (24).

3. The filtration device with adjustable filtration accuracy according to claim 1, characterized in that, The drive mechanism includes a power unit (8), a gear set, an inner shaft (14), and a hollow shaft (25). The power unit (8) drives the inner shaft (14) and the hollow shaft (25) to rotate in opposite directions through the gear set. The inner shaft (14) is rotatably disposed inside the hollow shaft (25). The lower end of the inner shaft (14) is connected to the bottom of the middle filter barrel (23), and the lower end of the hollow shaft (25) is connected to the bottom of the inner filter barrel (24).

4. The filtration device with adjustable filtration precision according to claim 3, characterized in that, The gear set includes a drive bevel gear (13), the power unit (8) is driven by a drive shaft (17), the end of the drive shaft (17) is connected to the drive bevel gear (13), the inner shaft (14) is keyed to a driven bevel gear one (15), the hollow shaft (25) is keyed to a driven bevel gear two (16), the drive bevel gear (13) is located between the driven bevel gear one (15) and the driven bevel gear two (16) and meshes with the driven bevel gear one (15) and the driven bevel gear two (16) respectively.

5. The filtration device with adjustable filtration accuracy according to claim 4, characterized in that, A fixed base (7) is installed on the cover plate (3), a bearing seat (9) is installed on the fixed base (7), the drive shaft (17) is rotatably mounted on the bearing seat (9), and a bearing (33) is provided between the bearing seat (9) and the drive shaft (17).

6. The filtration device with adjustable filtration accuracy according to claim 5, characterized in that, The upper and lower parts of the bearing seat 1 (9) are connected to brackets (10), and the other ends of the two brackets (10) are respectively connected to bearing seat 2 (11) and bearing seat 3 (28). The upper end of the inner shaft (14) is rotatably disposed in bearing seat 2 (11).

7. The filtration device with adjustable filtration accuracy according to claim 6, characterized in that, A bearing 2 (32) is provided between the bearing housing 2 (11) and the inner shaft (14), and a bearing cover 2 (12) is installed on the upper part of the bearing housing 2 (11).

8. The filtration device with adjustable filtration accuracy according to claim 6, characterized in that, A bearing three (30) is provided between the bearing housing three (28) and the hollow shaft (25), and a bearing cover three (29) is provided on the upper part of the bearing housing three (28).

9. The filtration device with adjustable filtration accuracy according to claim 1, characterized in that, The cover plate (3) is connected to a backwash pipe (5) at the top, and a control valve (6) is installed on the backwash pipe (5). The bottom of the barrel (1) is connected to a drain pipe (26), and a control valve (27) is installed on the drain pipe (26).

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