Rotary brush type backwashing filter

Abstract

The utility model discloses a rotary brush type backwash filter, which relates to the technical field of backwash filters, and comprises a shell, a top cover is arranged at the upper end of the shell, a variable frequency motor is arranged at the upper end of the top cover, a filter main body is arranged in the shell, and the filter main body is arranged in the shell. The filtering main body comprises a cleaning assembly and a plurality of filtering bags, the plurality of filtering bags surround the exterior of the cleaning assembly, a top plate is arranged at the upper ends of the filtering bags, a bottom plate is arranged at the lower ends of the filtering bags, and a flow dividing pipe is arranged at the lower end of the bottom plate; by means of the scheme, the problems that an existing backwashing filter conducts backwashing operation by means of water flow direction change, stubborn impurities are not prone to being washed, retention is prone to being caused, and the backwashing effect is poor are solved.

Description

Technical Field

[0001] This utility model relates to the field of backwash filter technology, specifically a rotating brush type backwash filter. Background Technology

[0002] A backwash filter is a device used to filter and wash impurities and particles in water. It intercepts impurities and particles in the water through a filter screen, removes suspended solids, reduces turbidity, and thus purifies the water quality.

[0003] For example, Chinese patent CN201042644Y (Automatic Backwash Filter) includes a filter housing consisting of an upper flange, a lower flange, a connected upper end cap, a tank body, and a lower end cap, with an inlet, an outlet, and a drain outlet. Its key feature is that a motor and a reducer are mounted on the top of the upper end cap, connected to a central shaft. The upper end of the central shaft is fixed with a flushing water inlet pipe and an upper end cap, communicating with a high-pressure flushing water inlet. The lower end is fixed with a flushing water outlet pipe and a lower end cap, communicating with a flushing water drain outlet. Filter components arranged circumferentially are installed between the upper and lower partitions at both ends of the tank body. These filter components consist of a coarse filter screen, filter media, a precision filter screen, and a cylindrical outer shell. The backwash filter provided by this invention can operate continuously and automatically flush the filter components as needed.

[0004] However, existing backwash filters rely on changing the direction of water flow to perform backwashing, which is not easy to flush away stubborn debris and easily causes it to remain, resulting in poor backwashing effect. Therefore, it does not meet the current needs. To address this, we propose a rotary brush backwash filter. Utility Model Content

[0005] The purpose of this utility model is to provide a rotary brush backwash filter to solve the problem mentioned in the background art that the existing backwash filters rely on the change of water flow direction to perform backwashing operation, which is not easy to wash away stubborn debris, easily causes residue, and results in poor backwashing effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rotary brush type backwash filter, comprising: a housing, a top cover at the upper end of the housing, a variable frequency motor at the upper end of the top cover, a filter body inside the housing, the filter body including a cleaning component and filter bags, and multiple filter bags are provided, with the multiple filter bags surrounding the outside of the cleaning component.

[0007] Preferably, the filter bag has a top plate at its upper end and a bottom plate at its lower end. The bottom plate has a diversion pipe at its lower end, and the internal channel of the diversion pipe is interconnected with the internal channel of the filter bag. Multiple diversion pipes are provided.

[0008] Preferably, one end of the diverter is provided with a connecting pipe, and the internal channels of the multiple diverters are interconnected with the internal channels of the connecting pipe. One side surface of the housing is provided with a liquid inlet, which is connected to the connecting pipe, and the other side surface of the housing is provided with a liquid outlet.

[0009] Preferably, the cleaning component includes a rotating shaft, and the output end of the variable frequency motor drives the rotating shaft to rotate. A connecting seat is provided on the outside of the rotating shaft, and a connecting arm is welded to the outer wall of the connecting seat.

[0010] Preferably, the cleaning assembly further includes a brush plate, the outer surface of which is provided with brushes, and fixing plates are welded to both sides of one end of the connecting arm, and the fixing plates are fixed to the brush plate by external screws.

[0011] Preferably, a drain pipe is provided at the center of the lower surface of the housing, and support legs are welded to the lower surface of the housing on all four sides.

[0012] Preferably, the top outer wall of the housing and the bottom outer wall of the top cover are both provided with fixing flanges, and the top cover and the housing are fixed by external bolts through the fixing flanges.

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

[0014] (1) This utility model sets a cleaning component in the middle of multiple enclosing rings. The cleaning component mainly consists of a brush plate with brushes and a rotating shaft with connecting arms. During backwashing, the output end of the variable frequency motor drives the rotating shaft to rotate, thereby driving the connecting arm to rotate. Since the connecting arm is fixed to the brush plate by the screws on the fixed plate, the brush plate rotates and the brushes on the outer surface of the brush plate clean the filter bag. When in contact, the filter bag vibrates due to the collision force, thereby initially cleaning the debris on the surface of the filter bag and reducing the degree of debris adhesion. In this way, it is not easy for debris to adhere during subsequent water rinsing, improving the cleanliness and rinsing efficiency, reducing water consumption, and solving the problem that backwashing the filter relies on changing the direction of water flow, which is not easy to rinse stubborn debris and easily causes residue, resulting in poor backwashing effect.

[0015] (2) By fitting the brush plate over the outside of multiple connecting arms and fixing the connecting arms to the brush plate with external screws on the fixing plate, the brush plate can be easily disassembled and replaced without replacing the entire cleaning assembly, thus reducing replacement costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2This is a schematic diagram of the internal structure of the shell of this utility model;

[0018] Figure 3 This is a schematic diagram of the filter body structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the cleaning component structure of this utility model;

[0020] In the diagram: 1. Shell; 2. Top cover; 3. Variable frequency motor; 4. Fixed flange; 5. Liquid inlet; 6. Liquid outlet; 7. Drain pipe; 8. Support leg; 9. Filter body; 10. Cleaning assembly; 11. Top plate; 12. Bottom plate; 13. Filter bag; 14. Connecting pipe; 15. Diverter pipe; 16. Rotating shaft; 17. Connecting seat; 18. Connecting arm; 19. Fixed plate; 20. Brush plate; 21. Brush. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figure 1-4 This utility model provides an embodiment of a rotary brush-type backwash filter, comprising: a housing 1, a top cover 2 at the upper end of the housing 1, a variable frequency motor 3 at the upper end of the top cover 2, a drain pipe 7 at the center of the lower surface of the housing 1, support legs 8 welded to the lower surface of the housing 1 on all four sides, a filter body 9 inside the housing 1, the filter body 9 including a cleaning component 10 and filter bags 13, and multiple filter bags 13 are provided, which surround the cleaning component 10. A top plate 11 is provided at the upper end of the filter bags 13, a bottom plate 12 is provided at the lower end of the filter bags 13, a diversion pipe 15 is provided at the lower end of the bottom plate 12, and the internal channel of the diversion pipe 15 is interconnected with the internal channel of the filter bags 13. Multiple diversion pipes 15 are provided, and a connecting pipe is provided at one end of each diversion pipe 15. 14, and the internal channels of multiple diversion pipes 15 are all interconnected with the internal channels of the connecting pipe 14. One side surface of the housing 1 is provided with an inlet 5, and the inlet 5 is connected to the connecting pipe 14. The other side surface of the housing 1 is provided with an outlet 6. The cleaning assembly 10 includes a rotating shaft 16, and the output end of the variable frequency motor 3 drives the rotating shaft 16 to rotate. A connecting seat 17 is provided on the outside of the rotating shaft 16, and a connecting arm 18 is welded to the outer wall of the connecting seat 17. The cleaning assembly 10 also includes a brush plate 20, and a brush 21 is provided on the outer surface of the brush plate 20. Water enters the connecting pipe 14 from the inlet 5 and is diverted through the diversion pipes 15. The internal channels of the diversion pipes 15 are interconnected with the internal channels of the filter bag 13. Each diversion pipe 15 corresponds to a filter bag 13. After being filtered by the filter bag 13, the water is discharged from the outlet 6 to achieve filtration.

[0023] During backwashing, the output of the variable frequency motor 3 drives the rotating shaft 16 to rotate, which in turn drives the connecting arm 18 to rotate. Since the connecting arm 18 is fixed to the brush plate 20 by the external screws of the fixing plate 19, the brush plate 20 rotates. The brushes 21 on the outer surface of the brush plate 20 clean the filter bag 13. When in contact, the filter bag 13 vibrates due to the collision force, thus initially cleaning the debris on the surface of the filter bag 13. Then, the backwashing operation is performed by changing the existing water flow direction to clean the filter. The lower surface of the connecting pipe 14 has a discharge opening for sewage discharge. The sewage can be discharged from the sewage pipe 7 by controlling the switch of the externally installed valve.

[0024] Please see Figure 4 Both sides of one end of the connecting arm 18 are welded with fixing plates 19, and the fixing plates 19 are fixed to the brush plate 20 by external screws, which facilitates the installation and removal of the brush plate 20.

[0025] Please see Figure 1 , 2 The top outer wall of the housing 1 and the bottom outer wall of the top cover 2 are both provided with fixing flanges 4, and the top cover 2 and the housing 1 are fixed by external bolts through the fixing flanges 4, which facilitates the installation and disassembly of the top cover 2 and the housing 1, thereby facilitating the replacement of the filter body 9.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rotary brush backwash filter comprising a housing (1), characterised in that: The upper end of the shell (1) is provided with a top cover (2), the upper end of the top cover (2) is provided with a variable frequency motor (3), the inside of the shell (1) is provided with a filter body (9), the filter body (9) comprises a cleaning assembly (10) and a filter bag (13), and the filter bag (13) is provided with a plurality of, and the plurality of filter bags (13) are surrounded outside the cleaning assembly (10).

2. A rotary brush backwash filter according to claim 1 wherein: The upper end of the filter bag (13) is provided with a top plate (11), the lower end of the filter bag (13) is provided with a bottom plate (12), the lower end of the bottom plate (12) is provided with a shunt pipe (15), the inside channel of the shunt pipe (15) is communicated with the inside channel of the filter bag (13), and the shunt pipe (15) is provided with a plurality of.

3. A rotary brush backwash filter according to claim 2 wherein: One end of the shunt pipe (15) is provided with a connecting pipe (14), the inside channels of the plurality of shunt pipes (15) are communicated with the inside channel of the connecting pipe (14), one side surface of the shell (1) is provided with a liquid inlet (5), and the liquid inlet (5) is communicated with the connecting pipe (14), the other side surface of the shell (1) is provided with a liquid outlet (6).

4. A rotary brush backwash filter according to claim 1 wherein: The cleaning assembly (10) comprises a rotating shaft (16), and the output end of the variable frequency motor (3) drives the rotating shaft (16) to rotate, the outside of the rotating shaft (16) is provided with a connecting seat (17), and the outer wall of the connecting seat (17) is welded with a connecting arm (18).

5. A rotary brush backwash filter according to claim 4 wherein: The cleaning assembly (10) further comprises a brush plate (20), the outer surface of the brush plate (20) is provided with a brush (21), the both side surfaces of one end of the connecting arm (18) are welded with a fixed plate (19), and the fixed plate (19) is fixed with the brush plate (20) through external screws.

6. A rotary brush backwash filter according to claim 1 wherein: The center of the lower surface of the shell (1) is provided with a blowdown pipe (7), and the periphery of the lower surface of the shell (1) is welded with a supporting leg (8).

7. A rotary brush backwash filter according to claim 1 wherein: The outer wall of the top end of the shell (1) and the bottom end of the outer wall of the top cover (2) are provided with a fixed flange (4), and the top cover (2) and the shell (1) are fixed through external bolts through the fixed flange (4).

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