Precision filter

Abstract

The invention relates to the technical field of sewage treatment, in particular to a precision filter which comprises a shell, a partition plate, a rotary drum, a filter screen, a power assembly, a transmission assembly, a backwashing assembly and a filter residue collecting assembly, the partition plate is fixedly connected with the shell, a water inlet bin and a clear water bin are arranged in the shell, and the rotary drum is rotationally connected with the shell through a rotary seal; the filter screen covers the outer side wall of the rotary drum, the power assembly drives the rotary drum to rotate through the transmission assembly, the backwashing assembly is arranged on the shell, the filter residue collecting assembly is fixedly connected with the shell, and the filter residue collecting assembly is arranged in the rotary drum. In this way, the technical problem that in the prior art, the effect of separating suspended solids in sewage by an existing filter is poor is solved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a precision filter. Background Art

[0002] Sewage refers to water discharged from life and production that has been polluted to a certain extent and has lost its original function. Sewage usually contains suspended matter. Suspended matter in sewage refers to solid matter that exists in a suspended state in sewage. During the treatment process, the suspended matter in sewage needs to be separated for subsequent treatment.

[0003] Filters can be used to filter and separate suspended matter in sewage, but existing filters are less effective in separating suspended matter in sewage. Summary of the invention

[0004] The purpose of the present invention is to provide a precision filter, aiming to solve the technical problem that the existing filters in the prior art have poor separation effects on suspended matter in sewage.

[0005] To achieve the above-mentioned purpose, the present invention adopts a precision filter, including a shell, a partition, a drum, a filter, a power assembly, a transmission assembly, a backwash assembly and a filter residue collection assembly, the partition is fixedly connected to the shell, a water inlet tank and a clean water tank are arranged in the shell, the drum is rotatably connected to the shell through a rotary seal, the filter screen covers the outer wall of the drum, the power assembly drives the drum to rotate through the transmission assembly, the backwash assembly is arranged on the shell, the filter residue collection assembly is fixedly connected to the shell, and the filter residue collection assembly is placed in the drum.

[0006] Wherein, the backwash assembly includes a backwash pump, a connecting pipe and a backwash nozzle, one end of the connecting pipe is connected to the clean water tank through the backwash pump, the other end of the connecting pipe is fixedly connected to the shell, and the backwash nozzle is connected to the connecting pipe.

[0007] There are multiple backwash nozzles, and all of them are arranged on the connecting pipe.

[0008] Wherein, the power assembly includes a mounting plate and a driving member, the mounting plate is fixedly connected to the housing, the driving member is mounted on the mounting plate, and the output end of the driving member drives the rotating drum to rotate through the transmission assembly.

[0009] Wherein, the driving component is a reduction motor.

[0010] Wherein, the transmission assembly includes a driving gear and a driven gear, the driving gear is fixedly connected to the output end of the driving member, the driven gear is fixedly connected to the rotating drum, and the driven gear is meshed with the driving gear.

[0011] Among them, the filter residue collection assembly includes a filter residue collection trough, multiple guide pipes and a slag discharge pipe, the slag discharge pipe is fixedly connected to the shell, one end of the multiple guide pipes is connected to the slag discharge pipe, and the other end of the multiple guide pipes is connected to the filter residue collection trough.

[0012] A precision filter of the present invention, when in use, sewage enters the water inlet bin through the water inlet of the shell, and after the water in the water inlet bin reaches a specified height, it overflows into the drum, and then the power component drives the drum to rotate through the transmission component. At this time, the clean water filtered by the filter screen on the drum flows out of the drum and is placed in the clean water bin, and is discharged through the book outlet of the shell after reaching the specified water level, and the suspended dirt is intercepted by the filter screen and rotates to the top of the drum with the filter screen, and is continuously flushed from the outside to the inside by the backwashing component. The filter residue collection component arranged in the drum collects the backwashing filter residue and discharges it by gravity. The backwashing uses filtered clean water, and the set pressure ensures that the contaminated filter screen can be completely rinsed, and the normal flux of the filter screen is always maintained. The small flow and high head design ensures that the backwashing water consumption is minimized, thereby solving the technical problem that the existing filters in the prior art have poor separation effect on suspended matter in sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the structure of the precision filter of the present invention.

[0015] Figure 2 The present invention Figure 1 AA line structural cross-section view.

[0016] Figure 3 It is a structural schematic diagram of the filter screen of the present invention.

[0017] 1-shell, 2-partition, 3-drum, 4-filter, 5-water inlet, 6-clean water tank, 7-backwash pump, 8-connecting pipe, 9-backwash nozzle, 10-mounting plate, 11-driving member, 12-driving gear, 13-driven gear, 14-filter residue collecting tank, 15-guide pipe, 16-slag discharge pipe, 17-upper baffle, 18-water inlet, 19-water outlet, 20-rotating seal. DETAILED DESCRIPTION

[0018] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0019] See also Figure 1 to Figure 3 ,in Figure 1 is a schematic structural diagram of the precision filter of the present invention, Figure 2 The present invention Figure 1 AA line structural section view, Figure 3 It is a structural schematic diagram of the filter screen of the present invention.

[0020] The present invention provides a precision filter, including a shell 1, a partition 2, a drum 3, a filter screen 4, a power assembly, a transmission assembly, a backwash assembly and a filter residue collection assembly, wherein the partition 2 is fixedly connected to the shell 1, a water inlet tank 5 and a clean water tank 6 are arranged in the shell 1, the drum 3 is rotatably connected to the shell 1 through a rotary seal 20, the filter screen 4 covers the outer side wall of the drum 3, the power assembly drives the drum 3 to rotate through the transmission assembly, the backwash assembly is arranged on the shell 1, the filter residue collection assembly is fixedly connected to the shell 1, and the filter residue collection assembly is placed in the drum 3.

[0021] With respect to this specific embodiment, during specific use, sewage enters the water inlet bin 5 through the water inlet 18 of the shell 1. After the water in the water inlet bin 5 reaches a specified height, it overflows into the drum 3. Then, the power assembly drives the drum 3 to rotate through the transmission assembly. At this time, the clean water filtered by the filter screen 4 on the drum 3 flows out of the drum 3 and is placed in the clean water bin 6. After reaching the specified water level, it is discharged through the book outlet of the shell 1. The suspended dirt is intercepted by the filter screen 4 and rotates to the top of the drum 3 with the filter screen 4. It is continuously washed from the outside to the inside by the backwashing assembly. The filter residue collection assembly arranged in the drum 3 collects the backwashing filter residue and discharges it by gravity. The backwashing uses filtered clean water. The set pressure ensures that the contaminated filter screen 4 can be completely washed clean, and the normal flux of the filter screen 4 is always maintained. The small flow and high head design ensures that the backwashing water consumption is minimized. In this way, the technical problem that the existing filters in the prior art have poor separation effect on suspended matter in sewage is solved.

[0022] The backwashing assembly includes a backwashing pump 7, a connecting pipe 8 and a backwashing nozzle 9, one end of the connecting pipe 8 is connected to the clean water tank 6 through the backwashing pump 7, the other end of the connecting pipe 8 is fixedly connected to the housing 1, and the backwashing nozzle 9 is connected to the connecting pipe 8;

[0023] There are multiple backwash nozzles 9 , and the multiple backwash nozzles 9 are all arranged on the connecting pipe 8 .

[0024] According to this specific embodiment, the backwash pump 7 pumps the clean water in the clean water tank 6 into the connecting pipe 8 , and sprays the clean water through the multiple backwash nozzles 9 to wash the filter residue on the filter screen 4 .

[0025] Secondly, the power assembly includes a mounting plate 10 and a driving member 11. The mounting plate 10 is fixedly connected to the housing 1. The driving member 11 is mounted on the mounting plate 10. The output end of the driving member 11 drives the rotating drum 3 to rotate through the transmission assembly.

[0026] The driving member 11 is a reduction motor.

[0027] According to this specific embodiment, the driving member 11 is installed on the housing 1 via the mounting plate 10 , and the driving member 11 drives the rotating drum 3 to rotate via the transmission assembly.

[0028] Meanwhile, the transmission assembly includes a driving gear 12 and a driven gear 13 . The driving gear 12 is fixedly connected to the output end of the driving member 11 , and the driven gear 13 is fixedly connected to the rotating drum 3 . The driven gear 13 meshes with the driving gear 12 .

[0029] According to this specific embodiment, the driving member 11 drives the driving gear 12 to rotate, and the driving gear 12 drives the driven gear 13 to rotate. When the driven gear 13 rotates, it drives the rotating drum 3 to rotate.

[0030] In addition, the filter residue collection assembly includes a filter residue collection tank 14, multiple guide pipes 15 and a slag discharge pipe 16, the slag discharge pipe 16 is fixedly connected to the shell 1, one end of the multiple guide pipes 15 is connected to the slag discharge pipe 16, and the other end of the multiple guide pipes 15 is connected to the filter residue collection tank 14.

[0031] According to the present specific embodiment, the filter residue washed from the filter screen 4 falls into the filter residue collecting tank 14 , and the filter residue enters the slag discharge pipe 16 through the plurality of the guide pipes 15 under the force of gravity and is discharged.

[0032] Again, the precision filter further includes an upper baffle 17 , and the upper baffle 17 is fixedly connected to the shell 1 .

[0033] According to this specific embodiment, the upper baffle 17 can shield and protect the interior of the housing 1 .

[0034] A precision filter of the present embodiment is used. During specific use, sewage enters the water inlet bin 5 through the water inlet 18 of the shell 1. After the water in the water inlet bin 5 reaches a specified height, it overflows into the drum 3. Then the power assembly drives the drum 3 to rotate through the transmission assembly. At this time, the clean water filtered by the filter screen 4 on the drum 3 flows out of the drum 3 and is placed in the clean water bin 6. After reaching the specified water level, it is discharged through the outlet of the shell 1. The suspended dirt is retained by the filter screen 4 and rotates to the top of the drum 3 with the filter screen 4. It is continuously flushed from the outside to the inside through the backwashing assembly. The filter residue collection assembly arranged in the drum 3 collects the backwashing filter residue and discharges it by gravity. The backwashing uses filtered clean water. The set pressure ensures that the contaminated filter screen 4 can be completely rinsed, and the normal flux of the filter screen 4 is always maintained. The small flow and high head design ensures that the backwashing water consumption is minimized. In this way, the technical problem that the existing filters in the prior art have poor separation effect on suspended matter in sewage is solved.

[0035] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A precision filter, characterized in that: It includes a shell, a partition, a rotating drum, a filter, a power assembly, a transmission assembly, a backwash assembly and a filter residue collection assembly, the partition is fixedly connected to the shell, a water inlet bin and a clean water bin are arranged in the shell, the rotating drum is rotatably connected to the shell through a rotary seal, the filter screen covers the outer side wall of the rotating drum, the power assembly drives the rotating drum to rotate through the transmission assembly, the backwash assembly is arranged on the shell, the filter residue collection assembly is fixedly connected to the shell, and the filter residue collection assembly is placed in the rotating drum.

2. The precision filter according to claim 1, characterized in that The backwash assembly includes a backwash pump, a connecting pipe and a backwash nozzle. One end of the connecting pipe is connected to the clean water tank through the backwash pump, the other end of the connecting pipe is fixedly connected to the shell, and the backwash nozzle is connected to the connecting pipe.

3. The precision filter according to claim 2, characterized in that: There are multiple backwash nozzles, and the multiple backwash nozzles are all arranged on the connecting pipe.

4. The precision filter according to claim 1, characterized in that The power assembly includes a mounting plate and a driving member, wherein the mounting plate is fixedly connected to the housing, the driving member is mounted on the mounting plate, and the output end of the driving member drives the rotating drum to rotate through the transmission assembly.

5. The precision filter according to claim 4, characterized in that: The driving member is a reduction motor.

6. The precision filter according to claim 4, characterized in that The transmission assembly comprises a driving gear and a driven gear, wherein the driving gear is fixedly connected to the output end of the driving member, the driven gear is fixedly connected to the rotating drum, and the driven gear is meshed with the driving gear.

7. The precision filter according to claim 1, characterized in that The filter residue collection assembly includes a filter residue collection tank, multiple guide pipes and a slag discharge pipe, the slag discharge pipe is fixedly connected to the shell, one end of the multiple guide pipes is connected to the slag discharge pipe, and the other end of the multiple guide pipes is connected to the filter residue collection tank.

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