CN110665280A - Full-immersion rotary drum micro-filter - Google Patents

Abstract

The invention relates to a fully immersed rotary drum microfilter. A backwash drain pipe is fixed inside the rotary drum screen; a piston device with a piston rod and a backwash bucket are also fixed inside the rotary drum screen. The end of the lever is rotatably connected to one end of the lever, the other end of the lever is rotatably connected to the backwash bucket, and the middle of the lever is connected to the piston drain plug set at the upper end of the backwash drain pipe; The backwash water inlet extends to the outside of the shell; when working, the drum filter is immersed in the water body; when backwashing: the backwash water inlet and the piston water inlet pipe are filled with water, and the water inlet pressure of the piston water inlet pipe drives the piston rod to lift , drive the lever to swing upward, and then open the piston drain plug, and the sewage in the backwash bucket is discharged from the backwash drain pipe. The device has the characteristics of small footprint, high utilization rate of filter screen area, low energy consumption, and the drum is not easily deformed and damaged.

Description

A fully immersed rotary drum microfilter

technical field

The invention relates to a rotary drum microfilter, in particular to a fully immersed rotary drum microfilter.

Background technique

At present, the main physical filtration equipment in the circulating aquaculture system is the drum microfilter. The filtration area of the existing drum microfilter is relatively low, generally about 30% of the drum, which results in the utilization of the filtration area of the drum microfilter. The rate is low, the volume of the whole machine is large, and it occupies a large area in the breeding system. In addition, in a general drum microfiltration machine, because only part of the drum is in the water, it will cause the drum to be eccentric when it rotates, making the drive motor power consumption large, and the drum is easily deformed and damaged.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a fully immersed rotary drum microfiltration machine, the filter area utilization rate of the filter screen can reach 100%, and the equipment volume can be greatly reduced when the design target filtration capacity is achieved, and the floor space can also be reduced. Reduce; the whole drum is immersed in water, the force is uniform, it will not cause eccentricity during rotation, the energy consumption of the driving motor is greatly reduced, and the deformation and damage of the drum can be avoided at the same time.

The beneficial effects of the present invention are:

A fully immersed rotary drum microfilter comprises a shell, a drum filter 1 is arranged in the shell, and a water outlet 9 is provided at a position above the drum filter 1 at one end of the shell, and the drum filter 1 has a A water inlet 2 that communicates with the outside; a backwash drain pipe 3 is fixed inside the drum filter 1, the upper end of the backwash drain pipe 3 is open upward, and the lower end extends outside the shell; A piston device with a piston rod 7 and a backwash bucket 8 are fixedly arranged. The piston device extends to the outside of the housing through the piston water inlet pipe 12. The end of the piston rod 7 is rotatably connected to one end of the lever 5, and the other end of the lever 5 is connected to the backwash bucket. 8. Rotationally connected, the middle part of the lever 5 is connected with the piston drain plug 4 arranged on the upper end of the backwash drain pipe 3; a group of backwash nozzles 6 are arranged above the drum screen 1, and the backwash nozzles 6 pass through the backwash water inlet 6a extends to the outside of the casing; during operation, the drum screen 1 is immersed in the water body; during backwashing: the backwash water inlet 6a and the piston water inlet pipe 12 enter water, and the water inlet pressure of the piston water inlet pipe 12 The piston rod 7 is driven to lift up, the lever 5 is driven to swing upward, and the piston drain plug 4 is opened, and the sewage in the backwash bucket 8 is discharged from the backwash drain pipe 3 .

Preferably, the backwash drainage pipe 3 is L-shaped.

Preferably, an inspection cover 13 is provided on the upper end of the casing.

Preferably, a deceleration motor cover 10 is provided on the housing, and the deceleration motor inside is coaxially connected to the driving gear 15 , the driving gear 15 and the driving gear 14 are driven by a chain, and the driving gear 14 is the same as the drum filter 1 . shaft connection.

Preferably, the backwash nozzle 6 and the water outlet 9 are located at the same height.

Preferably, the water inlet 2, the backwash drain pipe 3, the backwash water inlet 6a, and the piston water inlet pipe 12 are arranged on the same side of the casing, and the water outlet 9 is arranged on the opposite side of the casing.

Preferably, the piston device and the piston rod 7 are arranged vertically.

Preferably, the fully immersed rotary drum microfiltration machine is used in the water purification system of the factory circulating aquaculture.

The beneficial effects of the present invention are:

1) The drum filter screen of this device is immersed in water as a whole, and the utilization rate of the filtration area is high, which can reduce the volume of the whole machine, make the overall floor space small, save space, and facilitate installation and transportation.

2) The drum filter screen of this device is fully immersed in water, so that the resistance of the drum is relatively uniform when rotating, and no eccentricity is generated, so the energy consumption of the drive motor is low, and the transmission shaft will not be damaged due to eccentricity.

3) The production is simple, because the volume can be reduced, it takes up less space, and the installation and disassembly are simple and convenient for maintenance.

4) The backwashing device of this device is supplied with pressure by the backwashing pump, and does not need to be equipped with an additional starting device; it has a physical filtering effect, and the filter mesh accuracy can be replaced according to application needs.

5) Due to the obvious effect of removing physical particles of the device, the floor space in the breeding system is smaller than that of the traditional microfiltration machine, so that the breeding farm with the same area can increase the breeding water body and reduce the floor space of the water treatment.

Description of drawings

Fig. 1 is the outline schematic diagram of the full-immersion rotary drum microfiltration machine of the present invention.

FIG. 2 is a schematic diagram of the appearance of the fully immersed rotary drum microfiltration machine from another perspective of the present invention.

Fig. 3 is a front view of the fully immersed rotary drum microfiltration machine of the present invention.

FIG. 4 is a plan view of FIG. 3 .

Fig. 5 is a perspective perspective view of the fully immersed rotary drum microfiltration machine of the present invention.

6 is a schematic diagram of the internal structure of the fully immersed rotary drum microfiltration machine of the present invention.

Fig. 7 is a perspective view of the fully immersed rotary drum microfiltration machine of the present invention.

Figure 8 is a front perspective view of the fully immersed rotary drum microfilter of the present invention.

In the figure, 1. Drum screen, 2. Water inlet, 3. Backwash drain pipe, 4. Piston drain plug, 5. Lever, 6. Backwash nozzle, 7. Piston rod, 8. Backwash bucket, 9 . Water outlet, 10. Geared motor cover, 12. Piston water inlet pipe, 13. Backwash sewage pipe, 14. Driven gear, 15. Driving gear, 6a. Backwash water inlet.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

This embodiment relates to a fully immersed rotary drum filter device. The device is mainly used in the water treatment of industrial circulating aquaculture systems, and can also be used in other fields of sewage treatment. The purpose is to use the fully immersed drum filter to filter and treat the aquaculture sewage, and to reduce the footprint of the microfilter by improving the utilization rate of the drum filter.

By fully immersing the drum filter screen in water, the resistance of the filter screen during rotation is relatively uniform, thereby solving the problems of large energy consumption and damage to the transmission system caused by the eccentricity of the drum when the drum rotates.

Referring to Fig. 1-Fig. 8, a fully immersed rotary drum microfilter includes a casing, a rotary drum filter 1 is arranged in the casing, and a water outlet 9 is provided at a position above the rotary drum filter 1 at one end of the casing, The drum screen 1 has a water inlet 2 that communicates with the outside; a backwash drain pipe 3 is fixed inside the drum screen 1, the upper end of the backwash drain pipe 3 is open upward, and the lower end extends outside the casing; A piston device with a piston rod 7 and a backwash bucket 8 are also fixed inside the drum screen 1. The piston device extends to the outside of the housing through the piston water inlet pipe 12, and the end of the piston rod 7 is rotatably connected to one end of the lever 5. The lever 5. The other end is rotatably connected with the backwash bucket 8, and the middle part of the lever 5 is connected with the piston drain plug 4 arranged on the upper end of the backwash drain pipe 3; The nozzle 6 extends to the outside of the casing through the backwash water inlet 6a; during operation, the drum screen 1 is immersed in the water body; during backwash: the backwash water inlet 6a and the piston water inlet pipe 12 enter water, and the piston The water inlet pressure of the water inlet pipe 12 drives the piston rod 7 to lift up, and drives the lever 5 to swing upward, thereby opening the piston drain plug 4, and the sewage in the backwash bucket 8 is discharged from the backwash drain pipe 3.

In this embodiment, referring to FIG. 6 , the backwash drain pipe 3 is L-shaped.

In this embodiment, referring to FIG. 6 , an inspection cover 13 is provided on the upper end of the casing.

In this embodiment, referring to FIG. 6 , a deceleration motor cover 10 is provided on the housing, and the deceleration motor inside is coaxially connected with the driving gear 15 , the driving gear 15 and the driving gear 14 are driven by a chain, and the driving gear 14 It is coaxially connected to the drum filter 1.

In this embodiment, referring to FIG. 6 , the backwash nozzle 6 and the water outlet 9 are located at the same height.

In this embodiment, referring to FIG. 6 , the water inlet 2, the backwash drain pipe 3, the backwash water inlet 6a, and the piston water inlet pipe 12 are arranged on the same side of the casing, and the water outlet 9 is arranged on the opposite side of the casing. The other side.

In this embodiment, referring to FIG. 6 , the piston device and the piston rod 7 are arranged vertically.

In this embodiment, the fully immersed rotary drum microfiltration machine is used for the water purification system of the factory recirculating aquaculture, and the attached drawings do not show the water purification system of the factory recirculating aquaculture in detail.

During backflushing, the piston rod 7 is pushed up by water pressure, and the piston drain plug 4 is opened using the lever principle to drain part of the water body in the microfilter, so that the drum filter screen and the backflushing funnel 8 leak out of the water surface, and the backflushing nozzle 6 is at the same time. It also sprays water at high pressure to the filter screen to achieve the effect of backwashing. The solid waste on the filter screen and the backwash water are discharged together through the backwash drain port.

After the backwash is over, the water pump stops water supply, the piston loses pressure, and falls naturally through the action of gravity, driving the lever to close the piston water outlet. At this time, the water level in the microfilter rises to the operating water level, and the microfilter starts to filter again.

The drum of the microfiltration machine can be adjusted by the frequency conversion controller, and the rotating speed of the drum can be adjusted according to different system designs and breeding requirements.

The backwash of the microfilter is controlled in two ways, one is the time relay control, and the backwash time and frequency are set according to the dirt generated by the cultured species, and the other is to set the backwash at the inlet end of the microfilter. Liquid level switch, when the water level exceeds the normal operating water level, the backwash system starts.

The device has the characteristics of small footprint, high utilization rate of filter screen area, low energy consumption, and the drum is not easily deformed and damaged.

The above are the preferred embodiments of the present invention, and those of ordinary skill in the art can also carry out various transformations or improvements on this basis. Without departing from the general concept of the present invention, these transformations or improvements should belong to the claimed protection of the present invention. within the range.

Claims (8)

1. A fully-immersed rotary drum micro-filter is characterized in that:

the device comprises a shell, wherein a rotary drum filter screen (1) is arranged in the shell, a water outlet (9) is formed in the position, located above the rotary drum filter screen (1), of one end of the shell, and the rotary drum filter screen (1) is provided with a water inlet (2) communicated with the outside;

a back washing drain pipe (3) is fixedly arranged in the drum filter screen (1), the opening at the upper end of the back washing drain pipe (3) faces upwards, and the lower end of the back washing drain pipe extends out of the shell;

a piston device with a piston rod (7) and a back flush bucket (8) are fixedly arranged in the rotary drum filter screen (1), the piston device extends out of the shell through a piston water inlet pipe (12), the end part of the piston rod (7) is rotatably connected with one end of a lever (5), the other end of the lever (5) is rotatably connected with the back flush bucket (8), and the middle part of the lever (5) is connected with a piston drain plug (4) arranged at the upper end of a back flush drain pipe (3);

a group of back washing nozzles (6) are arranged above the drum filter screen (1), and the back washing nozzles (6) extend to the outside of the shell through back washing water inlets (6 a);

when the rotary drum filter screen is in work, the rotary drum filter screen (1) is immersed in a water body;

during backwashing: the backwashing water inlet (6a) and the piston water inlet pipe (12) are filled with water, the water inlet pressure of the piston water inlet pipe (12) drives the piston rod (7) to jack up, the lever (5) is driven to swing upwards, the piston drain plug (4) is opened, and sewage in the backwashing hopper (8) is discharged from the backwashing drain pipe (3).

2. The fully-impregnated rotary drum microfilter of claim 1, wherein: the backwashing water discharging pipe (3) is L-shaped.

3. The fully-impregnated rotary drum microfilter of claim 1, wherein: an access cover (13) is arranged at the upper end of the shell.

4. The fully-impregnated rotary drum microfilter of claim 1, wherein: the casing is provided with a gear motor cover (10), a gear motor in the casing is coaxially connected with a driving gear (15), the driving gear (14) and a driven gear (15) are in transmission through a chain, and the driven gear (14) is coaxially connected with the rotary drum filter screen (1).

5. The fully-impregnated rotary drum microfilter of claim 1, wherein: the back washing spray head (6) and the water outlet (9) are positioned at the same height.

6. The fully-impregnated rotary drum microfilter of claim 1, wherein: the water inlet (2), the backwashing water discharge pipe (3), the backwashing water inlet (6a) and the piston water inlet pipe (12) are arranged on the same side of the shell, and the water outlet (9) is arranged on the opposite side of the shell.

7. The fully-impregnated rotary drum microfilter of claim 1, wherein: the piston device and the piston rod (7) are vertically arranged.

8. The fully-impregnated rotary drum microfilter of claim 1, wherein: the fully-immersed rotary drum micro-filter is used for a water purification system of factory circulating water culture.

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