阅读说明：本技术 一种污水过滤方法 (Sewage filtering method ) 是由 李宗海 于 2020-11-11 设计创作，主要内容包括：本发明公开了一种污水过滤方法,移动驱动装置驱动移动架向前移动,使移动架上的各快接母插头离开过滤器壳体前端的各快接公插头,旋转驱动装置驱动壳体封盖旋转到相应位置后,移动驱动装置驱动移动架向后移动,使第三快接母插头连接第一连通管的快接公插头,第四快接母插头连接第二滤芯装置前端的快接公插头,第五快接母插头连接第二连通管的快接公插头,第六快接母插头连接第一滤芯装置前端的快接公插头,打开电磁阀,从进水管进水,从排水管排水,实现第一滤芯装置与第二滤芯装置的并联过滤。可实现装置的自动调整,无需人工干预,调节难度低,方便快捷。(The invention discloses a sewage filtering method, wherein a mobile driving device drives a mobile frame to move forwards to enable each quick-connection female plug on the mobile frame to leave each quick-connection male plug at the front end of a filter shell, a rotary driving device drives a shell cover to rotate to a corresponding position, the mobile driving device drives the mobile frame to move backwards to enable a third quick-connection female plug to be connected with a quick-connection male plug of a first communication pipe, a fourth quick-connection female plug to be connected with a quick-connection male plug at the front end of a second filter element device, a fifth quick-connection female plug to be connected with a quick-connection male plug of a second communication pipe, a sixth quick-connection female plug to be connected with a quick-connection male plug at the front end of the first filter element device, an electromagnetic valve is opened to feed water from a water inlet pipe and discharge water from a water discharge pipe, and the parallel filtering of the first filter element device and. The automatic adjustment of the device can be realized, manual intervention is not needed, the adjusting difficulty is low, and convenience and rapidness are realized.)

1. A sewage filtering method is characterized by comprising the following steps:

step 1, a first filter element mounting groove and a second filter element mounting groove are arranged in a filter shell, the extending direction of the filter element mounting grooves is taken as the front-back direction, the first filter element mounting groove and the second filter element mounting groove are groove bodies with front openings, a first quick-connection female plug is arranged on the rear end surface of the first filter element mounting groove, a second quick-connection female plug is arranged on the rear end surface of the second filter element mounting groove, the filter shell is also provided with a first communicating pipe and a second communicating pipe which extend along the front-back direction, the first filter element mounting groove, the first communicating pipe, the second filter element mounting groove and the second communicating pipe are sequentially and uniformly distributed along the circumferential direction, the rear end of the first quick-connection female plug is connected with a first tee joint, the second end of the first tee joint is connected with a water inlet pipe, the third end of the first tee joint is connected with the rear end of the first communicating pipe through a pipeline, and the rear end of the second quick-connection female plug is connected with the rear end of the second communicating pipe through a pipeline;

step 2, a first filter element device is installed in the first filter element installation groove, a second filter element device is installed in the second filter element installation groove, both ends of the first filter element device and both ends of the second filter element device are quick-connection male plugs, the quick-connection male plug at the rear end of the first filter element device is inserted into the first quick-connection female plug, and the quick-connection male plug at the rear end of the second filter element device is inserted into the second quick-connection female plug;

step 3, the front end of the first communicating pipe and the front end of the second communicating pipe are connected with a quick-connection male plug, the quick-connection male plug at the front end of the first filter element device, the quick-connection male plug at the front end of the second filter element device, the quick-connection male plug of the first communicating pipe and the quick-connection male plug of the second communicating pipe are all located on the first cylindrical surface, and the front end surfaces of the quick-connection male plugs are flush; the shell sealing cover is arranged on the front side of the filter shell, a rotary driving device for driving the shell sealing cover to rotate around the axis of the first cylindrical surface is arranged on the filter shell, a movable frame capable of moving in the front-back direction is arranged on the shell sealing cover, and a movable driving device for driving the movable frame to move back and forth is arranged on the shell sealing cover;

step 4, a third quick-connection female plug, a fourth quick-connection female plug, a fifth quick-connection female plug and a sixth quick-connection female plug which are uniformly distributed along the circumferential direction are arranged on the movable frame, the axial leads of the third quick-connection female plug, the fourth quick-connection female plug, the fifth quick-connection female plug and the sixth quick-connection female plug are also positioned on the first cylindrical surface, the rear end surfaces of the third quick-connection female plug, the fourth quick-connection female plug, the fifth quick-connection female plug and the sixth quick-connection female plug are flush, the front end of the third quick-connection female plug is connected with the front end of the fifth quick-connection female plug through a pipeline, the front end of the sixth quick-connection female plug is connected with a second tee, the second end of the second tee is sequentially connected with the front end of the electromagnetic valve and the fourth quick-connection female plug through a pipeline, the third end of the second tee is connected with a drain pipe, the rotary, so that each quick-connection male plug on the movable frame is correspondingly connected with each female plug at the front end of the filter shell;

step 5, the mobile driving device drives the mobile frame to move forwards, so that each quick-connection female plug on the mobile frame leaves each quick-connection male plug at the front end of the filter shell, the rotary driving device drives the shell sealing cover to rotate to a corresponding position, the mobile driving device drives the mobile frame to move backwards, a third quick-connection female plug is connected with the quick-connection male plug at the front end of the first filter element device, a fourth quick-connection female plug is connected with the quick-connection male plug of the first communication pipe, a fifth quick-connection female plug is connected with the quick-connection male plug at the front end of the second filter element device, a sixth quick-connection female plug is connected with the quick-connection male plug of the second communication pipe, the electromagnetic valve is closed, water is fed from the water inlet pipe, water is drained from the water drain pipe, and serial filtration of the first filter element device and the second;

and 6, driving the moving frame to move forwards by the moving driving device, enabling each quick-connection female plug on the moving frame to leave each quick-connection male plug at the front end of the filter shell, driving the shell sealing cover to rotate to a corresponding position by the rotary driving device, driving the moving frame to move backwards by the moving driving device, enabling the third quick-connection female plug to be connected with the quick-connection male plug of the first communication pipe, enabling the fourth quick-connection female plug to be connected with the quick-connection male plug at the front end of the second filter element device, enabling the fifth quick-connection female plug to be connected with the quick-connection male plug of the second communication pipe, enabling the sixth quick-connection female plug to be connected with the quick-connection male plug at the front end of the first filter element device, opening the electromagnetic valve, feeding water from the water inlet pipe, draining water from the water drain pipe, and realizing the parallel.

2. The method of claim 1, further comprising: the third connects the male plug of connecing soon of first filter core device front end soon, and the fourth connects the male plug of connecing soon of first communicating pipe soon, and the fifth connects the male plug of connecing soon of second filter core device front end soon, and the male plug of connecing soon of sixth connects the female plug connection second communicating pipe soon.

3. The method of claim 1, further comprising: the third quick-connection female plug is connected with a quick-connection male plug of the first communication pipe, the fourth quick-connection female plug is connected with a quick-connection male plug at the front end of the second filter element device, the fifth quick-connection female plug is connected with a quick-connection male plug of the second communication pipe, and the sixth quick-connection female plug is connected with a quick-connection male plug at the front end of the first filter element device.

4. The method of claim 1, further comprising: the rotary driving device comprises a first rotating shaft and a driving motor which are arranged in the filter shell, one end of the first rotating shaft is connected with the driving motor for transmission, and the other end of the first rotating shaft is fixedly connected with the cover body.

5. The method of claim 1, further comprising: and sealing rings for sealing gaps between the quick-connection female plugs and the quick-connection male plugs are arranged in the quick-connection female plugs and/or on the surfaces of the quick-connection male plugs.

6. The method of claim 1, further comprising: the filter shell is provided with a first bolt which limits the first filter element device in the first filter element mounting groove; and a second bolt for limiting the second filter element device in the second filter element mounting groove is arranged on the filter shell.

7. The method of claim 1, further comprising: the movable driving device is a plurality of driving hydraulic cylinders which are arranged on the shell sealing cover along the front-back direction, and piston rods of the driving hydraulic cylinders are fixedly connected with the movable frame.

8. The method of claim 1, further comprising: the device comprises a control device, and a rotary driving device and a mobile driving device are respectively electrically connected with the control device.

Technical Field

The invention relates to a sewage filtering method, belonging to the technical field of sewage treatment environment-friendly equipment.

Background

The filtering device is used as mature solid-liquid separation equipment, is widely applied to the field of environmental protection, and becomes important equipment for sewage and sludge treatment. However, the sewage filtering system adopting the filtering device at present has the following problems: once the filtering device in the system is set, the filtering effect is difficult to adjust according to different sewage treatment requirements, the waste of the consumable materials of the filtering device can be caused under the working condition with lower water outlet requirements, and the cost consumption is larger for the filtering device with high equipment cost; and for the working condition that the requirement for water outlet is higher, the existing system needs to be adjusted, and labor and time are consumed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a sewage filtering method to at least solve the technical problem that the prior art is difficult to adapt to different working condition requirements.

In order to achieve the purpose, the invention is realized by the following technical scheme:

a method of filtering contaminated water comprising the steps of:

step 1, a first filter element mounting groove and a second filter element mounting groove are arranged in a filter shell, the extending direction of the filter element mounting grooves is taken as the front-back direction, the first filter element mounting groove and the second filter element mounting groove are groove bodies with front openings, a first quick-connection female plug is arranged on the rear end surface of the first filter element mounting groove, a second quick-connection female plug is arranged on the rear end surface of the second filter element mounting groove, the filter shell is also provided with a first communicating pipe and a second communicating pipe which extend along the front-back direction, the first filter element mounting groove, the first communicating pipe, the second filter element mounting groove and the second communicating pipe are sequentially and uniformly distributed along the circumferential direction, the rear end of the first quick-connection female plug is connected with a first tee joint, the second end of the first tee joint is connected with a water inlet pipe, the third end of the first tee joint is connected with the rear end of the first communicating pipe through a pipeline, and the rear end of the second quick-connection female plug is connected with the rear end of the second communicating pipe through a pipeline;

step 2, a first filter element device is installed in the first filter element installation groove, a second filter element device is installed in the second filter element installation groove, both ends of the first filter element device and both ends of the second filter element device are quick-connection male plugs, the quick-connection male plug at the rear end of the first filter element device is inserted into the first quick-connection female plug, and the quick-connection male plug at the rear end of the second filter element device is inserted into the second quick-connection female plug;

step 3, the front end of the first communicating pipe and the front end of the second communicating pipe are connected with a quick-connection male plug, the quick-connection male plug at the front end of the first filter element device, the quick-connection male plug at the front end of the second filter element device, the quick-connection male plug of the first communicating pipe and the quick-connection male plug of the second communicating pipe are all located on the first cylindrical surface, and the front end surfaces of the quick-connection male plugs are flush; the shell sealing cover is arranged on the front side of the filter shell, a rotary driving device for driving the shell sealing cover to rotate around the axis of the first cylindrical surface is arranged on the filter shell, a movable frame capable of moving in the front-back direction is arranged on the shell sealing cover, and a movable driving device for driving the movable frame to move back and forth is arranged on the shell sealing cover;

step 4, a third quick-connection female plug, a fourth quick-connection female plug, a fifth quick-connection female plug and a sixth quick-connection female plug which are uniformly distributed along the circumferential direction are arranged on the movable frame, the axial leads of the third quick-connection female plug, the fourth quick-connection female plug, the fifth quick-connection female plug and the sixth quick-connection female plug are also positioned on the first cylindrical surface, the rear end surfaces of the third quick-connection female plug, the fourth quick-connection female plug, the fifth quick-connection female plug and the sixth quick-connection female plug are flush, the front end of the third quick-connection female plug is connected with the front end of the fifth quick-connection female plug through a pipeline, the front end of the sixth quick-connection female plug is connected with a second tee, the second end of the second tee is sequentially connected with the front end of the electromagnetic valve and the fourth quick-connection female plug through a pipeline, the third end of the second tee is connected with a drain pipe, the rotary, so that each quick-connection male plug on the movable frame is correspondingly connected with each female plug at the front end of the filter shell;

step 5, the mobile driving device drives the mobile frame to move forwards, so that each quick-connection female plug on the mobile frame leaves each quick-connection male plug at the front end of the filter shell, the rotary driving device drives the shell sealing cover to rotate to a corresponding position, the mobile driving device drives the mobile frame to move backwards, a third quick-connection female plug is connected with the quick-connection male plug at the front end of the first filter element device, a fourth quick-connection female plug is connected with the quick-connection male plug of the first communication pipe, a fifth quick-connection female plug is connected with the quick-connection male plug at the front end of the second filter element device, a sixth quick-connection female plug is connected with the quick-connection male plug of the second communication pipe, the electromagnetic valve is closed, water is fed from the water inlet pipe, water is drained from the water drain pipe, and serial filtration of the first filter element device and the second;

and 6, driving the moving frame to move forwards by the moving driving device, enabling each quick-connection female plug on the moving frame to leave each quick-connection male plug at the front end of the filter shell, driving the shell sealing cover to rotate to a corresponding position by the rotary driving device, driving the moving frame to move backwards by the moving driving device, enabling the third quick-connection female plug to be connected with the quick-connection male plug of the first communication pipe, enabling the fourth quick-connection female plug to be connected with the quick-connection male plug at the front end of the second filter element device, enabling the fifth quick-connection female plug to be connected with the quick-connection male plug of the second communication pipe, enabling the sixth quick-connection female plug to be connected with the quick-connection male plug at the front end of the first filter element device, opening the electromagnetic valve, feeding water from the water inlet pipe, draining water from the water drain pipe, and realizing the parallel.

The water inlet pipe and the water outlet pipe are fixedly arranged, the two travel devices can be adjusted to be connected in series or in parallel by rotating the shell sealing cover, so that the same device can use two working conditions with different water quality requirements. The automatic adjustment of the device can be realized, manual intervention is not needed, the adjusting difficulty is low, and convenience and rapidness are realized.

Optionally, the third quick-connection female plug is connected with the quick-connection male plug at the front end of the first filter element device, the fourth quick-connection female plug is connected with the quick-connection male plug of the first communication pipe, the fifth quick-connection female plug is connected with the quick-connection male plug at the front end of the second filter element device, and the sixth quick-connection female plug is connected with the quick-connection male plug of the second communication pipe.

Optionally, the third quick-connection female plug is connected with the quick-connection male plug of the first communication pipe, the fourth quick-connection female plug is connected with the quick-connection male plug of the front end of the second filter element device, the fifth quick-connection female plug is connected with the quick-connection male plug of the second communication pipe, and the sixth quick-connection female plug is connected with the quick-connection male plug of the front end of the first filter element device.

Optionally, the rotation driving device includes a first rotating shaft and a driving motor arranged in the filter housing, one end of the first rotating shaft is connected with the driving motor for transmission, and the other end of the first rotating shaft is fixedly connected with the cover body.

Optionally, a sealing ring for sealing a gap between the quick-connection female plug and the quick-connection male plug is arranged in each quick-connection female plug and/or on the surface of each quick-connection male plug.

Preferably, the filter housing is provided with a first bolt for limiting the first filter element device in the first filter element mounting groove.

Preferably, the filter housing is provided with a second bolt for limiting the second filter element device in the second filter element mounting groove. The invention has the beneficial effects that:

the water inlet pipe and the water outlet pipe are fixedly arranged, the two travel devices can be adjusted to be connected in series or in parallel by rotating the shell sealing cover, so that the same device can use two working conditions with different water quality requirements. The automatic adjustment of the device can be realized, manual intervention is not needed, the adjusting difficulty is low, and convenience and rapidness are realized.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic sectional view of a sewage filtering apparatus according to the present invention;

FIG. 2 is a schematic front view of a filter housing of a sewage filtering apparatus according to the present invention;

FIG. 3 is a rear view of a filter housing of a sewage filtering apparatus according to the present invention;

FIG. 4 is a schematic front view of a housing cover of a sewage filtering apparatus according to the present invention;

FIG. 5 is a rear view of a housing cover of the sewage filtering apparatus according to the present invention;

fig. 6 is a schematic structural view of a sewage filtering apparatus according to the present invention when a movable frame moves backward to a working state.

Reference numbers and corresponding part names in the drawings:

1-a filter shell, 2-a shell cover, 3-a first filter element mounting groove, 4-a second filter element mounting groove, 5-a first quick-connection female plug, 6-a second quick-connection female plug, 7-a first communication pipe, 8-a second communication pipe, 9-a first tee joint, 10-a second end connection water inlet pipe, 11-a first filter element device, 12-a second filter element device, 13-a quick-connection male plug, 14-a movable frame, 15-a driving hydraulic cylinder, 16-a third quick-connection female plug, 17-a fourth quick-connection female plug, 18-a fifth quick-connection female plug, 19-a sixth quick-connection female plug, 20-a second tee joint, 21-an electromagnetic valve and 22-a third end connection water outlet pipe.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, which are provided for the purpose of giving a thorough understanding of the present disclosure.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and are not to be construed as limiting the present invention, which is for purposes of illustration only and is not intended to be in the sole embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 6, the present invention provides a method for filtering sewage, comprising the steps of:

step 1, a first filter element mounting groove and a second filter element mounting groove are arranged in a filter shell, the extending direction of the filter element mounting grooves is taken as the front-back direction, the first filter element mounting groove and the second filter element mounting groove are groove bodies with front openings, a first quick-connection female plug is arranged on the rear end surface of the first filter element mounting groove, a second quick-connection female plug is arranged on the rear end surface of the second filter element mounting groove, the filter shell is also provided with a first communicating pipe and a second communicating pipe which extend along the front-back direction, the first filter element mounting groove, the first communicating pipe, the second filter element mounting groove and the second communicating pipe are sequentially and uniformly distributed along the circumferential direction, the rear end of the first quick-connection female plug is connected with a first tee joint, the second end of the first tee joint is connected with a water inlet pipe, the third end of the first tee joint is connected with the rear end of the first communicating pipe through a pipeline, and the rear end of the second quick-connection female plug is connected with the rear end of the second communicating pipe through a pipeline;

step 2, a first filter element device is installed in the first filter element installation groove, a second filter element device is installed in the second filter element installation groove, both ends of the first filter element device and both ends of the second filter element device are quick-connection male plugs, the quick-connection male plug at the rear end of the first filter element device is inserted into the first quick-connection female plug, and the quick-connection male plug at the rear end of the second filter element device is inserted into the second quick-connection female plug;

step 3, the front end of the first communicating pipe and the front end of the second communicating pipe are connected with a quick-connection male plug, the quick-connection male plug at the front end of the first filter element device, the quick-connection male plug at the front end of the second filter element device, the quick-connection male plug of the first communicating pipe and the quick-connection male plug of the second communicating pipe are all located on the first cylindrical surface, and the front end surfaces of the quick-connection male plugs are flush; the shell sealing cover is arranged on the front side of the filter shell, a rotary driving device for driving the shell sealing cover to rotate around the axis of the first cylindrical surface is arranged on the filter shell, a movable frame capable of moving in the front-back direction is arranged on the shell sealing cover, and a movable driving device for driving the movable frame to move back and forth is arranged on the shell sealing cover;

step 4, a third quick-connection female plug, a fourth quick-connection female plug, a fifth quick-connection female plug and a sixth quick-connection female plug which are uniformly distributed along the circumferential direction are arranged on the movable frame, the axial leads of the third quick-connection female plug, the fourth quick-connection female plug, the fifth quick-connection female plug and the sixth quick-connection female plug are also positioned on the first cylindrical surface, the rear end surfaces of the third quick-connection female plug, the fourth quick-connection female plug, the fifth quick-connection female plug and the sixth quick-connection female plug are flush, the front end of the third quick-connection female plug is connected with the front end of the fifth quick-connection female plug through a pipeline, the front end of the sixth quick-connection female plug is connected with a second tee, the second end of the second tee is sequentially connected with the front end of the electromagnetic valve and the fourth quick-connection female plug through a pipeline, the third end of the second tee is connected with a drain pipe, the rotary, so that each quick-connection male plug on the movable frame is correspondingly connected with each female plug at the front end of the filter shell;

step 5, the mobile driving device drives the mobile frame to move forwards, so that each quick-connection female plug on the mobile frame leaves each quick-connection male plug at the front end of the filter shell, the rotary driving device drives the shell sealing cover to rotate to a corresponding position, the mobile driving device drives the mobile frame to move backwards, a third quick-connection female plug is connected with the quick-connection male plug at the front end of the first filter element device, a fourth quick-connection female plug is connected with the quick-connection male plug of the first communication pipe, a fifth quick-connection female plug is connected with the quick-connection male plug at the front end of the second filter element device, a sixth quick-connection female plug is connected with the quick-connection male plug of the second communication pipe, the electromagnetic valve is closed, water is fed from the water inlet pipe, water is drained from the water drain pipe, and serial filtration of the first filter element device and the second;

and 6, driving the moving frame to move forwards by the moving driving device, enabling each quick-connection female plug on the moving frame to leave each quick-connection male plug at the front end of the filter shell, driving the shell sealing cover to rotate to a corresponding position by the rotary driving device, driving the moving frame to move backwards by the moving driving device, enabling the third quick-connection female plug to be connected with the quick-connection male plug of the first communication pipe, enabling the fourth quick-connection female plug to be connected with the quick-connection male plug at the front end of the second filter element device, enabling the fifth quick-connection female plug to be connected with the quick-connection male plug of the second communication pipe, enabling the sixth quick-connection female plug to be connected with the quick-connection male plug at the front end of the first filter element device, opening the electromagnetic valve, feeding water from the water inlet pipe, draining water from the water drain pipe, and realizing the parallel.

By adopting the filtering method, the water inlet pipe and the water outlet pipe are fixedly arranged, the series connection and the parallel connection of the two traveling devices can be adjusted by rotating the shell sealing cover, so that the same device can use two working conditions with different water quality requirements. The automatic adjustment of the device can be realized, manual intervention is not needed, the adjusting difficulty is low, and convenience and rapidness are realized.

As shown in fig. 1-6, a sewage filtering apparatus comprises a filter housing 1 and a housing cover 2, wherein a first filter element mounting groove 3 and a second filter element mounting groove 4 are arranged in the filter housing 1, the extending direction of the filter element mounting grooves is taken as the front-back direction, the first filter element mounting groove 3 and the second filter element mounting groove 4 are both groove bodies with front openings, a first quick-connection female plug 5 is arranged on the rear end surface of the first filter element mounting groove 3, a second quick-connection female plug 6 is arranged on the rear end surface of the second filter element mounting groove 4, the filter housing 1 is further provided with a first communicating pipe 7 and a second communicating pipe 8 which both extend along the front-back direction, the first filter element mounting groove 3, the first communicating pipe 7, the second filter element mounting groove 4 and the second communicating pipe 8 are sequentially and uniformly distributed along the circumferential direction, the rear end of the first quick-connection female plug 5 is connected with a first tee joint 9, the second end of the first, the third end of the first tee joint 9 is connected with the rear end of the first communicating pipe 7 through a pipeline, the rear end of the second quick-connection female plug 6 is connected with the rear end of the second communicating pipe 8 through a pipeline,

a first filter element device 11 is arranged in the first filter element mounting groove 3, a second filter element device 12 is arranged in the second filter element mounting groove 4, both ends of the first filter element device 11 and both ends of the second filter element device 12 are quick-connection male plugs 13, the quick-connection male plug 13 at the rear end of the first filter element device 11 is inserted in the first quick-connection female plug 5, the quick-connection male plug 13 at the rear end of the second filter element device 12 is inserted in the second quick-connection female plug 6,

the front end of the first communicating pipe 7 and the front end of the second communicating pipe 8 are both connected with a quick-connection male plug 13, the quick-connection male plug 13 at the front end of the first filter element device 11, the quick-connection male plug 13 at the front end of the second filter element device 12, the quick-connection male plug 13 of the first communicating pipe 7 and the quick-connection male plug 13 of the second communicating pipe 8 are all located on the first cylindrical surface, and the front end surfaces are flush;

the shell cover 2 is arranged at the front side of the filter shell 1, a rotary driving device for driving the shell cover 2 to rotate around the axial lead of the first cylindrical surface is arranged on the filter shell 1,

a movable frame 14 which can move along the front-back direction is arranged on the shell sealing cover 2, a movement driving device for driving the movable frame 14 to move back and forth is arranged on the shell sealing cover 2, optionally, the movement driving device is a plurality of driving hydraulic cylinders 15 which are arranged on the shell sealing cover 2 along the front-back direction, and piston rods of the driving hydraulic cylinders 15 are fixedly connected with the movable frame 14;

the movable frame 14 is provided with a third quick-connection female plug 16, a fourth quick-connection female plug 17, a fifth quick-connection female plug 18 and a sixth quick-connection female plug 19 which are uniformly distributed along the circumferential direction, the axial leads of the third quick-connection female plug 16, the fourth quick-connection female plug 17, the fifth quick-connection female plug 18 and the sixth quick-connection female plug 19 are all positioned on the first cylindrical surface, and the rear end surfaces are flush with each other,

the front end of a third quick-connection female plug 16 is connected with the front end of a fifth quick-connection female plug 18 through a pipeline, the front end of a sixth quick-connection female plug 19 is connected with a second tee joint 20, the second end of the second tee joint 20 is sequentially connected with an electromagnetic valve 21 and the front end of a fourth quick-connection female plug 17 through pipelines, the third end of the second tee joint 20 is connected with a water drainage pipe 22,

after the rotary driving device drives the housing cover 2 to rotate to the corresponding position, the moving driving device drives the moving frame 14 to move backwards, so that each quick-connection male plug 13 on the moving frame 14 is correspondingly connected with each female plug at the front end of the filter housing 1.

The water inlet pipe 10 and the water outlet pipe 22 are fixedly arranged, the series connection and the parallel connection of the two travel devices can be adjusted by rotating the shell sealing cover 2, so that the same device can use two working conditions with different water quality requirements. The automatic adjustment of the device can be realized, manual intervention is not needed, the adjusting difficulty is low, and convenience and rapidness are realized.

Optionally, the third quick-connection female plug 16 is connected to the quick-connection male plug 13 at the front end of the first filter element device 11, the fourth quick-connection female plug 17 is connected to the quick-connection male plug 13 of the first communication pipe 7, the fifth quick-connection female plug 18 is connected to the quick-connection male plug 13 at the front end of the second filter element device 12, and the sixth quick-connection female plug 19 is connected to the quick-connection male plug 13 of the second communication pipe 8.

Optionally, the third quick-connection female plug 16 is connected to the quick-connection male plug 13 of the first communication pipe 7, the fourth quick-connection female plug 17 is connected to the quick-connection male plug 13 at the front end of the second filter element device 12, the fifth quick-connection female plug 18 is connected to the quick-connection male plug 13 of the second communication pipe 8, and the sixth quick-connection female plug 19 is connected to the quick-connection male plug 13 at the front end of the first filter element device 11.

Optionally, the rotation driving device includes a first rotating shaft and a driving motor arranged in the filter housing 1, one end of the first rotating shaft is connected with the driving motor for transmission, and the other end of the first rotating shaft is fixedly connected with the cover body.

Optionally, a sealing ring for sealing a gap between the quick-connection female plug and the quick-connection male plug 13 is arranged in each quick-connection female plug and/or on the surface of each quick-connection male plug 13.

Preferably, the filter housing 1 is provided with a first plug 23 for limiting the first filter element device 11 in the first filter element installation groove 3.

Preferably, the filter housing 1 is provided with a second plug 24 for limiting the second filter cartridge device 12 in the second filter cartridge installation slot 4.

Preferably, the sewage filtering device further comprises a control device, and the rotary driving device and the mobile driving device are respectively electrically connected with the control device. The control device controls the rotation driving device and the movement driving device to act, and the automatic adjustment of the working state of the device is realized.

The water inlet pipe 10 and the water outlet pipe 22 are fixedly arranged, the series connection and the parallel connection of the two travel devices can be adjusted by rotating the shell sealing cover 2, so that the same device can use two working conditions with different water quality requirements. The automatic adjustment of the device can be realized, manual intervention is not needed, the adjusting difficulty is low, and convenience and rapidness are realized.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may include only a single embodiment, and such description is for clarity only, and those skilled in the art will be able to make the description as a whole, and the embodiments may be appropriately combined to form other embodiments as will be apparent to those skilled in the art.