CN103933764A

CN103933764A - Backflush flow guiding non-return filter device

Info

Publication number: CN103933764A
Application number: CN201310021042.9A
Authority: CN
Inventors: 胡伟春; 程振龙
Original assignee: Shanghai Panda Machinery Group Co Ltd
Current assignee: Shanghai Panda Machinery Group Co Ltd
Priority date: 2013-01-21
Filing date: 2013-01-21
Publication date: 2014-07-23

Abstract

The present invention relates to a backflush flow guiding non-return filter device, which is mainly used for sewage filtrating and draining. The working principle of the device is that: firstly, a filter mesh is used to conduct solid-liquid separation to deposit solid and impurities on the bottom of the filter device, then the filtered sewage which flows out of the filter device is stored in a box; when it is necessary to remove the precipitation attached to the filter mesh and the filth on the bottom of the filter, the sewage filtered previously is used as backflush water, which gets into a backflush pipe and flows through a flow guiding plate to flush the filter mesh; and then the sewage washes the filth precipitated on the bottom of the device away, and the filth is drained off from a drainage pipe along with the sewage. The flow guiding plate in the device allows the backflush water to wash the filter mesh more completely. The filter mesh is washed with very small pipe resistance. Furthermore, there are non-return devices at an water inlet and a sewage outlet, and the water inlet is connected to a domestic sewage pipe. When the backflushing is being carried out, the non-return device of the water inlet prevents the flush water from entering the sewage pipe, so that the non-return device of the water inlet not only saves energy but also makes the flow guiding non-return filter device more efficient; and the non-return device at the sewage outlet prevents the discharged filth from back flowing into the device.

Description

Backwash diversion check filter

Technical field

The present invention relates to a kind of backwash diversion check filter, can generally be applied in HVAC and plumbing industry.

Background technology

Filter, is arranged on the entrance point of pressure-reducing valve, relief valve, Valve for keeping constant water level or miscellaneous equipment conventionally, is used for removing the impurity in medium, to protect the normal use of valve and equipment.Meanwhile, because plain filter easily causes foreign material, block the shortcomings such as dirt that screen pack, screen pack rinse comprehensively, discharge is back in pipeline and pollutant holding capability is little, this just needs new filter.

Summary of the invention

Content of the present invention is: overcome above-mentioned deficiency, invent a kind of backwash diversion check filter, this device does not need by new rinse water, and filter on the basis of sewage, by the water cleaning and filtering net after filtering, deflector is comprehensively cleaned screen pack, and check-valves prevents that dirt from refluxing.

The technical solution adopted for the present invention to solve the technical problems is: backwash diversion check filter, this device be first with screen pack by sewage Separation of Solid and Liquid, solid, contamination precipitation are in filter bottom, outside sewage outflow filter device after filtration, be stored in a casing, when need to remove on screen pack, adhere to and while being deposited in the dirt of filter bottom, sewage after previously having filtered enters from backwash pipeline, through deflector washing filter screen, then dirt is discharged from blow-off line, the check-valves in blow-off line stops dirt to reflux.

The invention has the beneficial effects as follows: resistance is little, screen pack is cleaned in time, and during filtration, MEDIA FLOW is clear and coherent smooth; Screen pack is difficult for stopping up, and the anti-deflector that cleans can be followed comprehensive cleaning and filtering net; Energy-conservation, anti-rinse water is with the sewage after filtering, and saves greatly power and water energy; Pollutant holding capability is large, can hold more impurity.

Accompanying drawing explanation

Fig. 1 is this backwash diversion check filter schematic diagram of disposing of sewage.

Fig. 2 cleans the screen pack of this backwash diversion check filter the schematic diagram that the dirt that is deposited in this bottom of device is discharged with the sewage after filtering.

In Fig. 1: 1, casing; 2, case lid; 3, screen pack; 4, deflector.

In Fig. 2: 1-1, water inlet; 1-2, delivery port; 1-3, backwash mouth; 1-4, sewage draining exit.

The specific embodiment

Below in conjunction with drawings and Examples, the present invention is further described.

In Fig. 1, it is this backwash diversion check filter schematic diagram of disposing of sewage, it is comprised of casing (1), case lid (2), screen pack (3), deflector (4), wherein on casing, has water inlet (1-1), delivery port (1-2), backwash mouth (1-3) and sewage draining exit (1-4).Sewage enters casing (1) from water inlet (1-1), screen pack in device (3) filters sewage, solid, impurity are blocked and are deposited in device influent side bottom, pressure due to external pipe, the check-valves that sewage draining exit (1-4) is located is in normally off, the pipeline that backwash mouth (1-3) connects also seals, so the sewage after filtering is discharged into outer tank from delivery port (1-2).

In Fig. 2, be to clean the screen pack of this backwash diversion check filter the schematic diagram that the dirt that is deposited in this bottom of device is discharged with the sewage after filtering.When need to remove on screen pack, adhere to and while being deposited in the dirt of filter bottom, submersible sewage pump outside device starts, the sewage being stored in outer tank of previously having discharged is entered from backwash diversion check filter device backwashing mouth (1-3), through the effect washing filter screen (3) of deflector (4), the check-valves of water inlet (1-1) prevents that flushing liquor from entering this pipeline; Due to the special construction of deflector (4), screen pack (3) is comprehensively cleaned, and the dirt adhering to is swept away, and the dirt being deposited at the bottom of case also rushed, and flows out together from sewage draining exit (1-4), and the check-valves of sewage draining exit prevents sewage backflow.

Claims

1. a backwash diversion check filter, it is comprised of casing, case lid, screen pack, deflector, wherein on casing, has water inlet, delivery port, backwash mouth and sewage draining exit; The operation principle of this device be first with screen pack by sewage Separation of Solid and Liquid, solid, contamination precipitation are in filter bottom, sewage after filtration flows out this device, be stored in a casing, when need to remove on screen pack, adhere to and while being deposited in the dirt of filter bottom, the sewage after previously having filtered was used for doing counter-flushing liquid, from backwash mouth, enter, through deflector washing filter screen, then sewage rushes the dirt that is deposited in bottom of device, discharges together from sewage draining exit; Deflector in this device can make more fully cleaning and filtering net of anti-cleaning fluid, and screen pack is cleaned, and the resistance of pipeline is very little; Water inlet and sewage draining exit have check device in addition, and water inlet is connecting sanitary sewer, and when backsurging operation, the check device of water inlet makes flushing liquor can not enter this pipeline, have so both saved the energy and have also made the efficiency of non-return flow guiding filter higher; The dirt that the check device of sewage draining exit makes to discharge can not backflow so far in device.

2. backwash diversion check filter according to claim 1, is characterized in that, sanitary sewage is filtered, and carries out Separation of Solid and Liquid, has avoided sanitary sewage directly to flow through pump, and the solid impurity in sewage blocks pump, can not normally move; Backwash is with the sewage after filtering, water energy and the electric energy saved like this.

3. casing according to claim 1, is characterized in that, has water inlet, delivery port, backwash mouth and sewage draining exit on casing, and all for different effects, wherein water inlet and delivery port have check device; The water environment capacity that the design of body structure improves greatly in addition.

4. the check device of water inlet on casing according to claim 1, it is characterized in that, water inlet is connecting sanitary sewer, when backsurging operation, the check device of water inlet makes flushing liquor can not enter this pipeline, has so both saved the energy and has also made the efficiency of non-return flow guiding filter higher.

5. the check device at sewage draining exit place on casing according to claim 1, is characterized in that, the dirt of discharging can not backflowed to non-return flow guiding filter.

6. screen pack according to claim 1; it is characterized in that, mainly to the solid in medium of flowing through, impurity etc., filter to protect the accessory on equipment pipe avoid wearing and tearing and stop up, can protect the normal work of equipment; backwash makes there is no dirt on screen pack, is beneficial to the circulation of medium.

7. deflector according to claim 1, it is characterized in that, having adopted the tangent line circular arc line of dishing out is agent structure, and current are through almost non-resistance loss, two tangent line circular arcs that add in agent structure line reinforcement of dishing out, had both played reinforcement effect and had also played guide functions; The dual tangent line circular arc of the such symmetry line structure of dishing out, makes current be disperseed or gather, fully when cleaning fluid flows into from the port of export, deflector shunting cleaning fluid, make the even cleaning and filtering net of cleaning fluid, guarantee the normal use of screen pack, reduce the resistance of pipe network.