CN203436889U

CN203436889U - Checking, guiding and filtering device

Info

Publication number: CN203436889U
Application number: CN201320504639.4U
Authority: CN
Inventors: 池泉; 胡伟春
Original assignee: Shanghai Panda Machinery Group Co Ltd
Current assignee: Shanghai Panda Machinery Group Co Ltd
Priority date: 2013-08-19
Filing date: 2013-08-19
Publication date: 2014-02-19
Anticipated expiration: 2023-08-19

Abstract

A checking, guiding and filtering device is mainly used for filtering and discharging domestic sewage. The working principle is that sewage is subjected to solid-liquid separation through a filtering screen, solids and impurities precipitate at the bottom of a filtering device, the filtered sewage flows out of the device, when dirt which is attached to the filtering screen and precipitating at the bottom of the filtering device is needed to be removed, the previously filtered sewage is used as a backwashing fluid and enters from a backwashing port to wash the filtering screen via a guide plate, then the sewage washes away the dirt precipitating at the bottom of the device, and the dirt is discharged out of a sewage discharge port together with the sewage. The filtering screen can be washed more comprehensively by the backwashing fluid by the aid of the guide plate of the device, the filtering screen is washed, and the resistance of a pipeline is small. In addition, checking devices are arranged at a water inlet and the sewage discharge port, the water inlet is connected with a domestic sewage pipe, and a washing fluid cannot enter the pipe due to the checking device at the water inlet during the backwashing operation, so that the energy is saved, and the efficiency of the checking, guiding and filtering device is higher; and the discharged dirt cannot flow back to the device due to the checking device at the sewage discharge port.

Description

Non-return flow guiding filter

Technical field

The utility model relates to a kind of non-return flow guiding 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 novel filter.

Summary of the invention

The utility model content is: overcome above-mentioned deficiency, invent a kind of non-return flow guiding 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 utility model solves the technical scheme that its technical problem adopts: this device is comprised of casing, case lid, screen pack, deflector, wherein on casing, there are water inlet, delivery port, backwash mouth and sewage draining exit, water inlet aperture is the twice of backwash bore, four times of water outlet bore, blowdown bore is identical with water inlet aperture, and sewage draining exit adopts eccentric reducer, assurance check plate can rotate and be greater than 90 °; Screen pack in this device is fixed in the groove on casing and case lid, and spot welding fixes, and screen pack filters solid, the impurity in sewage, and solid, contamination precipitation are near the sewage draining exit of casing; This device adopts a kind of deflector, it is agent structure that described deflector adopts the tangent line circular arc line of dishing out, current are through the loss of non-resistance almost, and two tangent line circular arcs that add in agent structure line reinforcement of dishing out, plays and reinforce and guide functions, deflector and casing and screen pack are welded and fixed, and backwash mouth is divided into three identical regions, and adopt this deflector, make the even cleaning and filtering net of cleaning fluid, guarantee the normal use of screen pack, reduce the resistance of pipe network; This device water inlet and sewage draining exit increase on casing has check device, the check plate of water inlet is in casing, the check plate of sewage draining exit is outside casing, in the situation that being only subject to gravity, check device becomes closed condition, and 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; The dirt that the check device of sewage draining exit makes to discharge can not backflow so far in device.

The beneficial effects of the utility model are: resistance is little, and 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 non-return guiding device schematic diagram of disposing of sewage.

Fig. 2 cleans the screen pack of this non-return guiding device the schematic diagram that the dirt that is deposited in this bottom of device is discharged with the sewage after filtering.

In figure: 1, casing; 2, case lid; 3, screen pack; 4, deflector, 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 utility model is further illustrated.

In Fig. 1, it is this non-return guiding device 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 non-return guiding device 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 non-return guiding device backwash 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 non-return flow guiding filter, this device is comprised of casing, case lid, screen pack, deflector, has water inlet, delivery port, backwash mouth and sewage draining exit on described casing, and described water inlet and sewage draining exit have check device; Described screen pack is fixed in the groove on casing and case lid, and it is agent structure that described deflector adopts the tangent line circular arc line of dishing out, and adds two tangent line circular arcs line reinforcement of dishing out in agent structure.

2. according to right, state the non-return flow guiding filter of asking described in 1, it is characterized in that on described casing, having water inlet, delivery port, backwash mouth and sewage draining exit, water inlet aperture is the twice of backwash bore, be four times of water outlet bore, blowdown bore is identical with water inlet aperture.

3. according to right, state the non-return flow guiding filter of asking described in 1, it is characterized in that, water inlet and sewage draining exit on described casing have check device, and in the situation that being only subject to gravity, check device becomes closed condition.

4. according to right, state the non-return flow guiding filter of asking described in 1, it is characterized in that, the check device of the water inlet on described casing, check plate is in casing.

5. according to right, state the non-return flow guiding filter of asking described in 1, it is characterized in that, the check device of the delivery port on described casing, check plate, outside casing, adopts eccentric reducer herein, and assurance check plate can rotate and be greater than 90 °.

6. according to right, state the non-return flow guiding filter of asking described in 1, it is characterized in that, described screen pack is fixed in the groove on casing and case lid, and spot welding is fixed.

7. according to right, state the non-return flow guiding filter of asking described in 1, it is characterized in that, it is agent structure that described deflector has adopted the tangent line circular arc line of dishing out, in agent structure, add two tangent line circular arcs line reinforcement of dishing out, deflector and casing and screen pack are welded and fixed, and backwash mouth is divided into three identical regions.