CN2568279Y

CN2568279Y - Back-flushing dirt discharge filter

Info

Publication number: CN2568279Y
Application number: CN 02277210
Authority: CN
Inventors: 席立达
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-05
Filing date: 2002-09-05
Publication date: 2003-08-27
Anticipated expiration: 2012-09-05

Abstract

The utility model discloses a back-flushing dirt-discharging filter having a the advantages of easy washing and convenient maintenance for a filter cartridge, which comprises a casing body (2), a filter cartridge (9), a butterfly valve (10), an inlet (1), an outlet (7) and a dirt-discharging outlet (8), whereein, the inlet (1) and the outlet (7) are respectively positioned at the front end and the back end of the casing body (2), and the filter cartridge (9) is arranged in the casing body (2). The butterfly valve (10) is arranged at the front-half part of the filter cartridge (9). The dirt-discharging outlet (8) is arranged at the backside part of the casing body (2) and communicated with the filter cartridge (9). The filter cartridge (9) is composed of more than two sections of filter nets (91) and cartridge ends (92). The filter nets are connected by a clamping hoop (5), and the lateral part of the cartridge end (92) is provided with a hole which is communicated with the dirt-discharging outlet (8). The casing body (2) is provided with a manhole (3) and a manhole cover (4).

Description

The recoil drain filter

Technical field the utility model relates to a kind of filter, is specifically related to a kind of architecture advances of the drain filter that recoils.

A kind of recoil drain filter that adopts in the present feed liquid pipeline of background technology, comprise metal shell, import, outlet, sewage draining exit, cartridge filter and butterfly valve, it is by being arranged on the butterfly valve control flow direction-changing of housing entrance point, when butterfly valve is in opening, liquid in the pipeline flows out from outlet by the mesh of cartridge filter, and impurity is deposited in the cartridge filter.When butterfly valve is in closed condition, the cartridge filter mesh that liquid is forced to before the butterfly valve flows out, and enters the cartridge filter outside, again side inflow inside outside cartridge filter, cartridge filter from producing backwash outside to inside, is inwardly washed the impurity that adheres on the mesh and discharges from sewage draining exit.But so flushing can not be rinsed impurity in the tube well fully, and long-time use will result in blockage, and influence the pipeline operate as normal, and its cartridge filter be an overall structure, unpick and wash difficulty, inconvenient maintenance.

The summary of the invention technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, provides a kind of cartridge filter recoil drain filter easily removable and washable, easy to maintenance.

The technical scheme that its technical problem that solves the utility model adopts is: it comprises housing, cartridge filter, butterfly valve, import, outlet and sewage draining exit, import, before outlet lays respectively at housing, the rear end, cartridge filter places enclosure interior, butterfly valve places the first half of cartridge filter, be used for opening and closing of controlled filter tube inside, sewage draining exit is positioned at the rear lateral portion of housing, communicate with cartridge filter, it is characterized in that described cartridge filter forms with upper filter screen and tube end by two sections, use clamp connection between each filter screen, the distolateral portion of tube is provided with the hole, communicates with sewage draining exit, and described housing top is provided with manhole and manhole cover.

Described filter screen is provided with handle; Described manhole bore is greater than the external diameter of filter screen.

Recoil drain filter of the present utility model is owing to its cartridge filter is formed with clamp connection by the multistage filter screen, when needs are unpicked and washed or changed, as long as unclamp clip, to take out the manhole of filter screen on being arranged at housing, reinstall after cleaning or changing and get final product, have unpick and wash, characteristics easy to maintenance; Also be provided with handle on the filter screen, can make things convenient for installation and removal.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment.

Fig. 2 is the left view of Fig. 1.

Each label is represented among the figure: 1, import 2, housing 3, manhole 4, manhole cover 5, clip 6, handle 7, outlet 8, sewage draining exit 9, cartridge filter 91, filter screen 92, tube end 10, butterfly valve

The specific embodiment as shown in the figure, the utility model comprises housing 2, cartridge filter 9, butterfly valve 10, import 1, outlet 7 and sewage draining exit 8, import 1, before outlet 7 lays respectively at housing 2, the rear end, cartridge filter 9 places housing 2 inside, butterfly valve 10 places the first half of cartridge filter 9, sewage draining exit 8 is positioned at the rear lateral portion of housing 2, cartridge filter 9 is formed with upper filter screen 91 and tube end 92 by two sections, connect with clip 5 between each filter screen, filter screen 91 is provided with handle 6, is convenient to the installation and removal of filter screen 91, tube end 92 sidepieces are provided with the hole, communicate with sewage draining exit 8, housing 2 tops are provided with manhole 3 and manhole cover 4, and manhole 3 its bores are greater than the external diameter of filter screen 91.

Under the normal condition, butterfly valve 10 is in opening, and ducted liquid is flowed into by import 1, flows out from exporting 7 by cartridge filter 9, and impurity then is trapped in the cartridge filter 9; When needs cleaning and filtering tube 9, can close butterfly valve 10, and open sewage draining exit 8, to from the mesh of filter screen 91 butterfly valve 10 before be flowed out by the liquid that import 1 flows into this moment, enter the outside of cartridge filter 9, the mesh of the filter screen 91 behind the butterfly valve 10 flows into cartridge filter 9 inside again, to cartridge filter 9 from producing backwash outside to inside, with the inwardly flushing and discharge of impurity that adheres on the mesh from sewage draining exit 8.After regular period, in the time of need unpicking and washing cartridge filter 9, take manhole cover 4 apart, unclamp clip 5, can from manhole 3, take out each section filter screen 91 easily, clean or change.

Claims

1, a kind of recoil drain filter, comprise housing (2), cartridge filter (9), butterfly valve (10), import (1), outlet (7) and sewage draining exit (8), import (1), it is preceding that outlet (7) lays respectively at housing (2), the rear end, cartridge filter (9) places housing (2) inside, butterfly valve (10) places the first half of cartridge filter (9), sewage draining exit (8) is positioned at the rear lateral portion of housing (2), communicate with cartridge filter (9), it is characterized in that described cartridge filter (9) forms with upper filter screen (91) and tube end (92) by two sections, connect with clip (5) between each filter screen, tube end (92) sidepiece is provided with the hole, communicate with sewage draining exit (8), described housing (2) top is provided with manhole (3) and manhole cover (4).

2, recoil drain filter according to claim 1 is characterized in that described filter screen (91) is provided with handle (6).

3, recoil drain filter according to claim 1 and 2 is characterized in that the external diameter of described manhole (3) bore greater than filter screen (91).