CN201295556Y

CN201295556Y - Back flush filter

Info

Publication number: CN201295556Y
Application number: CNU2008201398270U
Authority: CN
Inventors: 王松涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-16
Filing date: 2008-10-16
Publication date: 2009-08-26
Anticipated expiration: 2018-10-16

Abstract

The utility model relates to a back flush filter, comprising a filter shell, a separating plate, two filter bins and a water-sand separating drum, wherein the inside of the filter is divided into two filter bins with the same size by the separating plate; the bottom of each filter bin is provided with a craft port, and the tops of the filter bins are communicated with a water inlet pipe by two branch water pipes; a discharge pipe is connected with the branch water pipes of the water inlet pipe; the two branch water pipes of the discharge pipe are respectively provided with a back flush valve; the insides of the two filter bins are respectively provided with a flow guiding plate, and the lower part of the flow guiding plate is provided with a sand bed; and the water-sand separating drum is horizontally inserted in the middle lower part of the filter, and the two ends of the water-sand separating drum are arranged outside the filter shell, wherein one end is of a water outlet, and the other end is of a standby water outlet. The utility model has the benefits that the back flush can be realized without a filter plate and a filter cap, the structure is simple, the size is small, the fault is less, the occupied area is saved and the manufacturing cost is saved.

Description

A kind of backwash filter

Technical field

The utility model relates to a kind of sewage filter device, relates in particular to a kind of backwash filter.

Background technology

Common effluent filter often adopts screen pack and filter cap to filter main body for main at present, thereby the solid granule in the elimination sewage is to reach the purpose of purifying waste water; But be easy to cause the obstruction of filter screen along with precipitating gradually of solid particulate matter, screen pack itself gets rusty easily, and filter cap is a working of plastics, of long duration also damages easily, and antiseptic effect is not obvious.The volume of such sewage filter device is big, cost is higher, is unsuitable for extensive use.

The utility model content

The purpose of this utility model provides a kind of filter, with overcome that existing filter uses that filter screen and filter cap exist anticorrosion not thoroughly, big, the higher deficiency of manufacturing cost of volume.

The purpose of this utility model is to be achieved through the following technical solutions:

A kind of backwash filter comprises filter housing, dividing plate, filtering cabin and water sand separation tube, and the bottom of described filter housing is provided with support; Described dividing plate is divided into two filtering cabins of the same size with filtering cabin inside, described two filtering cabins bottom is equipped with the technology mouth, the top is communicated with water inlet pipe by two distributive pipe roads, be respectively equipped with inlet valve on two distributive pipe roads, blow-off pipe is connected with the distributive pipe road of water inlet pipe, is respectively equipped with the recoil valve on two laterals of blow-off pipe; Be equipped with deflector in described two filtering cabins, described deflector be located at each distributive pipe road under, the bottom of deflector is provided with the casting bed that is made of the quartz sand stone granulate; Described water sand separation tube level is interted in the middle and lower part of filter; The two ends of described water sand separation tube are located at the outside of filter housing, and an end is delivery port, and the other end is standby delivery port.

The beneficial effect of a kind of backwash filter described in the utility model is: need not filter plate and the filter cap can realize backwash, simple in structure, volume is little, fault is few, saved the occupation of land space, has saved manufacturing cost.

Description of drawings

With reference to the accompanying drawings the utility model is described in further detail below.

Fig. 1 is the main cutaway view of the described a kind of backwash filter of the utility model embodiment;

Fig. 2 is the left view of the described a kind of backwash filter of the utility model embodiment.

Among the figure:

1, filter housing; 2, dividing plate; 31, filtering cabin; 32, filtering cabin; 4, water sand separation tube; 5, support; 6, technology mouth; 7, distributive pipe road; 8, water inlet pipe; 9, inlet valve; 10, inlet valve; 11, blow-off pipe; 12, recoil valve; 13, recoil valve; 14, deflector; 15, casting bed; 16, delivery port; 17, standby delivery port.

The specific embodiment

Shown in Fig. 1-2, the described a kind of backwash filter of the utility model embodiment, comprise filter housing 1, dividing plate water sand separation tube 4, the bottom of described filter housing 1 is provided with support 5, described dividing plate 2 is divided into filtering cabin 31 of the same size and filtering cabin 32 with filtering cabin 3 inside, described filtering cabin 31,32 bottom is equipped with technology mouth 6, filtering cabin 31,32 top is communicated with water inlet pipe 8 by two distributive pipe roads 7, be respectively equipped with inlet valve 9 and inlet valve 10 on two distributive pipe roads 7, blow-off pipe 11 is connected with the distributive pipe road 7 of water inlet pipe, is respectively equipped with recoil valve 12 and recoil valve 13 on two laterals of blow-off pipe 11; Be equipped with deflector 14 in the described filtering cabin 31,32, described deflector 14 be located at each distributive pipe road 7 under, the bottom of deflector 14 is provided with the casting bed 15 that is made of the quartz sand stone granulate, described water sand separation tube 4 levels are interted in the middle and lower part of filter, the two ends of described water sand separation tube 4 are located at the outside of filter housing 1, one end of water sand separation tube 4 is a delivery port 16, and the other end is standby delivery port 17.

The described a kind of backwash filter of above the utility model embodiment, during operate as normal,

close recoil valve

12,13, open inlet valve 9,10, can adjust according to the water yield to be processed, treatment sewage injects each filtering cabin 3 inside respectively after shunting by deflector 14, after handling through quartzy casting bed 15, dirt, impurity are deposited in the casting bed 15, and clear water permeate water sand separation tube 4 is discharged for use by outlet pipe; During as the dirt of need cleanings filtering cabin 31, impurity, close inlet valve 9 and open recoil valve 12, or open recoil valve 13 and close inlet valve 10, realize that by water adverse current in filtering cabin 32 storehouses recoil effect discharges dirt and impurity by blow-off pipe 11.

Claims

1, a kind of backwash filter comprises filter housing (1), dividing plate (2), filtering cabin (3) and water sand separation tube (4), and the bottom of described filter housing (1) is provided with support (5); It is characterized in that: described dividing plate (2) is divided into filtering cabin of the same size (31) and filtering cabin (32) with filter interior, and the bottom of described filtering cabin (31), filtering cabin (32) is equipped with technology mouth (6); The top of filtering cabin (31,32) is communicated with water inlet pipe (8) by two distributive pipe roads (7), be respectively equipped with inlet valve (9) and inlet valve (10) on two distributive pipe roads (7), blow-off pipe (11) is connected with the distributive pipe road (7) of water inlet pipe, is respectively equipped with recoil valve (12) and recoil valve (13) on two laterals of blow-off pipe (11); Be provided with deflector (14) under the described distributive pipe road (7), the bottom of deflector (14) is provided with the casting bed (15) that is made of the quartz sand stone granulate, and described water sand separation tube (4) level is interted in the middle and lower part of filter; The two ends of described water sand separation tube (4) all are located at the outside of filter housing (1), and water sand separation tube (4) one ends are delivery port (16), and water sand separation tube (4) other end is standby delivery port (17).