CN211384059U - Vertical back flush filter - Google Patents

Abstract

The utility model relates to a sewage filter device discloses a vertical back flush filter very much. The water-saving filter comprises a tank body, wherein a water inlet pipe and a water drain pipe are arranged on the tank body, a primary filter screen and a secondary filter screen are arranged in the tank body, an inlet pipe is arranged at the upper end of the tank body, the secondary filter screen is in a three-way pipe shape consisting of a straight pipe and a branch pipe, the lower end of the straight pipe is blocked, the straight pipe is in threaded connection with the upper end of the tank body, and the branch pipe is; an access door is arranged on the tank body corresponding to the straight pipe; a backwashing pipe is arranged on the water inlet pipe and is movably connected with the inlet pipe; a fine filter screen is arranged in the backwashing pipe; and valves are respectively arranged on the water inlet pipe and the backwashing pipe. The utility model discloses need not shut down when clearance impurity, do not hinder sewage treatment, effectively improved sewage treatment efficiency to the design of meticulous filter screen, access door also makes the maintenance more convenient.

Description

Vertical back flush filter

Technical Field

The utility model relates to a sewage filter equipment, in particular to vertical back flush filter.

Background

The filter is a water treatment filtering device, is used as the last barrier in the water treatment process and plays a role in ensuring that the drained water meets the standard requirements. The water treatment filter equipment who uses at present all has one-level filter screen and second grade filter screen usually, and the one-level filter screen filters than great impurity in the sewage, and the tiny granule in the sewage is filtered to the second grade filter screen, and the impurity of crossing filters is discharged through the blow off pipe of jar body lower extreme, but the blowdown process must be shut down, has influenced production efficiency, in addition the blowdown process, and some adhesion impurity particles on the filter screen are not easy to discharge.

Disclosure of Invention

The utility model provides a vertical backwashing filter which does not need to be shut down and discharges sewage thoroughly, in order to make up the defects of the prior art.

The utility model discloses a realize through following technical scheme:

the utility model provides a vertical back flush filter, includes a jar body, jar internal inlet tube and the drain pipe of being equipped with, jar internal one-level filter screen and the second grade filter screen of being equipped with, characterized by: the upper end of the tank body is provided with an inlet pipe, the secondary filter screen is in a three-way pipe shape consisting of a straight pipe and a branch pipe, the lower end of the straight pipe is blocked, the straight pipe is in threaded connection with the upper end of the tank body, and the branch pipe is inserted in a drainage pipe; an access door is arranged on the tank body corresponding to the straight pipe; a backwashing pipe is arranged on the water inlet pipe and is movably connected with the inlet pipe; a fine filter screen is arranged in the backwashing pipe; and valves are respectively arranged on the water inlet pipe and the backwashing pipe.

The tank body is provided with an access hole, and the access hole is positioned below the access door.

And a sewage discharge pipeline is arranged at the lower end of the tank body.

The water inlet pipe and the back flushing pipe are connected through a flange.

The flange comprises an upper flange and a lower flange; the fine filter screen is provided with a flange, and the flange is clamped between the upper flange and the lower flange.

The straight pipe is inserted with the branch pipe.

The utility model has the advantages that:

normally, a valve on the backwashing filter screen is closed, sewage enters the tank body through the water inlet pipe for filtering, when the primary filter screen and the secondary filter screen need to be cleaned, the valve on the water inlet pipe is closed, the valve on the backwashing pipe is opened, a sewage discharge pipeline below the tank body is opened, the sewage is successfully filtered once through the fine filter screen from the backwashing pipe, enters the tank body from the backwashing pipe through the inlet pipe, and one part of the sewage passes through the secondary filter screen and the primary filter screen downwards in sequence, so that impurities adhered to the two filter screens are forcibly washed and then discharged from the sewage discharge pipeline; the other part is normally discharged from the drain pipe. After a period of flushing, the valves on the sewage discharge pipeline and the backwashing pipe are closed, and the sewage is filtered by the primary filter screen and the secondary filter screen and then is normally discharged. The utility model discloses need not shut down when clearance impurity, do not hinder sewage treatment, effectively improved sewage treatment efficiency to the design of meticulous filter screen, access door also makes the maintenance more convenient.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 2 at A;

fig. 4 is an enlarged schematic view of a portion B in fig. 2.

In the figure, 1 tank body, 2 first-stage filter screens, 3 water inlet pipes, 4 water outlet pipes, 5 second-stage filter screens, 501 straight pipes, 502 branch pipes, 6 access holes, 7 access doors, 8 threaded pipes, 9 lower flanges, 10 upper flanges, 11 fine filter screens, 111 flanges, 12 backwashing pipes, 13 valves, 14 inlet pipes and 15 sewage discharge pipelines.

Detailed Description

The attached drawings are specific embodiments of the invention. As shown in fig. 1 to 4, the vertical backwashing filter comprises a tank body 1, wherein a water inlet pipe 3 and a water outlet pipe 4 are installed on the tank body 1, the water inlet pipe 3 is arranged below the water outlet pipe 4, a second-stage filter screen 5 is installed in the tank body 1, the second-stage filter screen 5 is positioned above an outlet of the water inlet pipe 3, a first-stage filter screen 2 is installed below the second-stage filter screen 5, and the upper end of the first-stage filter screen 2 is positioned above a water inlet of the water inlet pipe 3; the inlet pipe 3 is provided with a back-flushing pipe 12 through a flange, and the back-flushing pipe 12 is installed in a way that: a lower flange 9 is welded on a water inlet pipe 3, the lower end of a back flushing pipe 12 is integrally manufactured into an upper flange 10, then a fine filter screen 11 is installed in the lower flange 9, the mesh number of the fine filter screen 11 is the same as that of a secondary filter screen 5, even the fine filter screen is thinner, the fine filter screen 11 is funnel-shaped, the upper end of the fine filter screen extends outwards to form a flange 111, the flange 111 is clamped between the lower flange 9 and the upper flange 10, a valve 13, a manual valve and an electromagnetic valve are respectively installed on the water inlet pipe 3 and the back flushing pipe 12, the upper end of the back flushing pipe 12 is movably connected with an inlet pipe 14 after being bent, the disassembly and the maintenance are convenient, and the inlet pipe 14 is welded at the.

A threaded pipe 8 is welded to the upper end of the interior of the tank 1 opposite to the inlet pipe 14. The secondary filter screen 5 is in a three-way pipe shape and comprises a straight pipe 501 and a branch pipe 502, the straight pipe 501 and the branch pipe 502 can be connected by threads carried by the straight pipe 501 and can also be connected by loose joint threads, when the secondary filter screen is installed, the branch pipe 502 is firstly inserted into the drain pipe 4 from the inside to the outside, then the straight pipe 501 is screwed on the threaded pipe 8, and then the branch pipe 502 is partially drawn into the pipe and screwed together with the straight pipe 501; certainly, the straight pipe 501 and the branch pipe 502 can be inserted, so that the insertion end of the straight pipe 501 is in a bell mouth shape to facilitate insertion, then the outer end of the branch pipe 502 is turned outwards and inserted inwards from the drain pipe 4 to be inserted into the straight pipe 501, and then the turned part is pressed by the flange part of the drain pipe 4; the lower end of the straight pipe 501 is plugged, and the upper end is in threaded connection with the threaded pipe 8.

An access door 7 and an access hole 6 are respectively arranged on the tank body 1, the access door 7 faces the secondary filter screen 5, and the access hole 6 is positioned below the access door 7.

A sewage discharge pipeline 15 is arranged below the tank body 1 and is used for discharging impurities filtered by the primary filter screen 2.

Under the condition of normal sewage treatment, the valve 13 on the sewage discharge pipeline 15 and the backwashing pipe 12 is closed, the valve 13 on the water inlet pipe 3 is opened, the sewage enters the tank body 1 from the water inlet pipe 3 and is discharged from the water discharge pipe 4 after being filtered by the primary filter screen 2 and the secondary filter screen 5, which is a normal working condition, when the sewage on the primary filter screen 2 and the secondary filter screen 5 needs to be cleaned, the valve 13 on the sewage discharge pipeline 15 and the backwashing pipe 12 is opened, the valve 13 on the water inlet pipe 3 is closed, the sewage does not enter the tank body 1 through the water inlet pipe 3, but enters the tank body 1 from the backwashing pipe 12 and the inlet pipe 14 after being filtered by the fine filter screen 11, one part of the sewage passes through the secondary filter screen 5 and the primary filter screen 2 downwards in sequence, the sewage adhered to the two filter screens is flushed, the flushed water after being discharged from the sewage discharge pipeline 15, is discharged from the water discharge pipe 4, does not delay the normal treatment of the sewage while cleaning the sewage, is convenient, quick and efficient, and is easy to maintain through the access door 7, the access hole 6 and the disassembly of the back washing pipe 12.

Other technical features than those described in the specification are known to those skilled in the art.

Claims (6)

1. The utility model provides a vertical back flush filter, includes a jar body (1), be equipped with inlet tube (3) and drain pipe (4) on jar body (1), be equipped with one-level filter screen (2) and second grade filter screen (5), characterized by in jar body (1): an inlet pipe (14) is arranged at the upper end of the tank body (1), the secondary filter screen (5) is in a three-way pipe shape consisting of a straight pipe (501) and a branch pipe (502), the lower end of the straight pipe (501) is blocked, the straight pipe (501) is in threaded connection with the upper end of the tank body (1), and the branch pipe (502) is inserted in the drain pipe (4); an access door (7) is arranged on the tank body (1) corresponding to the straight pipe (501); a back flushing pipe (12) is arranged on the water inlet pipe (3), and the back flushing pipe (12) is movably connected with the inlet pipe (14); a fine filter screen (11) is arranged in the backwashing pipe (12); the water inlet pipe (3) and the backwashing pipe (12) are respectively provided with a valve (13).

2. A vertical backwash filter according to claim 1, wherein the tank (1) is provided with an access hole (6), the access hole (6) being located below an access door (7).

3. A vertical backwash filter according to claim 1, wherein the tank (1) is provided at its lower end with a drain (15).

4. A vertical backwash filter according to claim 1, characterized in that the inlet pipe (3) and the backwash pipe (12) are connected by a flange.

5. A vertical backflush filter according to claim 4, wherein the flanges comprise an upper flange (10) and a lower flange (9); the fine filter screen (11) is provided with a flange (111), and the flange (111) is clamped between the upper flange (10) and the lower flange (9).

6. The vertical backwash filter according to claim 1, wherein the straight pipe (501) is in threaded connection with the branch pipe (502).

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