CN219355433U

CN219355433U - Self-cleaning filter device

Info

Publication number: CN219355433U
Application number: CN202320032272.4U
Authority: CN
Inventors: 顾丹童; 葛慧钰; 程健
Original assignee: Jiangsu Nantong Shentong Machinery Co ltd
Current assignee: Jiangsu Nantong Shentong Machinery Co ltd
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-07-18
Anticipated expiration: 2033-01-06

Abstract

The utility model discloses a self-cleaning filtering device, which comprises a shell; the shell is divided into a lower cavity, a middle cavity and an upper cavity; the lower cavity is provided with a water inlet and a slag discharge port; a filter screen and a spiral impeller set are arranged in the lower cavity; the spiral impeller group is driven by the driving device to rotate; the lower cavity is divided into a pre-filter cavity and a post-filter cavity by a filter screen; the post-filtration cavity is provided with a primary filtrate outlet; the primary filtrate outlet is communicated with the middle cavity through a connecting pipeline; a plurality of filter elements are arranged in the upper cavity; the water inlet at the bottom of the filter element is communicated with the middle cavity; the middle cavity is a back flushing cavity. The utility model prolongs the service life of the filter element.

Description

Self-cleaning filter device

Technical Field

The utility model relates to a seawater filtering system, in particular to a self-cleaning filtering device.

Background

The filtering belongs to an indispensable treatment means in the water treatment process and is used for intercepting impurities in the water so as to protect the normal operation of other equipment in the system. The existing filter has good filtering effect and small resistance, but the filter element is easy to be blocked by dirt when the existing filter device is used for filtering.

Patent No. 202021950749.X discloses a novel full-automatic self-cleaning filter which realizes full-automatic self-cleaning of a filter cartridge, and the filter cannot realize classification filtration and fine filtration.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a self-cleaning filter device, which realizes graded filtration and prolongs the service life of a filter element.

In order to solve the technical problems, the utility model adopts the following technical scheme: a self-cleaning filter device comprises a shell; the shell is divided into a lower cavity, a middle cavity and an upper cavity; the lower cavity is provided with a water inlet and a slag discharge port; a filter screen and a spiral impeller set are arranged in the lower cavity; the spiral impeller group is driven by the driving device to rotate; the lower cavity is divided into a pre-filter cavity and a post-filter cavity by a filter screen; the post-filtration cavity is provided with a primary filtrate outlet; the primary filtrate outlet is communicated with the middle cavity through a connecting pipeline; a plurality of filter elements are arranged in the upper cavity; the water inlet at the bottom of the filter element is communicated with the middle cavity; the middle cavity is a back flushing cavity.

Further, a cleaning rod is arranged in the lower cavity; a hairbrush is arranged on one surface of the cleaning rod, which is contacted with the filter screen; the both ends and the lower part cavity sliding connection of clean pole, and clean pole is fixed on spiral impeller group.

Further, the back flushing cavity is connected with a back flushing pipe; the back flushing pipe is provided with a first switch valve; the connecting pipeline is provided with a second switch valve; the drain pipe connected with the upper cavity is provided with a third switch valve.

Further, a circulating pump is arranged on the back flushing pipe.

Further, the slag discharging opening is connected with a slag discharging cavity.

The beneficial effects of the utility model are as follows:

the utility model overcomes the defects of small sewage containing amount, easy blockage by sewage and disassembly and cleaning of the filtering part of the traditional filtering product, and has the functions of carrying out multistage filtration on raw water and automatically cleaning and discharging sewage on a filter screen and a filter element.

Drawings

The utility model is further described below with reference to the drawings and examples.

Fig. 1 is a schematic structural view of the present utility model.

Detailed Description

The technical scheme of the present utility model will be clearly and completely described in the following detailed description.

Example 1

Referring to fig. 1, a self-cleaning filter device of the present utility model comprises a housing 1; the shell 1 is divided into a lower cavity, a middle cavity and an upper cavity; the lower cavity is provided with a water inlet 11 and a slag discharge port 12; the slag discharging port 12 is connected with the slag discharging cavity 24 through a valve body. A filter screen 13 and a spiral impeller set 14 are arranged in the lower cavity; the spiral impeller set 14 is driven to rotate by a driving device; the lower cavity is divided into a pre-filter cavity and a post-filter cavity by a filter screen 13; the post-filtration cavity is provided with a primary filtrate outlet; the primary filtrate outlet is communicated with the middle cavity through a connecting pipeline 19; a plurality of filter elements 15 are arranged in the upper cavity; the water inlet at the bottom of the filter element 15 is communicated with the middle cavity; the middle cavity is a back flushing cavity. The back flush cavity is connected with a back flush pipe 16; the back flushing pipe 16 is provided with a first switch valve 20; the connecting pipeline 19 is provided with a second switch valve 21; the drain pipe 22 connected with the upper cavity is provided with a switch valve III 23. The backwash pipe 16 is provided with a circulation pump 25.

When the filtering device of the embodiment is used, primary filtering is firstly carried out in the lower cavity, large-volume impurities and the like in water are filtered by the filter screen, and filter residues can be discharged periodically through the residue discharge port.

The water after primary filtration enters the middle cavity and is discharged after being filtered by the filter element of the upper cavity.

In the embodiment, the filter screen and the filter element can be jacked and cleaned, when the filter screen and the filter element are cleaned, the first switch valve 20 is arranged on the back flushing pipe 16, the third switch valve 23 on the drain pipe and the second switch valve 21 on the connecting pipeline 19 are closed, the circulating pump 25 connected in parallel on the back flushing pipe 16 is opened, water in the back flushing cavity is back flushed on the filter element through the upper cavity by the back flushing pipe 16, and the water after flushing enters the back flushing cavity to be repeatedly performed.

Example 2

The cleaning rod 17 is arranged in the lower cavity of the embodiment; a hairbrush 18 is arranged on one surface of the cleaning rod, which is contacted with the filter screen 13; the cleaning rod 17 is slidably connected to the lower chamber at both ends and is fixed to the screw impeller assembly 14.

In this embodiment, the cleaning rod 17 is driven to clean the filter screen online when the spiral impeller assembly 14 rotates.

The foregoing description of the preferred embodiments of the present utility model is not intended to limit the utility model, and those skilled in the art may make various modifications and equivalents within the spirit and scope of the utility model, and such modifications and equivalents should also be considered as falling within the scope of the technical solution of the present utility model.

Claims

1. A self-cleaning filter device, characterized in that: comprises a shell (1); the shell (1) is divided into a lower cavity, a middle cavity and an upper cavity; the lower cavity is provided with a water inlet (11) and a slag discharging port (12); a filter screen (13) and a spiral impeller set (14) are arranged in the lower cavity; the spiral impeller group (14) is driven by a driving device to rotate; the lower cavity is divided into a pre-filter cavity and a post-filter cavity by a filter screen (13); the post-filtration cavity is provided with a primary filtrate outlet; the primary filtrate outlet is communicated with the middle cavity through a connecting pipeline (19); a plurality of filter elements (15) are arranged in the upper cavity; a water inlet at the bottom of the filter element (15) is communicated with the middle cavity; the middle cavity is a back flushing cavity.

2. A self-cleaning filter apparatus as defined in claim 1, wherein: a cleaning rod (17) is arranged in the lower cavity; a hairbrush (18) is arranged on one surface of the cleaning rod, which is contacted with the filter screen (13); the two ends of the cleaning rod (17) are connected with the lower cavity in a sliding way, and the cleaning rod is fixed on the spiral impeller set (14).

3. A self-cleaning filter apparatus as defined in claim 1, wherein: the back flushing cavity is connected with a back flushing pipe (16); the back flushing pipe (16) is provided with a first switch valve (20); a second switch valve (21) is arranged on the connecting pipeline (19); the drain pipe (22) connected with the upper cavity is provided with a switch valve III (23).

4. A self-cleaning filter apparatus as defined in claim 3, wherein: the back flushing pipe (16) is provided with a circulating pump (25).

5. A self-cleaning filter apparatus as defined in claim 1, wherein: the slag discharging opening (12) is connected with a slag discharging cavity (24).