CN210845485U

CN210845485U - Spiral-flow type backwashing filter

Info

Publication number: CN210845485U
Application number: CN201920905721.5U
Authority: CN
Inventors: 杜蓬
Original assignee: Tianjin Abn Mechanical And Electrical Equipment Co ltd
Current assignee: Tianjin Abn Mechanical And Electrical Equipment Co ltd
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-06-26
Anticipated expiration: 2029-06-17

Abstract

The utility model relates to an adopt spiral-flow type back flush filter of spiral-flow back flush mode belongs to the filtration technology field. Can carry out the high accuracy with the impurity in the fluid and filter, equipment possess filter screen operation detecting system, can in time know whether the filter screen blocks up. In the back washing process, the filter barrel is driven by a power source to rotate at a high speed, small flow blocking pieces on the filter barrel and large flow blocking pieces on a filter shell form disordered rotational flows rotating at a high speed, and stubborn impurities blocked in the filter screen are removed under the drive of a back washing force. Effectively protects the precision of the filter screen, prolongs the service life and is suitable for high-precision filter screens.

Description

Spiral-flow type backwashing filter

The technical field is as follows:

the utility model relates to an adopt novel filter of whirl back flush mode belongs to the filtration technology field. It can filter the impurity in the fluid with high precision. The system is provided with a filter screen running state detection system, and the filter screen is backwashed in a rotational flow mode after being blocked.

Background art:

at present, three methods for backwashing a filter are provided, wherein the filter screen is washed at a high speed through water flow to separate impurities on the filter screen; injecting compressed air into the filter to enable impurities to float on the water surface and then to be washed and removed; the high-speed water flow is sprayed out through the nozzle and then the washing is carried out. The method can cause unclean flushing of stubborn impurities and damage to the filter screen due to excessive water flow and air pressure, so that the precision of the filter screen is reduced.

The invention content is as follows:

the utility model discloses a method of spiral-flow type back flush makes the impurity of stubborn absorption on the filter screen drop with the combined action of the lateral force that high-speed whirl produced and backwash power, reaches the mesh of back flush. Cleaning medium enters from a back washing port above the tank body, a power source generated by a motor drives the filter barrel to rotate at a high speed, small flow blocking pieces on the filter barrel and large flow blocking pieces on a filter shell form disordered rotational flows rotating at a high speed, strong lateral force is formed on the outer surface of the filter barrel, and the filter screen is repeatedly washed under the action of back washing force, so that stubborn impurities on the filter screen are effectively separated.

The oil filter consists of a power device, a filtering system, a back flushing system, a pressure detection system and a sewage discharge system.

The function of the components:

a power device: power source produced by rotational flow

A filtering system:

1. ball valve: control the on-off and switching of the pipeline

2. Filtering with a filter screen: isolating impurities in a fluid

A backwashing system:

1. ball valve: control the on-off and switching of the pipeline

2. Spoiler: (1)6 small flow-blocking pieces generate rotational flow (2)2 large flow-blocking pieces disturb inherent rotational flow to form turbulent flow

The pressure detection system comprises: detecting pressure and pressure difference at two sides of filter screen

A sewage draining system: discharging the impurities after back washing

The utility model has the advantages of carry out the efficient back flush to the impurity of stubborn absorption on the filter screen, different with the mode of traditional back flush, the comprehensive action that the lateral force that this equipment adopted high-speed whirl to produce and the backwash force made the impurity of stubborn absorption on the filter screen drop, and the filter fineness of filter screen is unchangeable, the effectual quality of protecting the filter screen can keep the high-efficient filtration flux of filter screen, prolongs the life of filter screen, specially adapted high accuracy filter screen.

The working process is as follows:

with reference to FIG. 1

Before normal operation, the

ball valves

1 and 2 are opened, and the

ball valves

3 and 4 are closed. Fluid enters the equipment from the opened ball valve 1, passes through the filter screen, so that the filtered fluid without impurities is transmitted to the ball valve 2 from the pipeline 9 and is discharged, and the

ball valves

1 and 2 are closed after the filtration is finished; when the pressure difference generated by the two pressure gauges 6 reaches a certain value, the filter screen is proved to be blocked, and the equipment is required to be backwashed in time.

Close ball valve

1, 2,

open ball valve

3, 4, make the flushing medium get into from ball valve 3, it is internal to carry to pipeline 9 entering jar, the power source that relies on motor 7 to produce drives the bearing, make 5 high-speed rotations of lauter tub, make the small spoiler 10 on the lauter tub and the big spoiler 11 on the filter casing form the disorderly whirl of high-speed rotation, form very strong side power to the surface of lauter tub, make the stubborn impurity of depending on the filter screen effectively get rid of under the effect of backwash power, the impurity of washout of recoil is discharged by ball valve 4.

Description of the drawings:

FIG. 1: complete system working diagram

FIG. 2: front view of spiral-flow type backwashing filter

FIG. 3: top view of spiral-flow type back-washing filter

FIG. 4: top view sectional view A-A of spiral-flow type back-washing filter

Wherein

In the attached fig. 2: 1. a filter inlet 2, a filter outlet 3, a backwash inlet 4, a backwash sewage discharge outlet 5, a tank body 6, a pressure gauge 7, a motor 8, supporting feet

In fig. 4: 9. the tank cover 10, the filter screen 11, the large spoiler 12, the small spoiler 13, the sealing element 14 and the rotary bearing

The specific implementation mode is as follows:

as shown in the attached figure 2, 1, a ball valve in the middle of the spiral-flow type backwashing filter is connected with a fluid outlet of other equipment, and an upper ball valve is connected with a fluid inlet of other equipment. 2. When the tank body is manufactured, a winding drum is taken, holes are formed in corresponding positions, and corresponding pipelines are welded. 3. 4 supporting legs are manufactured, so that a certain space is reserved between the tank body and the ground. 4. The pressure gauges are respectively arranged in the tank body and at the filtering outlet.

As shown in figure 4, 1, the size of the can body cover is adapted to the size of the can body below when the can body cover is manufactured. 2. 6 small flow blocking sheets are welded on the outer side of the filter barrel, and 2 large flow blocking sheets are welded on the inner side of the tank body.

Claims

1. A spiral-flow type backwashing filter comprises a filtering inlet, a filtering outlet, a backwashing inlet, a backwashing sewage outlet, a large flow blocking sheet, a small flow blocking sheet, a tank body cover, a pressure gauge, a motor, a rotating bearing, a filter screen, supporting legs and a sealing piece.

2. The spiral-flow type backwashing filter of claim 1, wherein the pressure gauge is used for proving that the filter screen is blocked when the pressure difference generated by the two pressure gauges reaches a certain value, and backwashing of the equipment is carried out in time.

3. The spiral-flow type back-washing filter as claimed in claim 1, wherein the filter mesh is designed to isolate impurities in the fluid.

4. The spiral-flow type backwashing filter of claim 2, wherein the backwashing is performed by backwashing the device when the filter screen is clogged, so that the washing medium is delivered into the tank from the backwashing inlet, the power unit is used to rotate the filter tank at a high speed, and the small flow-blocking pieces welded outside the filter tank and the large flow-blocking pieces welded in the tank form a disordered spiral-flow disturbance rotating at a high speed, thereby forming a strong lateral force on the outer surface of the filter tank, removing stubborn impurities attached to the filter screen under the action of the backwashing force, and finally discharging the impurities from the backwashing sewage outlet.