CN203648218U

CN203648218U - Filter backwash device

Info

Publication number: CN203648218U
Application number: CN201320840172.0U
Authority: CN
Inventors: 王建宇; 叶忠
Original assignee: Sichuan High Accurate Purification Equipment Co Ltd
Current assignee: Sichuan High Accurate Purification Equipment Co Ltd
Priority date: 2013-12-17
Filing date: 2013-12-17
Publication date: 2014-06-18
Anticipated expiration: 2023-12-17

Abstract

The utility model discloses a filter backwash device which comprises a filter element, wherein gaps are formed between the filter element and the side wall of a shell and between the filter element and a middle disc; the gaps are communicated to form a filtrate cavity; a filtrate outlet is formed in the upper part of the shell and is communicated with the filtrate cavity; the filter element is fixed on the middle disc of a filter; the middle disc is arranged on a spindle in a sleeving manner; the spindle is connected with a driving device; the driving device is arranged on the top of the shell; a filtrate inlet is formed in the lower part of the shell; the filtrate inlet is communicated with the filter element; a drain outlet is formed in the bottom of the shell and is connected with a solenoid valve; a differential pressure controller is arranged in the shell; a backwash device is arranged on the middle disc and is connected with a pulse controller unit; the pulse controller unit is connected with the driving device. The backwash device is connected with the pulse controller unit, so that the backwash water amount, backwash frequency and backwash flushing strength can be regulated according to actual backwash conditions. Therefore, the filtering efficiency of the filter is improved, the use amount of water for flushing dirt is reduced, and the backwash sewage disposal amount is further reduced.

Description

A kind of back purge system of filter

Technical field

The utility model relates to a kind of filter, relates in particular to a kind of back purge system of filter.

Background technology

Filtration belongs to indispensable processing means in water purification process, for tackling the impurity of water, with purify water or protection system in the normal work of other equipment.Common well strainer is because of its good filtration effect, the little fields such as water source filtration, industrial circulating water system that are widely used in of resistance, but that its shortcoming is pollutant holding capability is little, be subject to that dirt stops up, cleaning complexity, must dismantle the cleaning that could realize filtration fraction to equipment, state that cannot monitor filter, and be affected by human factors greatlyr, make the automaticity of whole system very low.There is at present full-automatic back washing filter filtered and automatically filter core was cleaned blowdown function to former water, while cleaning blowdown, system uninterruptedly supplies water, the water yield that such cleaning device need to use is large, in the process of filtration, purification water quality, also greatly increase the output of sewage, the relative filter operating efficiency that also reduced.

Summary of the invention

The utility model provides a kind of back purge system of filter, and object is to solve prior art problem, provides one can effectively remove dirt, can save in a large number again the back purge system of a kind of filter at water source.

The utility model deal with problems adopt technical scheme be:

A kind of back purge system of filter, there is filter core, between the sidewall of filter core and housing and telophragma, be provided with gap, gap UNICOM composition filtrate chamber, the top of housing is provided with filtrate (liquid, filtrate (liquid and filtrate chamber UNICOM, filter core is fixed on the telophragma of filter, telophragma is set on main shaft, main shaft connecting drive device, drive unit is located at the top of filter housings, the bottom of housing is provided with filtrate import, filtrate import and filter core UNICOM, the bottom that sewage draining exit is located at housing is connected with magnetic valve, in housing, be provided with differential pressure controller, telophragma is provided with back purge system, it is characterized in that: described back purge system connects impulse controller unit, impulse controller unit connecting drive device.

Described impulse controller unit is provided with gauge tap, and switch connects pulse output unit.

Described pulse output unit output frequency regulating impulse control signal or peak pulse duration regulating impulse control signal.

The beneficial effects of the utility model: because the utility model connects back purge system the impulse controller unit of adjustable control, can regulate according to the actual conditions of backwash the water yield of backwash, the dynamics of washing away of the frequency of backwash and backwash, thereby improve the filter efficiency of filter, reduce the use of the water yield of rinsing dirt, and then reduce the sewage eliminating amount of backwash.

Brief description of the drawings

Fig. 1 is sectional structure chart of the present utility model.

In figure: 1, filter core; 2, telophragma; 3, main shaft; 4, drive unit; 5, housing; 6, filtrate import; 7, filtrate (liquid; 8, sewage draining exit; 9, magnetic valve; 10, differential pressure controller; 11, back purge system; 12, impulse controller unit; 13, filtrate chamber.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

A kind of back purge system of filter as shown in Figure 1, there is filter core 1, between the sidewall of filter core 1 and housing 5 and telophragma 2, be provided with gap, gap UNICOM composition filtrate chamber 13, the top of housing 5 is provided with filtrate (liquid 7, filtrate (liquid 7 and filtrate chamber 13 UNICOMs, filter core 1 is fixed on the telophragma 2 of filter, telophragma 2 is set on main shaft 3, main shaft 3 connecting drive devices 4, drive unit 4 is located at the top of filter housings 5, the bottom of housing 5 is provided with filtrate import 6, filtrate import 6 and filter core 1 UNICOM, the bottom that sewage draining exit 8 is located at housing 5 is connected with magnetic valve 9, in housing 5, be provided with differential pressure controller 10, telophragma 2 is provided with back purge system 11, described back purge system 11 connects impulse controller unit 12, impulse controller unit 12 connecting drive devices 4.

Described impulse controller unit 12 is provided with gauge tap, and switch connects pulse output unit.

Described pulse output unit 12 output frequency regulating impulse control signals or peak pulse duration regulating impulse control signal.

Along with the carrying out of filter process, the impurity that is trapped in cartridge surface will increase, and causes water filter water inlet and delivery port pressure differential to increase, and utilizes the setting value of differential pressure controller 10 to measure the chocking-up degree of filter core, provide the signal of telecommunication simultaneously, realize mechanism's automated cleaning.The setting value of differential pressure controller can be adjusted according to actual needs.

When just having started to filter, the pressure in the filter core chamber of filter keeps constant substantially, liquid outwards flows from the inner chamber of filter core 1, along with the carrying out of the work of filtration, the entrained solid impurity inner surface at filter core that dammed, cause that interior exocoel pressure reduction raises, filtration resistance increases gradually, in the time that interior exocoel pressure reduction exceedes a certain setting value of differential pressure controller, differential pressure controller sends signal, control electric motor starting, drive drive unit 4 to move, drive unit 4 drives back purge system 11 to turn round, by regulating back purge system 11 water yields, the dynamics of washing away of the frequency of backwash and backwash, the inner chamber of whole filter core is rinsed well, in clean, opening sewage draining exit 8 gets rid of the dirt rinsing from magnetic valve 9.

Claims

1. the back purge system of a filter, there is filter core, between the sidewall of filter core and housing and telophragma, be provided with gap, gap UNICOM composition filtrate chamber, the top of housing is provided with filtrate (liquid, filtrate (liquid and filtrate chamber UNICOM, filter core is fixed on the telophragma of filter, telophragma is set on main shaft, main shaft connecting drive device, drive unit is located at the top of filter housings, the bottom of housing is provided with filtrate import, filtrate import and filter core UNICOM, the bottom that sewage draining exit is located at housing is connected with magnetic valve, in housing, be provided with differential pressure controller, telophragma is provided with back purge system, it is characterized in that: described back purge system connects impulse controller unit, impulse controller unit connecting drive device.

2. a kind of back purge system of filter as claimed in claim 1, is characterized in that: described impulse controller unit is provided with gauge tap, and switch connects pulse output unit.

3. a kind of back purge system of filter as claimed in claim 2, is characterized in that: described pulse output unit output frequency regulating impulse control signal or peak pulse duration regulating impulse control signal.