CN2737448Y

CN2737448Y - Differential pressure full automatic pollution discharge filter

Info

Publication number: CN2737448Y
Application number: CN 200420072366
Authority: CN
Inventors: 刘贤其
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-08-06
Filing date: 2004-08-06
Publication date: 2005-11-02
Anticipated expiration: 2014-08-06

Abstract

The utility model discloses a differential pressure full automatic pollution discharge filter. The utility model is composed of a cylindrical shell and a water inlet, a water outlet and a pollution discharge port simultaneously arranged on the cylindrical shell. A filter screen is arranged in the shell. The water inlet and water outlet are respectively equipped with a water-inlet pressure measuring port and a water-outlet pressure measuring port. The water-inlet pressure measuring port communicates with the water-outlet pressure measuring port by a differential pressure controller. The pollution discharge port and the front end of the shell are respectively equipped with a pollution discharge actuator and a backwashing actuator. The pollution discharge actuator and the backwashing actuator are respectively connected with the differential pressure controller. The differential pressure full automatic pollution discharge filter has multiple advantages of high automation degree, a small installing volume, a large filter area, convenient usage, high utility ratio, etc. The utility model can dislodge various impurities in medium and can be extensively used for various canal water systems of circulating water, industrial water preconditioning, domestic water, etc.

Description

Differential full-automatic drain filter

Technical field

The utility model relates to a kind of drain filter that is used to remove impurity in the liquid, particularly a kind of differential full-automatic drain filter.

Background technology

In various duct type water treatment systems such as recirculated water, preliminary treatment water for industrial use, domestic water, because impurity and water are to Corrosion of Pipeline in the water, making often has dirt and impurity in the pipeline, thereby has influence on the service life of the unobstructed and pipeline of pipeline.In above-mentioned water treatment system pipeline, filter is not set all generally at present, dirt and impurity not only cause corrosion and infringement to pipeline, also can have influence on the water quality of the water that send, thereby have influence on industrial production and people's health.Also have in some water supply lines and adopt filter, but these filters do not have the function of automatic detection dirt, need manually filter is pulled down removing when dirt reaches certain degree, very trouble, can not reach timely cleaning, also can cause the filter pipeline to accumulate impurity and obstruction.Simultaneously in filter rinsed, also need stop to supply water, for producing and life is made troubles.

Summary of the invention

At the deficiencies in the prior art, the utility model provide a kind of simple in structure, installation volume is little, filter area is big, differential full-automatic drain filter easy to use, that utility ratio is high.

In order to achieve the above object, the utility model is achieved by the following technical solutions: a kind of differential full-automatic drain filter, by a columniform housing and set up thereon water inlet, delivery port and sewage draining exit to constitute simultaneously, be provided with screen pack in the described housing; Described water inlet and delivery port place are provided with intake pressure respectively and measure mouth and discharge pressure mensuration mouth, are linked by differential pressure controller between the two; Described sewage draining exit place and housing front end are respectively arranged with blowdown actuator and backwash actuator, and this blowdown actuator is connected with differential pressure controller respectively with the backwash actuator.

Above-mentioned differential full-automatic drain filter, described screen pack are cylindric, with described cylindrical shell be the concentric circles of different radii.

Owing to adopted technique scheme, differential full-automatic drain filter of the present utility model has following beneficial effect:

(1) need not to cut off the water, pressure monitor on-line Fullly finishes that filtration, recoil are removed contamination, the blowdown overall process, need not management cost, and simultaneously can be because of cutting off the water to producing and life not impact.

(2) dirt instant blowdown of when alluvial is arranged, can energy saving; Need not blowdown during the alluvial of no dirt, it is economical to economize on water, and can reduce the blowdown cost.

(3) simple in structure, installation volume is little, and is cheap, cost performance height, cost-recovering rapidly.

Description of drawings

Fig. 1 is the structural representation of the differential full-automatic drain filter of the utility model.

Fig. 2 is the structural representation of the differential full-automatic drain filter of another kind of structure.

The specific embodiment

Below in conjunction with the drawings and specific embodiments differential full-automatic drain filter of the present utility model is described in further detail.

As depicted in figs. 1 and 2, differential full-automatic drain filter of the present utility model comprises a columniform housing 9, on housing 9, be provided with water inlet 1, delivery port 3 and sewage draining exit 10 simultaneously, in housing 9, be provided with screen pack 2, this screen pack 2 also is cylindric, with cylindrical shell 9 are concentric circles of different radii, be used for filtering the impurity of the water that flows into from water inlet.Be provided with intake pressure mensuration mouth 4 and discharge pressure mensuration mouth 5 respectively at above-mentioned water inlet 1 and delivery port 3 places, linked by differential pressure controller 6 between the two, differential pressure controller 6 can be collected the force value at water inlet 1 and delivery port 3 places and calculate pressure difference value by micro computer like this.Front end at above-mentioned sewage draining exit 10 places and housing 9 also is respectively arranged with blowdown actuator 7 and backwash actuator 8, and they also are connected with differential pressure controller 6 respectively, is used to carry out the blowdown signal or the backwash signal that are sent by differential pressure controller 6.When intake pressure measure mouthfuls 4 and discharge pressure measure mouthfuls 5 pressure difference and narrow down to when closing set value, blowdown actuator 7 and backwash actuator 8 are closed immediately.

Owing to adopted said structure, the utility model can be finished full-automatic blowdown according to following principle and process and filter: flow through screen pack 2 when arriving delivery ports 3 when being filtered water by water inlet 1, intake pressure is measured mouth 4 and is recorded different force value respectively with discharge pressure mensuration mouth 5, when the impurity in the screen pack 2 deposits when too much, will cause the pressure of the pressure of water inlet 1 much larger than delivery port 3, when this pressure difference value reaches the predefined blowdown difference of differential pressure controller 6, blowdown actuator 7 and backwash actuator 8 can obtain the operating mode of differential pressure controller 6 simultaneously and carry out signal, and blowdown this moment actuator 7 is in running order with backwash actuator 8.When pressure difference value arrived the blowdown close value, blowdown actuator 7 and backwash actuator 8 obtained the operating mode stop signal of differential pressure controller 6 simultaneously, and blowdown this moment actuator 7 remains static with backwash actuator 8, and promptly working finishes.

Pass through said process, what of screen pack 2 places alluvials foul are the duty of differential full-automatic drain filter of the present utility model be because of, reach the pressure difference that influences entery and delivery port, the size of pressure difference is exactly a blowdown whether direct factor, be foul alluvial how much whether determine blowdown, make it need not labor management, instant blowdown when the dirt alluvial is arranged, no dirt need not blowdown when depositing, and reaches energy saving, the economical beneficial effect of water saving.

Claims

1, a kind of differential full-automatic drain filter by a columniform housing (9) and set up thereon water inlet (1), delivery port (3) and sewage draining exit (10) to constitute simultaneously, is characterized in that: be provided with screen pack (2) in the described housing (9); Described water inlet (1) and delivery port (3) are located to be provided with respectively intake pressure and are measured mouthful (4) and discharge pressure mensuration mouthful (5), are linked by differential pressure controller (6) between the two; Described sewage draining exit (10) is located and housing (9) front end is respectively arranged with blowdown actuator (7) and backwash actuator (8), and this blowdown actuator (7) is connected with differential pressure controller (6) respectively with backwash actuator (8).

2, differential full-automatic drain filter according to claim 1 is characterized in that: described screen pack (2) is for cylindric, with described cylindrical shell (9) be the concentric circles of different radii.