CN204502550U - A kind of filter gas back flushing device - Google Patents

Abstract

The utility model relates to a kind of filter gas back flushing device, mainly comprises compressed air piping, Pneumatic butterfly valve and check-valves; Described Pneumatic butterfly valve and check-valves are all arranged on compressed air piping, and described check-valves is arranged on the front end starting butterfly valve.The utility model has the advantage of: add a check-valves at pneumatic operated valve leading portion, can control the adverse current of water effectively in time, breaking down at pneumatic operated valve is the adverse current that also effectively can control water, adds the conduit running time limit.

Description

A kind of filter gas back flushing device

Technical field

The utility model relates to a kind of filter gas back flushing device, and a kind of adverse current that effectively can control water prevents the device of corrosion pipeline specifically.

Background technology

Filter is indispensable a kind of device on pumped (conveying) medium pipeline, is usually arranged on the entrance point equipment of pressure-reducing valve, relief valve, Valve for keeping constant water level or miscellaneous equipment.After fluid enters the filter cylinder being equipped with certain specification filter screen, its impurity is stopped, clean filtrate is then discharged by filter outlet, and when needs clean, as long as taken out by dismountable filter cylinder, reload after process, therefore, working service is very convenient.

When initial filter is installed, check-valves is not installed, due to indefinite when pneumatic operated valve cuts out in time (particularly when source of the gas interrupts suddenly), therefore often cause water adverse current in tank body in pipeline, be easy to pipeline corrosion after of long duration, thus generation iron rust, reduce the service life of pipeline.

Summary of the invention

The technical problems to be solved in the utility model is to provide the filter gas back flushing device that a kind of adverse current that effectively can control water prevents corrosion pipeline.

In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of filter gas back flushing device, and its innovative point is: mainly comprise compressed air piping, Pneumatic butterfly valve and check-valves;

Described Pneumatic butterfly valve and check-valves are all arranged on compressed air piping, and described check-valves is arranged on the front end starting butterfly valve.

The utility model has the advantage of: add a check-valves at pneumatic operated valve leading portion, can control the adverse current of water effectively in time, breaking down at pneumatic operated valve is the adverse current that also effectively can control water, adds the conduit running time limit.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of filter gas back flushing device of the present utility model.

Detailed description of the invention

Schematic diagram is as shown in Figure 1 known, and filter gas back flushing device of the present utility model mainly comprises compressed air piping 1, Pneumatic butterfly valve 2 and check-valves 3.

Pneumatic butterfly valve 2 and check-valves 3 are all arranged on compressed air piping 1, and check-valves 3 is arranged on the front end starting butterfly valve 2.

Add a check-valves 3 at the leading portion of Pneumatic butterfly valve 2, the adverse current of water can be controlled effectively in time, even if breaking down at Pneumatic butterfly valve 2 is the adverse current that also effectively can control water, add the conduit running time limit.

More than show and describe general principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (1)

1. a filter gas back flushing device, is characterized in that: mainly comprise compressed air piping, Pneumatic butterfly valve and check-valves;

Described Pneumatic butterfly valve and check-valves are all arranged on compressed air piping, and described check-valves is arranged on the front end starting butterfly valve.