Embodiments of the present invention are a filtering element, a filtering equipment and a water circulation cleaning system. In an embodiment, a filtering element includes a filtering screen and filter particles adhered to one side of the filtering screen, sizes of the filter particles being gradually increased in a direction from the one side to the other side of the filtering screen. Meanwhile, there also provides a filtering equipment including the abovementioned filtering element and a water circulation cleaning system including the abovementioned filtering equipment.

A filtering device for fluids includes a filter housing (1) and a filter element (9) received in the filter housing. The filter element has an end cap (17) on at least one end. The end cap forms an enclosure for the corresponding end edge of the filtering material (23, 35) and is fixed on an element receiver (13) interacting with the bottom part (5) of the filter housing (1) to fix the position of the filter element (9) in its functional position. The element receiver forms a fluid path for the cleaned fluid exiting the hollow chamber (19) of the filter element (9). The element receiver (13) contains a valve arrangement (55) blocking the fluid path (35). A control device (79, 83) releasing the valve arrangement (55) in the functional position is on the end cap (17) of the filtering element (9). The end cap is fixed on the element receiver (13).

A filtering device for fluids includes a filter housing (1) and a filter element (9) received in the filter housing. The filter element has an end cap (17) on at least one end. The end cap forms an enclosure for the corresponding end edge of the filtering material (23, 35) and is fixed on an element receiver (13) interacting with the bottom part (5) of the filter housing (1) to fix the position of the filter element (9) in its functional position. The element receiver forms a fluid path for the cleaned fluid exiting the hollow chamber (19) of the filter element (9). The element receiver (13) contains a valve arrangement (55) blocking the fluid path (35). A control device (79, 83) releasing the valve arrangement (55) in the functional position is on the end cap (17) of the filtering element (9). The end cap is fixed on the element receiver (13).

A measurement portion and an antenna are allowed to be provided in a filter device by simply mounting one member. An antenna unit that includes an antenna configured to communicate with an IC tag is provided in a vicinity of a first end face as one end of a case. A sensor is provided inside the case and a back side of the case with respect to the antenna unit.

A variable pore size filter media including an upper plate, a retainer, and a support profile disposed between the upper plate and the retainer. The variable pore size filter media also includes a plurality of wire rings disposed on the support profile and longitudinally distributed within a region between the upper plate and the retainer, the plurality of wire rings being distributed in a non-contiguous manner to form a plurality of spaces therebetween. The variable pore size filter media further includes a plurality of pores defined by the plurality of spaces between the plurality of wire rings and a pore size adjustment mechanism configured to vary a respective distance between each of the plurality of wire rings to increase or decrease a respective size of each of the plurality of pores by increasing or decreasing a size of each of the plurality of spaces.

A fluid system includes a fluid valve, a fluid filter connected to the fluid valve, a first pressure sensor in fluid communication the fluid filter, a second pressure sensor disposed downstream of the fluid filter, and a controller configured to determine a condition of the fluid filter according to information from the first pressure sensor and the second pressure sensor. The controller may be configured to control operation of the fluid valve according to the condition of the fluid filter and the information from the first pressure sensor and the second pressure sensor. Methods for controlling a fluid system are also disclosed.

The following summary of the invention refers to the development of a multiple filtering device composed of three filtering elements (01 to 03) that are concentrically mounted on the lid (09) in the sequence EF1 (01), EF2 (02) and EF3 (03) with mesh measurements of different microns, forming four filtering chambers, with the purpose of retaining solids from agricultural spraying mixtures, monitoring the restrictive framework of the filtering elements through pressure switches (69.2) and pressure transducers (77) and alerting the obstruction through audio visual signaling (83, 83) so that the operator knows the exact moment to clean the multiple filtering device.

A method of filtering fluid for injection into an injection well comprises detecting a fluid pressure in a conduit upstream of an actuator valve, verifying that the fluid pressure is within an operating pressure range, opening an actuator valve based on the verifying, receiving a fluid having suspended solids within a filter assembly in response to opening the actuator valve, actuating a pump in fluid communication with the filter assembly based on receiving the fluid within the filter assembly, and separating at least a portion of the suspended solids in the fluid within the filter assembly.

A fuel filter monitoring method includes receiving pressure signals that are indicative of a pressure drop across at least one fuel filter of a fuel supply system configured to supply fuel to at least one fuel injector of an internal combustion engine and receiving a condition signal indicative of a condition of a fuel supply system, the condition signal being generated by one or more of a geographic location sensor, an altitude sensor, and/or a fuel temperature sensor. The method includes estimating a remaining life of at least one fuel filter of the fuel supply system based on the pressure signal and the condition signal and outputting a notification indicative of the estimated remaining life.

Disclosed is a double-water-output cylindrical integrated water purifier. A clean water flow channel, a pure water branch flow channel and a waste water bypass flow channel are further provided in the base, and a clean water outlet in communication with the clean water flow channel is provided at a side of the base; the pure water flow channel is communicated with the clean water flow channel via the pure water branch flow channel, and a second check valve for controlling water to flow into the clean water flow channel unidirectionally is disposed in the pure water branch flow channel; the waste water outlet end face is further communicated with the clean water flow channel via the waste water bypass flow channel, and a third check valve for controlling water to flow into the clean water flow channel unidirectionally is disposed in the waste water bypass flow channel.