30results about How to "Efficient backwash" patented technology

The filtration system of the present invention comprises first and second filtration tanks. The first filtration tank has a first floating filter media layer, a first upper screen with a first aperture ratio, a first inlet, a first backwash water supply source, and a first backwash water outlet means. The second filtration tank has a second floating filter media layer, a second upper screen with a second aperture ratio, a second inlet, an inflow blocking mechanism capable of blocking inflow of water to be treated through the second inlet, a second backwash water supply source, and a second backwash water outlet means. The first aperture ratio is smaller than the second aperture ratio.

The invention discloses a membrane bioreactor which comprises a membrane assembly and a gas-water separation device, wherein the membrane assembly can be arranged in a mud-water mixed solution; the membrane assembly comprises a filter membrane and a water production inner cavity which is formed by the filter membrane; the water production inner cavity is communicated with the gas-water separation device through a water production pipe; the gas-liquid separation device comprises a piston barrel and a piston which is arranged in the piston barrel and used for dividing the inner cavity of the piston barrel into a front cavity and a rear cavity; a check valve which is capable of communicating from the front cavity to the rear cavity is arranged on the piston; the water production pipe is communicated with the front cavity of the piston barrel; and a water outlet pipe which is externally connected with a water production pump and a gas supply pipe which is externally connected with a gas source are communicated with the rear cavity of the piston barrel. According to the membrane bioreactor, the gas-water separation device is arranged and the gas source is used as a power source of the backwashing, so that large-scale equipment such as a backwashing water pump is not used and thus the engineering cost and the water charge per ton are reduced. Practices prove that the rise of pressure is faster than that of the backwashing water pump, so that the membrane surface can be more effectively cleaned, the processing effect is good and the unit energy consumption is low.

The invention discloses a multi-stage hydraulic self-pulse backwashing mechanism, a fine filter and a backwashing method, wherein the backwashing mechanism is designed with a multi-stage dumbbell-shaped cylinder variable cross-section structure, which produces a multi-stage hydraulic self-pulse backwashing effect , strengthen the collision between the filter material particles in the filter bed and the shearing effect of the water flow, and realize the efficient backwashing of the filter bed, thus effectively solving the problem that the fine filter cannot be effectively backwashed due to the use of smaller filter materials and deeper filter beds. The problem.

The invention discloses a heat exchange system having a flow velocity detecting function. The heat exchange system comprises a cold water inlet pipe (5), a hot water outlet pipe (6), a waste water inlet pipe (7), a waste water outlet pipe (8), a spraying head (25), an upper heat exchange water channel (1) and a lower heat exchange water channel (2), wherein an upper heat exchange device (3) and a lower heat exchange device (4) are respectively arranged in the upper heat exchange water channel (1) and the lower heat exchange water channel (2). A heater (13) is further arranged on the hot water outlet pipe (6), and a detector (15) is arranged in the lower heat exchange water channel (2) and used for detecting flow velocity. The upper portion of the upper heat exchange water channel (1) is provided with a flow collecting plate (16). A detachable filter screen (17) is further arranged in the lower heat exchange water channel (2). The technical problem that stains easily accumulates inside the heat exchange devices and cannot be automatically cleaned is solved.

The invention discloses a water heater heat exchange system with a flow velocity and water flooding detecting function. The water heater heat exchange system comprises a cold water inlet pipe (5), a hot water outlet pipe (6), a waste water inlet pipe (7), a waste water outlet pipe (8), a nozzle (25), an upper heat exchange trough (1) and a lower heat exchange trough (2). An upper heat exchanger (3) and a lower heat exchanger (4) are respectively arranged in the upper heat exchange trough (1) and the lower heat exchange trough (2). The hot water outlet pipe (6) is provided with a heater (13), a detector (15) is arranged in the lower heat exchange trough (2) and used for detecting water flow velocity, and a water flooding sensor (21) is arranged at the top of the upper heat exchange trough (1) and connected with a controller (14). The water heater heat exchange system solves the technical problem that dirt is prone to accumulating in the heat exchangers and cannot be automatically cleaned.

The invention discloses a water heater heat exchange system with a water pressure and temperature detecting function. The water heater heat exchange system comprises a cold water inlet pipe (5), a hot water outlet pipe (6), a waste water inlet pipe (7), a waste water outlet pipe (8), a nozzle (15), an upper heat exchange trough (1) and a lower heat exchange trough (2). An upper heat exchange device (3) and a lower heat exchange device (4) are respectively arranged in the upper heat exchange trough (1) and the lower heat exchange trough (2), a detachable filter screen (17) is arranged in the lower heat exchange trough (2), a first pressure sensor (42) and a second pressure sensor (41) are respectively arranged on the left side and the right side of the filter screen (17) and are respectively connected with a controller (14), and the controller (14) comprises a comparing module (143) respectively connected with a setting module (144), the first pressure sensor (42), the second pressure sensor (41) and a waste water temperature sensor (20).

The invention discloses a pulse backwashing deep bed filter device and a method, and belongs to the technical field of automatic control. A set of device may be provided with 1, 2.....n pulse backwashing deep bed filters; the pulse backwashing deep bed filter comprises a casing, a water collection mechanism arranged on the lower part of the casing and a connecting tube thereof, a water distributing mechanism arranged on the upper part of the casing and a connecting tube thereof, a filter material cushion layer arranged on the lower part of the casing, a filter material arranged in the middle part of the casing, and a filter material height detection device arranged on the upper part of the casing; a backwashing pump is a centrifugal pump, the rotating speed of an arranged motor can be regulated in variable frequency; a flow detection device is arranged on a main backwashing pipeline of a backwashing pump outlet; a control cabinet is provided with a PLC (programmable logic controller), and also provided with a frequency converter for regulating the rotating speed of the backwashing pump; the flow detection device and the filter material height detection device are provided with detection signal output ends which are connected with signal acquisition ends of the PLC. The effect of the pulse backwashing deep bed filter device is that: water-saving high-efficiency cleaning of a filtering layer can be performed by used of backwash water producing flow fluctuation.

The invention discloses a water heater heat exchange system having flow velocity and temperature detecting functions. The water heater heat exchange system comprises a cold water inlet pipe (5), a hot water outlet pipe (6), a waste water inlet pipe (7), a waste water outlet pipe (8), a spraying head (25), an upper heat exchange water channel (1) and a lower heat exchange water channel (2), wherein an upper heat exchange device (3) and a lower heat exchange device (4) are respectively arranged in the upper heat exchange water channel (1) and the lower heat exchange water channel (2). A heater (13) is further arranged on the hot water outlet pipe (6), and a detector (15) is arranged in the lower heat exchange water channel (2) and used for detecting flow velocity. The detector (15) is further connected with a controller (14). The controller (14) comprises a comparison module (143) connected with a setting module (144), the detector (15) and a waste water temperature sensor (20) respectively. The technical problem that stains easily accumulates inside the heat exchange devices and cannot be automatically cleaned is solved.

The invention discloses a backflushing type heat exchange system with a water quality and temperature detecting function. The backflushing type heat exchange system comprises a cold water inlet pipe (5), a hot water outlet pipe (6), a waste water inlet pipe (7), a waste water outlet pipe (8), a nozzle (25), an upper heat exchange trough (1) and a lower heat exchange trough (2). An upper heat exchanger (3) and a lower heat exchanger (4) are respectively arranged in the upper heat exchange trough (1) and the lower heat exchange trough 92). The hot water outlet pipe (6) is provided with a heater (13), a detector (15) is arranged in the lower heat exchange trough (2) and used for detecting water quality and is connected with a controller (14), and the controller (14) comprises a comparing module (143) respectively connected with a setting module (144), the detector (15) and a temperature sensor (27). The backflushing type heat exchange system solves the technical problem that dirt is prone to accumulating in the heat exchangers and cannot be automatically cleaned.