64 results about "Pulser pump" patented technology

Methods for forming proppant pillars in a formation during formation fracturing include include periods of pumping a first fracturing fluid including a proppant and an aggregating composition including a reaction product of a phosphate compound or a plurality of phosphate and an amine, periods of pumping a second fracturing fluid excluding a proppant and an aggregating composition including a reaction product of a phosphate compound and periods of pumping a third fracturing fluid including an aggregating composition including a reaction product of a phosphate compound, where the pumping of the three fracturing fluids may be in any order and may involve continuous pumping, pulse pumping, or non-continuous pumping.

The pulse pump is driven by an electric motor and gear reduction driving an eccentric rotor, which, in turn, oscillates a mechanism actuating a diaphragm to transfer fluid through one-way check valves. The pump may be used in a number of different applications, but is particularly useful in applying biodegradation material to consume grease and other biodegradable matter typically found in drainage systems of food processing facilities, converting such matter into carbon dioxide and water. The device includes a system for placing the mechanism in a neutral position when the pump is deactivated, to avoid causing the diaphragm to take a set toward either extreme of travel when parked for an extended time. One embodiment incorporates a multiple piece actuator assembly having a diaphragm sandwiched between components. Another embodiment uses a single piece actuator having a circumferential groove, with the diaphragm having a toroid configuration and attaching within the groove.

The invention discloses a device for controlling desert; a spraying film covering network pulse pump drip irrigation device for controlling desert includes a solar panel, a microprocessor pulse controller, a pulse pump, a nutrition bowl block, a branch of a main water pipeline, drip irrigation pipelines, a main water pipeline and drip irrigation holes; an output terminal wire of the electrode of the solar panel is connected with the microprocessor pulse controller which is connected with the pulse pump by a lead, a water inlet of the pulse pump is connected with the main water pipeline, a water outlet thereof is connected with the branch of the main water pipeline, the branch of the main water pipeline is connected with every drip irrigation pipeline, the nutrition bowl is embedded in the drip irrigation hole of the drip irrigation pipeline, and a glue film is loaded in a manual sprayer which is the existing knapsack sprayer. The device has reasonable structure, good working property, durability, simple installation and simple and convenient maintenance-free; pipeline parts can be recycled when not in use.

An SCR injection metering module and a control method therefor. The module comprises a bracket (7), a pulse pump (1) mounted at one end of the bracket (7), an upper end cover (8) fixed at the other end of the bracket (7), a spray nozzle (18) and a controller (9). The bracket (7) extends from the upper part of a DEF storage tank to the bottom of the DEF storage tank, and is fixed onto the storage tank through the upper end cover (8). The controller (9) controls the operation of the pulse pump (1). The pulse pump (1) comprises a solenoid driver (23) and a plunger pump (22), and an axially penetrating internal flow passage (21), wherein a DEF enters an inlet of the internal flow passage (21) through a first filter (2) arranged at the lower-end inlet of the internal flow passage (21), an outlet of the internal flow passage (21) is higher than the inlet of the internal flow passage (21), a part of the working fluid entering the internal flow passage (21) is pumped to the spray nozzle (18) by the plunger pump (22), and a part thereof is discharged to the pulse pump (1) from the outlet of the internal flow passage (21). The characteristic parameters of the pulse pump (1) are pre-stored in the controller (9), so that the controller (9) can operate in a passive mode or an intelligent mode.

The pulse pump is driven by an electric motor and gear reduction driving an eccentric rotor, which, in turn, oscillates a mechanism actuating a diaphragm to transfer fluid through one-way check valves. The pump may be used in a number of different applications, but is particularly useful in applying biodegradation material to consume grease and other biodegradable matter typically found in drainage systems of food processing facilities, converting such matter into carbon dioxide and water. The device includes a system for placing the mechanism in a neutral position when the pump is deactivated, to avoid causing the diaphragm to take a set toward either extreme of travel when parked for an extended time. One embodiment incorporates a multiple piece actuator assembly having a diaphragm sandwiched between components. Another embodiment uses a single piece actuator having a circumferential groove, with the diaphragm having a toxoid configuration and attaching within the groove.

The invention discloses a SCR injection system. The SCR injection system comprises a pulse pump, an injection vacuum device, a nozzle, and a controller for generating driving signals. The pulse pump receives controller pulse signals to generate pressure fluids so as to supply injection sources to the nozzle and the injection vacuum device. The pulse pump includes an electromagnetic device and a plunger pump. The injection vacuum device includes an injection pipe, an injection cavity, a negative-pressure cavity, a guide port, an electromagnetic conversion switch and an injection outlet. The nozzle includes a filter, a nozzle valve, a bypass valve, a cooling device, a cyclone runner and a cyclone spraying hole. The first purpose of the invention is to provide the SCR injection system, with simple structure, good adaptability, high control precision and convenience for installation, replacement and maintenance, and a control method thereof; and the second purpose is to lower the cost of a liquid injection metering system for exhaust aftertreatment of the engine.

The invention provides a multi-box pulse-type high-pressure circulating cleaner. The cleaner is characterized in that the cleaner comprises more than two box bodies, discharge discs, trays, dumping devices, a recycling delivery pump, a high-pressure pulse pump, a water inlet pipe, water spray nozzles, a grid, a water outlet pipe, filter devices and a gang switch, wherein the discharge discs are arranged in the box bodies; the trays are arranged on the discharge discs and are densely arranged in a matrix; the dumping devices are arranged below the discharge discs in the box bodies; the recycling delivery pump is used for providing high-pressure water; the high-pressure pulse pump is connected with the recycling delivery pump; the water inlet pipe is connected with the high-pressure pulse pump; the water spray nozzles are arranged on the water inlet pipe and among the trays; the grid is arranged below the dumping devices; the water outlet pipe is arranged below the grid; the filter devices are connected with the water outlet pipe; the box bodies are provided with cover plates connected with the gang switch; and gaps are reserved between the cover plates and containers. The cleaner has the following beneficial effects that: as the high-pressure pulse cleaning method is adopted, the washing time is sufficient to wash multiple (tens of) containers and the containers with a complex structure can be easily cleaned; the containers are arranged on the discharge discs in an array mode; multiple containers can be simultaneously cleaned; the multiple boxes circulate continuously, thus improving the work efficiency, saving manpower and material resources and ensuring low production cost; and the cleaner has a simple structure and is convenient to operate.

A fuel cell system includes a fuel cell module having a solid-oxide fuel cell and a reformer adapted to perform steam reforming of a fuel gas supplied to the solid-oxide fuel cell, a water supplying unit and a control unit. The controller unit is adapted to control, at least during start up of the fuel cell system switching of a pulse pump from a stop state to a pumping state to start pumping of water, and to change the pulse pump to a normal control state after performing a start-operation-control which sets a feed flow rate of the pulse pump higher for a predetermined time than a feed flow rate of the water during the normal control state.