43results about How to "With self-priming function" patented technology

The invention provides a self-priming multistage vortex pump, which belongs to the technical field of water pumps. It solves the problem that most of the existing self-priming pumps are single-stage pumps, which have a low lift and cannot be used for high-rise water use. The self-priming multistage vortex pump includes a pump body with a vortex pump cavity inside, a pump shaft driven by a motor pierced in the vortex pump cavity, and an impeller located in the vortex pump cavity is sleeved on the pump shaft. There are several cavities arranged parallel to each other in the pump body. Several vortex pump cavities are arranged in series and each vortex pump cavity is provided with an impeller sleeved on the pump shaft. The connected water inlet, the pump body is also provided with a self-priming chamber connected with the last stage vortex pump chamber, and the self-priming chamber is equipped with an air-water separation structure. The invention has the characteristics of a self-priming pump and a vortex pump, effectively improves the lift, and is suitable for high-rise water use.

The invention discloses a revolving bed, which comprises a revolving bed layer, a liquid phase distribution pipe, a gaseous phase inlet and a gaseous phase outlet, a liquid phase inlet and a liquid phase outlet, a shell, a composite impeller, a mud baffle ring and a mud collection box. Two ends of the shell are provided with the gaseous phase inlet and the gaseous phase outlet respectively; the liquid phase distribution pipe has a cylindrical structure, of which the pipe wall is provided with liquid distribution holes; the liquid phase distribution pipe is both used as a rotating shaft of therevolving bed layer and the composite impeller; the composite impeller is arranged at a position close to the gaseous phase inlet; the mud baffle ring has an annular structure, which is close to the shell and fixed between the revolving bed layer and the composite impeller; the mud collection box is arranged at the bottom of the shell corresponding to the composite impeller; the liquid phase inlet is connected with the liquid phase distribution pipe through a revolving joint; and the liquid phase outlet is arranged at the bottom of the shell. The composite impeller removes the micro solid particles in a gaseous phase so as to realize the pretreatment on the gaseous phase and prevent the revolving bed layer from scaling. The revolving bed is applicable to gaseous phase and liquid phase mass transfer and reaction, particularly the gaseous phase and liquid phase mass transfer and reaction with micro solid particles.

The invention discloses a self-priming centrifugal pump. The self-priming centrifugal pump comprises a centrifugal pump body, wherein the centrifugal pump body is provided with an impeller chamber which is provided with a water inlet, the water inlet is connected with a water inlet pipe, and a one-way valve is mounted on the water inlet pipe; the self-priming centrifugal pump is also provided with a gas-water separation bucket which is arranged above the centrifugal pump body; an upper interface which is upwards protruded is formed in the upper part of the impeller chamber, the upper interface communicates with the impeller chamber, and the bottom of the gas-water separation bucket communicates with the upper interface; the gas-water separation bucket is connected with a water return pipeline which communicates with the impeller chamber, and a self-operated regulating valve is arranged on the water return pipeline. According to the self-priming centrifugal pump disclosed by the invention, the gas-water separation bucket and the corresponding pipeline are additionally arranged based on a common centrifugal pump, so that the purpose that the common centrifugal pump has the self-priming function can be achieved, the application range of the common centrifugal pump is extended, the efficiency of the centrifugal pump is improved, and investment is reduced.

The invention relates to a self-suction centrifugal pump which comprises a pump body and a motor, wherein impellers are installed on a motor shaft of the motor, the pump body comprises a water inlet channel, a volute and a water tank, the volute is connected to the motor in a buckled mode, and the impellers are located inside the volute. The volute is located under the water tank, and an outlet of the volute is connected with an upper water port arranged in the bottom of the water tank. The bottom end of the water inlet channel is connected with an inlet located in the center of the volute, the outer wall of the upper end of the water inlet channel is attached to the outer wall of the water tank and is provided with a water hole enabling an inner cavity of the water inlet channel and an inner cavity of the water tank to be communicated, and a water supply connector is arranged at the top end of the water inlet channel. The self-suction centrifugal pump further comprises a tank cover arranged on the top of the water tank in a buckled mode, and the tank cover is provided with a water supply port and a water outlet connector. A partition plate parallel with the motor shaft in direction is arranged on the top of the inner cavity of the water tank. The self-suction centrifugal pump further comprises a rotating plate, a plate body at the upper end of the rotating plate rotates with a central line, of a connection portion located at the lower end of the rotating plate, as an axis, a water hole stop block is further arranged on the connection portion through a support rod, and the water hole stop block seals up the water hole when the plate body of the rotating plate rotates to a position where the rotating plate is attached to the partition plate.

The invention relates to a low flow positive pressure automatic foam proportioner, which comprises a flow meter for measuring the water flow of an output pipeline of a fire pump, a liquid level switch for setting the foam proportion, a foam proportion controller for calculating the rotate speed of a foam metering pump according to the set foam proportion and measured water flow, a foam metering pump controller for controlling an adjustable-speed motor according to the calculation result of the foam proportion controller, a display operating instrument served as an input and output device of the foam proportion controller, a foam metering pump for adding foam into the output pipeline of the fire pump and the adjustable-speed motor for driving the foam metering pump. The invention solves the technical problem that primary adding method cannot meet large changing range of water flow of foam fire-fighting equipment, and provides the low flow positive pressure automatic foam proportioner that can add foam solution according to set proportion within a full flow range.

The invention relates to a self-suction centrifugal pump which comprises a pump body and a motor, wherein impellers are installed on a motor shaft of the motor, the pump body comprises a water inlet channel, a volute and a water tank, the volute is connected to the motor in a buckled mode, and the impellers are located inside the volute. The volute is located under the water tank, and an outlet of the volute is connected with an upper water port arranged in the bottom of the water tank. The bottom end of the water inlet channel is connected with an inlet located in the center of the volute, the outer wall of the upper end of the water inlet channel is attached to the outer wall of the water tank and is provided with a water hole enabling an inner cavity of the water inlet channel and an inner cavity of the water tank to be communicated, and a water supply connector is arranged at the top end of the water inlet channel. The self-suction centrifugal pump further comprises a tank cover arranged on the top of the water tank in a buckled mode, and the tank cover is provided with a water supply port and a water outlet connector. A partition plate parallel with the motor shaft in direction is arranged on the top of the inner cavity of the water tank. The self-suction centrifugal pump further comprises a rotating plate, a plate body at the upper end of the rotating plate rotates with a central line, of a connection portion located at the lower end of the rotating plate, as an axis, a water hole stop block is further arranged on the connection portion through a support rod, and the water hole stop block seals up the water hole when the plate body of the rotating plate rotates to a position where the rotating plate is attached to the partition plate.

The invention provides a portable series excited motor garden jet pump, which belongs to the field of a technical water pump and solves the problems that the existing water pump adopts an induction motor, the size is larger, the weight is heavy, the carrying and the moving of the whole machine is not flexible enough, and the like. The garden jet pump comprises a pump case, wherein the pump case is provided with a water inlet joint and a water outlet joint which are symmetrically arranged at two sides of the upper part of the pump case, a pressure boosting cavity is arranged in the pump case arranged at the lower side of the water inlet joint, the other side of the pressure boosting cavity is provided with a series excited motor, a water wheel arranged in the pressure boosting cavity is arranged on a motor shaft of the series excited motor extending into the pressure boosting cavity, the water inlet joint is communicated with a water injection opening of the pressure boosting cavity through a water inlet passage, and the water outlet joint is communicated with a water outlet of the pressure boosting cavity respectively through a water outlet pipe and a water outlet passage. The portable series excited motor garden jet pump has the advantages that the structure is compact, the size is small, the weight is light, the work efficiency is high, the carrying is convenient, and the portable series excited motor garden jet pump is suitable for being used in gardens in various environments such as families and public places.

The invention discloses a centre-opening single-stage or multistage dual-suction turbine synchronous pump, which comprises a pump body and an automatic control system. Wherein, it is characterized in that: the intake of pump is downward and vertical to the axis of centre opening surface and supported at the center; the top of pump or the intake is mounted with fan, whose air inlet is through to the inlet chamber or the intake of pump. The invention can realize synchronous discharge and suction, that it can discharge water when started, and discharge complete when stopped, to prolong the service life. The invention can avoid protection in winter to save cost. And it has high efficiency and better energy saving effect; therefore, it can save 1 / 2 cost than present pumps.

The invention relates to a consumer electronics protection type luminous self-suction type pearl bag. The pearl bag comprises a bag body (1); a plurality of pearls (2) are uniformly adhered to the outer side of the bag body (1); a handle (3) is arranged on the bag body (1); and magnetic strips are respectively connected to two sides of an opening end of the bag body (1) in a penetrating manner, and are a N-pole magnetic strip and a S-pole magnetic strip respectively. The consumer electronics protection type luminous self-suction type pearl bag is attractive in appearance and cannot be lost easily.

The invention relates to a fireproof self-suction type pearl bag. The pearl bag comprises a bag body (1), wherein a plurality of pearls (2) are uniformly pasted on the outer side of the bag body (1), and the bag body (1) is provided with handles (3); two sides of the opening end of the bag body (1) are both connected with magnetic bars in a penetration manner, and the magnetic bars connected to two sides in the penetration manner are respectively an N pole and an S pole. The fireproof self-suction type pearl bag is beautiful in appearance, and is difficult to lose.

The invention relates to a centralized automatic control switching feeding system and a control method thereof in the field of optical fiber manufacturing. Including central material tank, weighing device, diaphragm pump, air bubble warning device, control valve 1, control valve 2, control valve 3, control valve 4, defoaming device, paint filter, main pipeline, control valve 5, paint bucket, Feed pipe, paint liquid level sensor, discharge pipe, central controller and upper computer; the central material tank is placed on the weighing device, the central material tank is connected to the diaphragm pump through a flexible hose, and the outlet of the diaphragm pump is connected to the air bubble warning The device is connected, the paint filter is connected to the main pipeline, the branches of the main pipeline are respectively connected to the paint buckets of each line, and the central controller is connected to the upper computer.