94results about How to "Strong self-priming ability" patented technology

The invention discloses a submarine shallow-layer non-diagenetic natural gas hydrate lifting method and a system, which are used for lifting submarine shallow-layer non-diagenetic natural gas hydrate.A pilot hole is drilled by a drill bit, a pressure pump is started after a predetermined position is reached, high-pressure seawater drives a screw motor to rotate, and torque and rotational speed are transmitted to a screw pump by a cardan shaft; jet breaking is started by nozzles, hydrate is collected, secondarily broken and separated by collecting inlets, a secondary breaking device and a separator, separated sand is backfilled, and hydrate slurry is lifted to a solid control system on an offshore platform by the screw pump to undergo post-treatment. The invention has the following advantages: the whole process is simple, and submarine shallow-layer non-diagenetic hydrate can be effectively broken, separated and lifted; the screw pump device has the characteristics of compact structure, small size, high self-sucking capability, stable operation and long service life; and an upper bridge type passage and a lower bridge type passage ingeniously realize the pumping and lifting of seawater and hydrate slurry and save underground space.

The invention discloses a hybrid power underwater glider using battery electric energy and ocean temperature difference energy. The hybrid power underwater glider comprises a front immersion cabin section, a front pressure-resistant cabin section, a middle pressure-resistant cabin section, a rear pressure-resistant cabin section, a rear immersion cabin section, heat exchangers and horizontal wings, wherein the cabin sections are fixedly connected in sequence along a cylindrical rotation axis to form a hybrid power underwater glider body part, the heat exchangers are externally hung on a bellypart of the body, the horizontal wings are horizontally arranged on two sides of the rear pressure-resistant cabin section, the hybrid power underwater glider battery pack has two degrees of freedom of translation and rotation, and can be used for adjusting a pitching attitude angle and a course angle of the underwater glider; a hydraulic device in the main machine body and the heat exchangers form a hydraulic oil path, and in the diving preparation stage of the hybrid power underwater glider, an oil return path works, in the diving gliding stage, a solidification oil path works, in the floating conversion stage, the energy release oil way and the oil pumping oil way work, and in the floating gliding stage, the energy storage oil way works, and the buoyancy driving process is completed bycompounding two forms of energy, namely battery electric energy and ocean temperature difference energy.

The invention discloses an injection pump and a suction method thereof. The injection pump comprises a suction pipe, a nozzle, a choke inlet section, a choke, a diffusing pipe and an annular nozzle, wherein the caliber of a discharging hole of an inner cavity of the nozzle is more than that of a feeding hole of the inner cavity of the nozzle, the discharging hole of the inner cavity of the nozzle is sequentially communicated with the choke inlet section, the choke and the diffusing pipe, the caliber of the inlet end of the choke inlet section is more than that of the outlet end of the choke inlet section, the caliber of the outlet end of the diffusing pipe is more than that of the inlet end of the diffusing pipe, an annular air chamber is arranged on the outer side of the nozzle and communicated with an air inlet pipe, a ventilating annular gap is arranged between the inner wall of the annular nozzle and the nozzle, one end of the gap is communicated with the inlet end of the choke inlet section, and the other end of the gap is communicated with the air chamber. The invention has the advantages that the injection pump has high vacuum degree by completely using an air medium as power, strong self-absorption capacity, high suction stroke, no blockage and low cost, is suitable in environments with high temperature, high pressure, deep water, strong radiation, strong corrosion and the like, and can be used for sucking fluid with higher concentration and larger-particle solid materials.

The invention discloses a low-noise self-priming combined pump. According to the low-noise self-priming combined pump, diffusion guide vanes and a guide disc of a traditional self-priming jet pump are removed, a single-baffle-tongue single-outlet centrifugal vortex chamber or a multi-baffle-tongue multi-outlet centrifugal vortex chamber which is higher in hydraulic performance and efficiency is adopted, a single entry type runner is designed, centrifuged and accelerated fluid is reasonably guided into a distribution pumping chamber or a distribution tee joint, scraping among the guide vanes, the guide disc and a centrifugal impeller and strong impact of the high-speed fluid to the guide vanes and the guide disc are eliminated essentially, transitional flowing between the centrifugal vortex chamber and the distribution pumping chamber or the distribution tee joint is more smooth, and the flowing losses and flowing noise are lower. Through the reasonable arrangement of the single entry type runner, continuous supply of the working fluid at the inlet section of a spray nozzle can be guaranteed, so that negative pressure is maintained, and strong self-priming capacity is obtained. The traditional large-sized distribution pumping chamber can be replaced with the distribution tee joint, and thus the structure is more compact.

The invention provides a micro closed-circuit continuous flotation machine, relating to a flotation machine for a beneficiation experiment. A continuous flotation experiment is carried out by using a small amount of representative sample ores, the result of the experiment can represent the results of small closed-circuit experiments and pilot-scale tests in a single machine of a laboratory, and laboratory or industrial beneficiation indicators can be provided in a shorter period of time. The micro closed-circuit continuous flotation machine mainly comprises a slurry storage barrel, a stirring barrel, a trace reagent feeder rubber hose pump and a flotation machine; the flotation machine comprises a main motor, a flotation tank, a suction regulating valve, a scraping plate motor, a scraping plate, a foam tank, a liquid level regulating tube, a frequency converter, an electric control cabinet, a stirring shaft and an impeller, wherein the slurry storage barrel is connected to the stirring barrel, the stirring barrel is connected to a trace reagent feeder, the rubber hose pump is connected to the flotation tank, the frequency converter is connected to the main motor and controls the main motor, and the liquid level regulating tube is mounted on the flotation tank; the reagent feeder is connected to the stirring barrel so as to supply auxiliary absorption agent foaming agent and regulating agent for flotation; the machine is mainly used for beneficiation laboratories.

The invention discloses a jet self-sucking centrifugal water pump. The pump comprises a pump body, a nozzle, a diffuser, an impeller, an inner pump cover, a guide blade, an outer pump cover, a pump shaft, a bracket and a motor, wherein the motor is directly connected with the bracket; the pump shaft is coaxially connected with the motor; the impeller is arranged at the end of the pump shaft; two sides of the impeller are provided with a centrifugal pump chamber structure through matching of the outer pump cover, the guide blade and the inner pump cover; the opened end of the pump body is connected with the outer pump cover in a sealed mode, so that a centrifugal pump chamber is accommodated in the pump body; axial through holes are uniformly distributed on the end face of the inner pump cover and communicated with a water outlet cavity of the pump body; the diffuser is connected between the inner pump cover and a clapboard in the sealed mode; the end of the diffuser, which is positioned at one end of a water sucking port, is coaxially provided with the nozzle to form a jet pump structure; and the outlet of the diffuser is positioned at the inlet of the impeller. A jet pump and a centrifugal pump are integrated to achieve performance complementation; the jet pump helps the centrifugal pump to self-suck, the self-sucking process is short, and self-sucking capability is high; andthe pump has an integrated structure and is not required to be additionally provided with a self-sucking device, so that matching cost is saved, and the pump is particularly suitable to be used as a marine pump.

The invention discloses a travelling control valve of a crawler-type hydraulic travelling system and the travelling system. The travelling control valve comprises a flow dividing valve, shuttle valves, normal-off type pressure compensators and three-position four-way electromagnetic proportional reversing valves, wherein an quantitative pump output oil path is divided into two paths through the flow dividing valve, one path flows to a left travelling motor through the first three-position four-way electromagnetic proportional reversing valve, and the other path flows to a right travelling motor through the second three-position four-way electromagnetic proportional reversing valve; the pressure difference between the two ends of the first three-position four-way electromagnetic proportional reversing valve is determined by the first normal-off pressure compensator through the first shuttle valve; and the pressure difference between the two ends of the second three-position four-way electromagnetic proportional reversing valve is determined by the second normal-off pressure compensator through the second shuttle valve. According to the valve, the influence of two-side different loads on flow is effectively avoided, the synchronous precision of the motors on the two sides is improved, and differential driving is stabler and more flexible; the displacement of the two variable motors is controlled by the two-position three-way electromagnetic valves and pressure reducing valves correspondingly so as to achieve high-low-speed switching of vehicles.

A self-priming non-clogging sewage pump comprises a pump block, a rotating shaft, an impeller, a pump cover, and a hanger. The pump block comprises an oil chamber, a volute, a gas-liquid separation chamber, an inflow pipe, a liquid storage chamber and a front cover plate. The pump cover is connected with the left side of the volute. The hanger is fixed to the left end of the pump block. One end of the rotating shaft is connected with the impeller; the other end of the rotating shaft penetrates the pump cover, the oil chamber and the hanger and is connected with a bearing at the left end of the hanger. The impeller is disposed inside the volute. The front cover plate is fixed to the inner wall of the volute through bolts. The right side of the lower end of the volute is provided with a reflow hole which is communicated with the liquid storage chamber through a one-way inflow valve. An outlet in the upper end of the volute is arranged in the gas-liquid separation chamber. The self-priming non-clogging sewage pump is simple in structure, low in production cost and convenient to popularize; clogging can be avoided effectively; maintenance costs are lowered; the service life of the pump is prolonged. The self-priming non-clogging sewage pump has high self-priming capacity, self-priming time is shortened and operating efficiency is improved.

The invention discloses an efficient multifunctional rotor type submersible sewage pump and belongs to positive displacement pumps. Sewage delivery is conducted through the theory of a radial piston pump. When a submersible motor drives a rotor to rotate, plungers on the rotor move in a reciprocating mode in the radial direction under the control of an eccentric stator; when the plungers move outwards, media are sucked from a suction port in a pump body through a central channel and radial holes in the pump body; when the plungers move inwards, the media are discharged towards a discharging port through the central channel and the radial holes. Due to the fact that the multiple plungers which are distributed uniformly convey the media uninterruptedly, liquid flows are quite stable, consistent and free of pulses; baffle tongues on a baffle tongue sleeve prevents the leakage from a high-pressure area to a low-temperature area inside the pump body; meanwhile, the baffle tongues and the radial holes in the rotor form cutting pairs, long fibers are cut automatically and continuously, and winding is eliminated. The pump is high in self-section function, and gas-liquid-solid mixed transportation can be conducted. Furthermore, the pump has a bidirectional operation function, liquid can be conveyed when the pump rotates in the positive direction, and the pump can wash a filter screen and eliminate blockage without stopping a machine when rotating in the negative direction.