9results about How to "Sink fast" patented technology

The invention relates to the field of fire rescue, in particular to an underwater lifesaving device for fire rescue. An existing device is not high enough in safety and insufficient in stability during underwater lifesaving, potential safety hazards are prone to occurring, rapid diving into water is not convenient to achieve, and the rescue efficiency is reduced. An underwater lifesaving device for fire rescue comprises an arc panel and the like. One end of the cambered surface plate is fixedly connected with a first soft belt, the other end of the cambered surface plate is fixedly connected with a second soft belt, the surface of one side of the first soft belt is fixedly connected with a hook-and-loop fastener hook face, and the surface of one side of the second soft belt is fixedly connected with a hook-and-loop fastener loop face. Due to the fact that the cambered surface plate is located on the belly of the wearer and the buoyancy tanks are distributed at the belly of the wearer, buoyancy borne by the buoyancy tanks enables the wearer to always keep the face upward in the process of floating to the water surface and after floating out of the water surface, and the suffocation risk of the wearer is reduced.

The utility model discloses a river benthos sampling and analyzing device, and relates to the technical field of sampling devices. The sampling and analyzing assembly is used for sampling excreted sediments of river benthos, and the sampling and analyzing assembly comprises a sampling cylinder and a balancing weight fixedly arranged at the bottom end of the sampling cylinder; and the lifting assembly is used for automatically lifting the sampling analysis assembly. According to the river benthic organism sampling and analyzing device disclosed by the utility model, the sampling and analyzing component is arranged, so that when the device is used for sampling excrement of river benthic organisms, the aim of automatically sampling the excrement of the river benthic organisms is fulfilled, and in the sampling process, the excrement of the river benthic organisms can be automatically sampled. The rotation of the small motor can drive three L-shaped rods and bristles to stir the river bottom, so that excrement around the bottom end of the sampling barrel can be raised and is sucked into the sampling barrel, the purpose of sampling the periphery of the sampling barrel in a large range is achieved, and the sampling sufficiency is improved.

The utility model discloses a transformer magnetic flux leakage shielding device, including mounting bracket, the mounting bracket upper end fixed mounting has transformer, the mounting bracket upper end is provided with shielding subassembly, shielding subassembly includes four shielding plates fixedly connected in the mounting bracket upper end, shielding subassembly still includes four guide rod through and slidingly connected in the mounting bracket upper end, four guide rod upper end common fixedly connected with shielding bin, shielding bin is seted up transmission groove with guide rod, the utility model discloses through adjustable shielding bin and guide rod structure, realize the flexible adjustment of shielding distance, when needing to overhaul transformer, the operator drives round axle sliding through the hand plate, after the limiting state of shielding bin is removed, can fast along guide rod with shielding bin sinking to the mounting bracket below, avoids the situation of scratching line from appearing, and the sufficient space is given for the overhaul work, and the maintenance convenience is improved significantly.

The invention relates to a combined sinking deepwater double-wall steel cofferdam and a construction method thereof. The technology that a steel casing assists in overall lowering of the steel cofferdam is adopted. A sand blowing riverbed temporary steel coaming anti-scouring technology is adopted; a high-side water injection unbalance loading weight correction technology is adopted; and a cofferdam bottom sand blowing sinking technology is adopted. The construction method comprises the following main construction steps: (1) erecting and assembling a steel cofferdam assembling platform; the deepwater double-wall steel cofferdam has the advantages that the overall lowering speed of the deepwater double-wall steel cofferdam is increased, it is guaranteed that the temporary anti-scouring steel coaming is rapidly dismantled and recycled, and the deviation correction effect of the cofferdam is achieved.

The invention relates to the technical field of sewage treatment, and particularly discloses an anaerobic ammonia oxidation granular sludge loss prevention device in a sewage treatment reactor, the anaerobic ammonia oxidation granular sludge loss prevention device comprises a reactor body and a three-phase separator, a granular sludge interception device is arranged between the reactor body and the three-phase separator, and the granular sludge interception device comprises a middle cylinder; a center block is fixedly arranged at the center of the middle barrel, sealing bearings are evenly arranged on the circumferential face of the middle barrel, positioning holes aligned with the sealing bearings in the radial direction are formed in the outer circumferential face of the center block, a rotating shaft is rotationally arranged between each sealing bearing and the corresponding positioning hole, and a fan-shaped hole plate is arranged on each rotating shaft. The fan-shaped pore plates are arranged in a mirror symmetry manner by taking the rotating shaft as a center line; the device for preventing the loss of the anaerobic ammonia oxidation granular sludge in the sewage treatment reactor disclosed by the invention can effectively avoid the loss of the granular sludge in the anaerobic ammonia oxidation wastewater treatment process, and ensures the efficient and stable operation of the reactor.

According to the control method of the automatic pool cleaning device, the automatic pool cleaning device comprises a water pump, a sensor and an exhaust hole, the exhaust hole is located in the head of the automatic pool cleaning device, and the automatic pool cleaning device is initially placed on the water surface of a swimming pool and sinks from the water surface along with self weight. The control method comprises the following steps: acquiring first data through a sensor; according to the first data, whether the preset position of the automatic pool cleaning device is located below the waterline or not is judged, and if the preset position is located below the waterline, the following two steps are repeated till the automatic pool cleaning device makes contact with the pool bottom of the swimming pool: a water pump is started and runs for a first preset duration; and closing the water pump and keeping the water pump to be closed for a second preset duration, so that at least one part of bubbles in the automatic pool cleaning device are discharged from the exhaust hole. According to the method, more exhaust holes do not need to be additionally formed in the automatic pool cleaning device, bubbles in the automatic pool cleaning device can be rapidly discharged by repeatedly opening and closing the water pump, and then the automatic pool cleaning device can rapidly dive to the bottom of the swimming pool.

The utility model discloses a large-diameter thin-wall tubular pile which comprises a sleeve, the sleeve is of a double-layer tubular structure and comprises an inner sleeve body and an outer sleeve body, the length of the inner sleeve body is larger than that of the outer sleeve body, the inner diameter of the outer sleeve body is larger than the outer diameter of the inner sleeve body, the center axis of the outer sleeve body coincides with the center axis of the inner sleeve body, and the center axis of the outer sleeve body coincides with the center axis of the inner sleeve body. A crack between the inner sleeve and the outer sleeve is provided with an annular cavity, the annular cavity can contain a reinforcing body, the reinforcing body can be solidified, the bottom face of the outer sleeve is flush with the bottom face of the inner sleeve, and the top face of the inner sleeve is higher than the top face of the outer sleeve; the reinforcing body is located between the outer casing pipe and the inner casing pipe. The inner and outer steel sleeves are stable, high-frequency vibration can be transmitted to the bottoms of the sleeves in time, the reinforcing bodies are distributed more compactly and uniformly in the sleeves through the high-frequency vibration, the quality of the reinforcing bodies can be ensured, and the engineering requirements can be met.

The utility model discloses a water conservancy monitoring equipment for water conservancy engineering relates to water conservancy engineering technical field, including monitoring box, the monitoring box bottom fixedly connected with the buoy, the buoy inside fixedly connected with the baffle, the baffle divides the buoy and is distributed with the high pressure gas cavity and the counterweight chamber of high and low, the baffle top fixedly connected with the multisection electric push rod, multisection electric push rod piston rod end fixedly connected with the push board, through installing the buoy on the monitoring box bottom, when needing equipment to sink to the water bottom, just can be in the water suction into the counterweight chamber when lowering equipment buoyancy also increase counterweight, make it can sink to the water bottom quickly, when needing to float the salvage equipment, just need to discharge the water in the counterweight chamber, and the high pressure air in the high pressure gas cavity is introduced into the counterweight chamber inside and annular airbag inside can make the equipment whole buoyancy increase quickly, and then make the equipment can float quickly and be convenient for salvage, overall use is very convenient.

The invention discloses a preparation method of a composite water purification bacterial agent capsule, which specifically comprises the following steps: mixing Fe(NO3)3, attapulgite and water and then standing to prepare Fe(NO3)3. 3+ Modified attapulgite; Fe 3+ Modified attapulgite is mixed with unmodified attapulgite, water is added and stirred to prepare attapulgite floc suspension; concentrated bacterial liquid of Bacillus pumilus and Bacillus cereus is cultivated; floc suspension of Bacillus pumilus and Bacillus cereus and attapulgite is prepared; the water content of the floc suspension is controlled to 40% to 50% to obtain mud, sodium alginate solution is added to the mud, and plastic mud is obtained after stirring; the plastic mud is prepared into spherical particles in a mold, and the bacterial agent is embedded and freeze-dried to obtain a finished composite water purification bacterial agent capsule. The composite water purification bacterial agent capsule prepared by the method of the present invention can quickly settle in the water body, and can continuously release high-efficiency water purification bacteria to the water body at the settlement location, improve the microecological bacterial phase structure of the water body, and exert a long-term water purification effect.