11results about How to "Smooth down" patented technology

The invention discloses an under-pressure well process pipe column with a blowout prevention function and a construction method of the under-pressure well process pipe column. The under-pressure well process pipe column sequentially comprises a screwed plug, a screen pipe, a multifunctional under-pressure ball seat, a blowout prevention tail pipe valve, a first water distributor, a first packer, a second water distributor, a second packer and a third water distributor from bottom to top; normal water injection of the first to third water distributors is ensured; during plugging, the multifunctional under-pressure ball seat is automatically opened, so that no dead cavity is generated at the lower end of the tubular column. During normal well washing, the ball seat is closed, and water is injected into the water distributors normally. During inverse well flushing, the center channel of the ball seat is opened, and it can be guaranteed that setting can be conducted again during normal water injection. When the underground pipe column needs to be lifted, the strong magnetic ball suction pipe is put, and the lower end of the pipe column does not form a dead cavity, so that the strong magnetic ball suction pipe can smoothly move downwards; the bottom reversely seals the lower end opening of the inner sliding sleeve of the blowout prevention tail pipe valve, reliable blocking is achieved, and then underground pipe columns can be pulled out of a well mouth one by one under pressure for maintenance.

The invention relates to a portable cast-in-place pile hole bottom sediment thickness detection device. The detection device comprises a transportation plate trailer and a thickness detection assembly, a winding mechanism is arranged on the transportation plate trailer, one end of the winding mechanism is fixedly connected with the thickness detection assembly, and the thickness detection assembly comprises a bearing mechanism, a leveling mechanism, a detection mechanism and a moving mechanism; the bearing mechanism serves as a supporting mechanism of the whole detection assembly, the leveling mechanism adjusts the levelness of the detection mechanism and the bearing mechanism, the detection mechanism is used for detecting the sediment thickness, and the moving mechanism is used for driving the whole detection assembly to move. The overall flexible movement of the device is realized through the transportation plate trailer, the winding mechanism can stably lower the detection assembly into a cast-in-place pile hole, the detection assembly can be leveled in the hole through the leveling mechanism, the detection assembly is convenient to move through the moving mechanism, the heavy detection assembly does not need to be manually carried or dragged, and the detection efficiency is improved. The problems that existing equipment is large in size, and manual position adjustment is inconvenient are solved.

The application discloses a dam seepage pressure gauge, and relates to the technical field of dam seepage pressure monitoring. The seepage pressure gauge comprises a seepage pressure gauge main body, a protection mechanism, a supporting mechanism and a buffer, the protection mechanism comprises a protection cylinder, the bottom end side of a columnar body is provided with a mounting plate, the mounting plate is mounted at the bottom of the protection cylinder, and the columnar body is located in the protection cylinder; the supporting mechanism comprises a plurality of main supporting feet which are distributed in the circumferential direction of the axial line of the protection cylinder, the fixed end of the main supporting foot is mounted at the lower end of the protection cylinder, and the outer end of the main supporting foot is used for abutting against the inner wall of the hole groove; the output end of the buffer is transmissionally connected to the protection cylinder, and the buffer is used for applying a buffering force to the protection cylinder; the seepage pressure gauge protects the seepage pressure gauge main body through the protection mechanism, avoids damage of the seepage pressure gauge main body caused by direct collision between the seepage pressure gauge main body and the inner wall of the hole groove, and applies a buffering force to the protection cylinder through the buffer, so that the lowering is ensured to be smooth.

The utility model discloses a drying device for drying lump ore through low-temperature flue gas, relates to the technical field of equipment before iron making, and aims to solve the problems that the moisture content of the lump ore is high and the waste heat utilization scheme of the low-temperature flue gas is single at the same time. A lump ore chamber is of a cavity structure with the upper cross sectional area larger than the lower cross sectional area, a smoke chamber is an annular cavity and is fixed to the periphery of the lump ore chamber in a surrounding mode, the annular inner periphery is in surface contact with the periphery of the lump ore chamber, and a heat-resisting lining plate is fixedly arranged on the inner wall of the lump ore chamber and used for preventing adhesion and resisting abrasion. The upper end of the lump ore chamber is provided with an ore inlet and a dust steam outlet, and the lower end is provided with an ore outlet; the upper part of the smoke chamber is connected with a plurality of air outlet elbows, the lower part of the smoke chamber is connected with a plurality of air inlet elbows, and a plurality of guide plates are fixedly arranged in the air outlet elbows, the air inlet elbows and the smoke chamber respectively; a heat preservation shell is arranged on the periphery of the flue gas chamber; the lump ore drying device can directly utilize waste heat of low-temperature flue gas to dry lump ore, reduces water content of the lump ore entering the furnace, and is beneficial to controlling smelting cost, reducing smelting energy consumption and maintaining production stability of the blast furnace.

This invention discloses a feeding device for the production of hydroxyapatite powder, aiming to solve the problems of uneven feeding, clogging, and dust pollution caused by the poor flowability and easy agglomeration of this type of powder. The device includes a frame, a feeding channel, a crushing device and a dust removal assembly located within the channel. The crushing device includes a fixed rod and a movable crushing shovel driven by a drive assembly, effectively preventing material bridging and agglomeration through active, reciprocating crushing action. The dust removal assembly includes a suction chamber, a filter screen, and a cleaning roller brush. When the crushing shovel moves, this mechanism can be periodically actuated, driving the cleaning roller brush to automatically clean the dust accumulated on the filter screen. This invention cleverly combines active crushing with a mechanically linked self-cleaning dust removal function, eliminating the need for an additional power source for the cleaning function. Its compact structure enables uniform, stable, and dust-free feeding, effectively improving production efficiency and environmental quality.

The invention relates to a hydraulic lifting device for the smelting industry, and belongs to the field of metallurgy. Comprising a power mechanism, a hydraulic oil cylinder, a shear fork type lifting mechanism, two cathode plate hanging mechanisms, a mounting frame, two active driving mechanisms, two driven driving mechanisms and two anti-deviation mechanisms, the two cathode plate hanging mechanisms are arranged below the scissor-type lifting mechanism side by side and detachably connected with the cathode plates, the scissor-type lifting mechanism is mounted on the mounting frame and connected with the hydraulic oil cylinder, and the power mechanism is mounted on the mounting frame and connected with the hydraulic oil cylinder. The driving driving mechanism and the driven driving mechanisms are arranged at the two ends of the mounting frame respectively and are in sliding connection with the displacement track, and the two deviation preventing mechanisms are mounted on the two driven driving mechanisms in a one-to-one correspondence mode and are in rolling connection with the displacement track. Compared with worm and gear mechanical transmission in the prior art, abrasion is small, the service life is longer, and the use cost is lower.

This invention relates to the technical field of engineering experimental equipment and discloses a drop hammer impact testing machine for testing the impact resistance of drainage pipes. To solve the problem of local deceleration due to friction during the downward movement of the experimental hammer, an inner hammer and an experimental hammer are installed on a platform. Both the inner hammer and the experimental hammer descend synchronously under their own weight. During the downward movement of the platform, it moves directionally downward along the emergency stop guide rod and the one-way limiting guide rod. According to the law of free fall, if the resistance between the platform and the emergency stop guide rod and the one-way limiting guide rod causes the downward speed of the platform to decrease, the inner hammer will continue to descend under its own weight, and the movement restriction on the detection push rod will be released. The locking frame finally abuts against the limiting tooth row on the outer side of the one-way limiting guide rod through the locking push rod, thereby obstructing the downward movement of the platform and preventing it from impacting the drainage pipe again after deceleration. Ultimately, the downward speed of the experimental hammer and the inner hammer can be compared in real time.

The utility model discloses a marine hydraulic lifting working platform, and relates to the technical field of marine hydraulic lifting platforms. The device comprises a stable base, a lifting platform, a standing platform, two protection fences and a plurality of first crawling ladders, a rotating handle is rotationally arranged on one side of each protection fence, take-up rollers are fixed to the two ends of each rotating handle, steel cables are wound around the take-up rollers, and two first sliding blocks are fixed to the sides, close to the protection fences, of the first crawling ladders; a plurality of groups of first crawling ladders are respectively clamped and slide with the first slide blocks, a second crawling ladder is arranged on one side, far away from one end of the protection fence, of the first crawling ladder, and two groups of second slide blocks are fixed on one side, close to the first crawling ladder, of the second crawling ladder. Therefore, the ladder stand can be independently used for falling from the lifting platform without the help of external personnel, the use convenience of the lifting platform is improved, and the construction progress is shortened.

The upper end of a multifunctional ball seat with pressure is connected with a blowout prevention tail pipe valve in a screwed mode, the blowout prevention tail pipe valve comprises an outer sealing sleeve located in a valve body outer barrel, an expanding hole is formed in the center of the upper portion of the outer sealing sleeve, and an in-valve annular channel is arranged between the portion below an upper sealing section and the valve body outer barrel; an outer sealing sleeve liquid discharge hole is formed in the middle lower part; the inner sliding sleeve is located in the inner cavity of the outer sealing sleeve, an inner sliding sleeve outer convex ring is arranged on the periphery of the upper end of the inner sliding sleeve and supported on the inner wall of the upper portion of the outer sealing sleeve expanding hole, and an inner sliding sleeve drainage hole communicated with the outer sealing sleeve drainage hole is formed in the lower middle portion of the inner sliding sleeve; and the inner sliding sleeve shear pin fixes the inner sliding sleeve. During normal well washing, the ball seat is closed. And during inverse well flushing, the ball seat is opened. When the underground pipe columns need to be pulled out, the strong magnetic ball suction pipe is put in until the strong magnetic ball suction pipe is inserted into the blowout prevention tail pipe valve to suck up the low-density iron ball until the lower end opening of the inner sliding sleeve of the blowout prevention tail pipe valve is reversely sealed, reliable blocking is achieved, and then the underground pipe columns can be pulled out of a well mouth one by one under pressure for maintenance.

The utility model discloses a simple and easy precipitation well wall pipe lowering tool, including frame, connecting rod, pulley and steel wire rope. The frame is rectangular frame structure, is equipped with two connecting rods in the frame, and is fixedly connected with the frame inboard in both ends, forms the support structure. The connecting rod is provided with the pulley between the frame border, and the pulley is rotatably installed at the fixed position through the pivot. The steel wire rope is formed after the pulley of left and right sides is worn in the hanging point under the frame, and the steel wire rope end is connected with external power device. The tool utilizes the cooperation of frame and pulley to realize the change of steel wire rope stress direction, can realize the stable lowering of wall pipe under the action of external power, and the simple and easy structure is convenient to operate, is applicable to the hoisting and positioning of wall pipe in the construction process of precipitation well.

The utility model provides a kind of big size ton bag fills auxiliary handling mechanism for vitrified microsphere, belong to metal rust removal technical field, including two first supports, two second supports, four fixed pulleys, fixed seat and four electric hoists;Two first supports are arranged with interval, two second supports are located above side discharge port;Four fixed pulleys are respectively installed on two first supports and two second supports, and fixed pulley is located above side discharge port;Fixed seat is vertically arranged, four electric hoists are fixedly installed on fixed seat, the hook on the steel wire rope of two electric hoists is connected to ton bag upper end, and the steel wire rope of two electric hoists is respectively wound over fixed pulley located on first support, and hook is connected to ton bag lower end.The utility model provides big size ton bag fills auxiliary handling mechanism for vitrified microsphere, can quickly complete ton bag from loading position to transport car's transfer, and significantly improves production efficiency.