11results about How to "Improve sand removal efficiency" patented technology

The invention discloses a foundry sand unloading auxiliary device, and relates to the technical field of foundry sand unloading. Comprising a mold feeding section, a turnover sand discharging section and a mold discharging section, a sand discharging assembly is arranged below the turnover sand discharging section, the mold feeding section and the mold discharging section are used for conveying a casting mold, and the turnover sand discharging section and the sand discharging assembly are used for conducting turnover discharging and casting sand separation on the casting mold correspondingly; the casting mold is positioned, so that the casting mold is separated from the conveying wheel, the casting mold is overturned through the overturning roller, complete blanking of casting sand and castings is realized under the action of gravity and vibration, the labor intensity of personnel is greatly reduced in the whole process, and the sand unloading efficiency is improved; according to the casting sand separation device, the separation mechanism is arranged over the overturning roller, a casting and casting sand are separated, floating sand on the surface of the casting is cleaned through the blowing head and the cleaning brush, caked casting sand is pulverized through the combined action of the discharging roller set and the crushing filter screen at the bottom, and separation of the casting sand is better completed.

The utility model discloses a bottom sand unloading structure for evanescent mode sand box, which comprises a sand box body, a mounting seat is fixedly connected above the middle of one side of the sand box body, a hydraulic cylinder is rotatably connected to the inner wall of the mounting seat, the output end of the hydraulic cylinder is rotatably connected with a first rotating rod, and the first rotating rod is rotatably connected with a second rotating rod. A transmission rod is fixedly connected to one side of the first rotating rod, and a mounting plate is fixedly connected to the middle of the upper end of the sand box body. By starting the hydraulic cylinder, the first rotating rod drives the transmission rod to rotate in the mounting plate, and the first special-shaped missing gear drives the second special-shaped missing gear to rotate, so that the sliding strips of the second bottom plate and the first bottom plate slide in the slide ways, the bottom of the sand box body is opened, and sand is unloaded; the transmission rod drives the rotating pressing rod to rotate, the rotating pressing rod ejects the pushing rod downwards, sand on the inner wall of the sand box body is cleaned away through the scraping plate during discharging, and the sand discharging efficiency of the sand box can be improved through the structure.

The invention provides an in-situ leaching uranium mining underground negative pressure sand suction device, and relates to the technical field of in-situ leaching uranium mining, the in-situ leaching uranium mining underground negative pressure sand suction device comprises an air pipe joint, and the air pipe joint is connected to the tail end of an air pipe; the partial pressure column is connected to the lower end of the air pipe joint; the pressure release valve is arranged at the lower end of the pressure dividing column; one end of the discharge injection inclined pipe is connected to the side face of the partial pressure column; the three-phase mixing column is parallel to the partial pressure column, and the other end of the discharge injection inclined pipe is connected to the side face of the three-phase mixing column; the rotary sand suction head is arranged at the lower end of the three-phase mixing column, and a plurality of slits are obliquely formed in the side face of the rotary sand suction head; and the sand stirring assembly is connected to the pressure release valve. According to the device, sand-carrying liquid is conveyed through the grouting pipe, the wellhead liquid-solid two-phase flow velocity is increased, the underground sand removal efficiency is improved, the rotary sand suction head can control the proportion of sucked particles, and the problems that the grouting pipe is blocked, the gas lift negative pressure is insufficient, and the particles fall back due to straight-through type opening sand suction are solved.

A spiral sand removing machine capable of removing harmful solid phases in drilling fluid is characterized in that a feeding box is installed on a base, an overflow pipe and a stirrer motor are installed on the upper portion of the feeding box, and a feeding pipe and a sand discharging pipe are installed on the lower portion of the feeding box and connected with the spiral sand removing machine. The spiral sand removing machine is structurally characterized in that a spring supporting vibration frame is mounted on a base; a central shaft is mounted on a vibrating frame as a feeding pipe, bearing seats and eccentric wheels are mounted at two ends of the central shaft, a spiral screen pipe is mounted in the middle of the central shaft, and a driving motor is mounted below the eccentric wheels to drive the eccentric wheels, the central shaft and the spiral screen pipe to rotate to generate centrifugal force and vibrating force to throw drilling fluid out of a screen to flow into a circulating tank; and harmful solid phases and drilling cuttings are discharged out of the spiral screen pipe and are discharged into the sand setting tank. The technical requirement of purifying the drilling fluid is met.

The invention discloses a shale gas exploitation desanding device, and belongs to the technical field of shale gas desanding, the shale gas exploitation desanding device comprises: a bottom plate, a driving mechanism and two outer cylinders are arranged on the bottom plate, and a desanding cylinder is rotatably connected between the two outer cylinders; a filter plate and a vibration mechanism are arranged in the desanding cavity; a blanking port, wherein a sealing plate in sliding connection with the outer wall of the desanding cylinder is arranged at the blanking port; the linkage mechanism and the transmission mechanism are arranged on the outer wall of the desanding cylinder; according to the scheme, the linkage mechanism can be matched with the vibration mechanism to vibrate the filter plate in the desanding cavity, and the situation that the filter plate is blocked can be effectively prevented; when the transmission mechanism is located at the bottom, the transmission mechanism enables the sealing plate located at the bottom at the moment to be opened in a rotating mode, sand in the sand removing cavity falls out of the discharging opening, it is not needed to stop exploiting and conveying of shale gas for cleaning, time and labor are saved, normal exploiting, conveying and filtering of the shale gas are not affected, and high practicability is achieved; the device can be widely popularized and used.

The utility model discloses a geothermal water desanding device which comprises a box body, one side of the box body is connected with a water inlet pipe, the interior of the box body is connected with a sand blocking plate, a driving box is connected with a stirring mechanism, the interior of the box body is connected with a filter screen, one end of the filter screen is connected with a switch mechanism, and the other end of the filter screen is connected with a water pump. And a cleaning mechanism is connected above the filter screen. According to the geothermal water desanding device, geothermal water is conveyed into the box body through the water inlet pipe, the geothermal water passes through the sand blocking plate, large particles in the geothermal water are blocked and preliminarily screened, the driving motor is started to drive the rotating shaft to rotate, and then the mixing plate is driven to stir the geothermal water and accelerate filtration; the first gear is driven to rotate through the second gear, and then the threaded rod is driven to rotate, so that the brush cleans impurities on the filter screen, the desanding efficiency is improved, and the filtering effect is improved.

The present invention discloses a large-flow alumina automatic sand cleaning and separation device, comprising a material distribution box and three sand removal boxes, the three sand removal boxes are evenly distributed around the material distribution box and are respectively connected to the material distribution box, the sand removal box comprises a motor, a wire mesh, a collecting hopper, a filtering device and a stirring device; the wire mesh is arranged in the sand removal box, and the stirring device is arranged in the filtering device. The present invention also discloses a separation method of a large-flow alumina automatic sand cleaning and separation device, wherein the alumina is first filtered through the wire mesh, and then collected in the filtering device for filtering again; the stirring device stirs the alumina containing impurities into the feed pipe, and then discharges it into the fully automatic plate material removal device for screening, and finally obtains clean alumina. The device and method can realize two-stage filtration and two-stage sand removal, and the capacity of processing alumina can reach 300 tons / hour, with high sand removal efficiency, thorough sand removal and good sand removal effect.

The utility model discloses a circulating desanding device for sewage treatment, and relates to the technical field of sewage treatment, the circulating desanding device comprises a fixed bottom plate and a filter assembly, the left end of the upper surface of the fixed bottom plate is provided with a supporting stand column, and the filter assembly is arranged at the top of the supporting stand column; the filtering assembly comprises a filtering tank, a sand filtering net, an impurity filtering net, a drainage valve, a water conveying pipe, a drainage pump, a drainage pipe and a sealing door, the filtering tank is arranged at the top of the supporting stand column, the sand filtering net is installed at the upper end in the filtering tank, the impurity filtering net is arranged below the sand filtering net, and the drainage valve is installed at the bottom of the filtering tank. According to the circulating sand removing device for sewage treatment, through the filtering assembly, gravel and other impurities in sewage can be further intercepted and filtered through multiple filtering mechanisms, the sand removing efficiency is improved, meanwhile, the filtering mechanisms are conveniently cleaned, blockage is prevented, through the draining assembly, the gravel can be drained through the device, and the filtering efficiency is improved. Therefore, the water can be conveniently recycled.

The invention relates to the technical field of unconventional gas desanding equipment, and particularly discloses a desanding device for unconventional gas exploitation, which comprises a shell, the shell is provided with a gas inlet, a drain outlet and a gas outlet, and the shell is internally provided with a separation mechanism for desanding; the separating mechanism comprises a first separating plate and a second separating plate, the second separating plate is arranged above the first separating plate, and the first separating plate is arranged above the air inlet; the central position of the first separation plate is higher than the edge of the first separation plate, so that a gas gathering space is formed at the lower part of the first separation plate, and the second separation plate and the first separation plate have the same shape; a plurality of first separation holes are formed in the first separation plate and vertically penetrate through the first separation plate, and a plurality of second separation holes are formed in the second separation plate and vertically penetrate through the second separation plate. According to the invention, not only can fluid containing unconventional gas be subjected to desanding treatment so as to solve the problem of erosion of gravel to pipeline equipment, but also the desanding efficiency is high.

The invention belongs to the technical field of desanding equipment, and provides a 175MPa cyclone desander which comprises an inner container, an outer container and a cyclone separator, a filter assembly; a driving assembly; according to the invention, fluid with low density drives fine gravels to enter the inner container from the through holes, the fluid moves upwards and then passes through the filter cover, the fine gravels are blocked by the filter cover, and along with the impact of the fluid, the fine gravels slowly enter the first flow channel, move downwards along the first flow channel and are discharged through the second flow channel; in this way, most of the gravels driven by the fluid to move upwards can be finally discharged into the sand collecting cylinder, and the situation that the fine gravels are driven by the fluid moving upwards to move up and down repeatedly is effectively avoided, so that the filter cover is prevented from being damaged, the gravels blocked on the filter cover are prevented from being blocked more seriously, the filter cover is prevented from being blocked seriously, and the service life of the filter cover is prolonged. And the feeding speed and the discharging speed in the desanding cylinder are slightly different and are relatively stable, so that blockage in the desanding cylinder is avoided, and the desanding effect is improved.

The utility model discloses an improved sand raking device of large-scale air separation equipment, and particularly relates to the field of air separation equipment, which comprises a movable base, a water tank is supported at the top end of the movable base, a heater is connected onto the water tank, a support plate is supported on one side of the top end of the water tank, and a water conveying pipe is mounted on the support plate. One end of the water conveying pipe is rotatably connected with a sand raking assembly, the other end of the water conveying pipe is provided with a connecting pipe, one end of the connecting pipe is connected with a water pump, the water pumping end of the water pump is arranged in the water tank, a driving assembly is installed on the supporting plate, and the output end of the driving assembly is in meshed connection with the outside of one end of the sand raking assembly. The connecting pipe is a stainless steel pipe, and a shaft sleeve is connected between the connecting pipe and the sand raking assembly. The device can directly and conveniently move and directly go deep into a pearlife discharging end, pearlife can be rapidly raked out in the mode that stirring conveying is matched with hot water melting, and sand raking convenience and efficiency are improved.