4results about How to "Improve sand screening efficiency" patented technology

The utility model relates to the technical field of constructional engineering appliances, and discloses sand screening equipment for constructional engineering, which comprises a machine body, a coarse material port is arranged on the side surface of the machine body, a screen is fixedly mounted on the inner wall of the machine body, and a paving component is arranged at the top of the machine body. According to the sand screening equipment for constructional engineering, the paving assembly is arranged and matched with synchronous rotation of a rotating sleeve and a rotating rod, and at the moment, through guiding and limiting of a convex ball and a wave groove, the rotating sleeve can synchronously conduct small-amplitude reciprocating motion in the vertical direction when rotating; a connecting rod is matched to realize left-right reciprocating motion of an arc-shaped push plate on a paving disc, so that accumulated sand falling onto the paving disc can be intermittently pushed outwards, the sand can be dispersed on a screen along with the continuously rotating paving disc, the condition that the sand is accumulated during feeding is avoided, and the quality of the sand is improved. And normal feeding and sieving of the sand are influenced.

The utility model discloses an oil field fracturing waste liquid desanding device, which relates to the technical field of oil field exploitation and is characterized in that a first cyclone desander is provided with a first liquid inlet, a first sand outlet and a first liquid outlet; the second cyclone desander is provided with a second liquid inlet, a second sand outlet and a second liquid outlet; the separating, filtering and settling tank is provided with a settling tank liquid inlet pipe, a settling tank first sand outlet, a settling tank second sand outlet and a settling tank liquid outlet pipe; the filter screen type filter is provided with a filter liquid inlet, a filter sand outlet and a filter liquid outlet; the water purification tank is provided with a water purification tank liquid inlet; and the sand-water separation tank is provided with a separation tank sand inlet, a separation tank sand outlet and a separation tank liquid outlet. By arranging the sand-water separation tank, accumulated sand discharged from each sand outlet is dehydrated, and separated clear water flows back to the first liquid inlet for circulation, so that the sand removal recovery rate and the clear water utilization rate of the oilfield fracturing waste liquid are improved.

The utility model discloses a building construction sand screening machine which comprises a material injection hopper, a material feeding piece is arranged outside the material injection hopper, two sets of supporting plates are fixedly connected to the outer surface of the material injection hopper, two sand screening frames are arranged below the material injection hopper, and supporting pieces are arranged on the sides, close to each other, of the two sets of supporting plates. Bearing rings are embedded in the side faces, close to each other, of the two supporting plates. According to the building construction sand screening machine, by means of the arrangement of the feeding piece, a gear motor can drive a driving rod and a bidirectional spiral feeding blade plate to operate, bidirectional pushing of sand in a material injection hopper can be achieved, the sand can continuously slide to the positions above two sand screening frames through two material injection pipes, the tedious operation of frequent manual material injection is avoided, and the working efficiency is improved. The sand screening operation can be continuously and stably carried out, and the two sand screening frames are driven by the vibration motor to generate vibration, so that sand can be fully screened in the two sand screening frames. The effect of bidirectional sand screening at the same time is achieved, and the sand screening efficiency is improved.

This utility model discloses a roller pressure rod structure for a cat litter box, including symmetrically arranged shaft grooves and a flip-up pressure rod, a locking assembly at the free end of the pressure rod, and a rotating support assembly. The shaft groove is a semi-circular groove with an open top. The pressure rod is hinged to the edge of the shaft groove opening via a shaft seat. When closed, the pressure rod and shaft groove fit together to form a circular ring that embraces the rotating shaft. When open, it allows the rotating shaft of the litter box roller to disengage. The locking assembly achieves stable locking and quick manual unlocking of the pressure rod through a hook, a seat, and a return spring. The rotating support assembly consists of the shaft groove, a roller groove on the inner side of the pressure rod, and a roller, converting sliding friction into rolling friction, reducing resistance and wear. The purpose of this utility model is to provide a solution that solves the problems of slow disassembly, difficult cleaning, and easy wear of traditional screw fixing methods, as well as the unreliable locking of existing snap-fit ​​structures, thereby achieving "one-click opening and closing" for quick disassembly, improving cleaning efficiency and user experience, and significantly enhancing the user experience.