48results about How to "Improve sand washing effect" patented technology

The invention discloses a cloth sand washing device, belonging to the field of textile production machinery. The cloth feeding support table; the sand washing box is provided with a cloth feeding walking mechanism, which includes two rack tracks arranged on the main support table, and transfer gears are meshed on the two rack tracks. The middle connecting rod and the lifting rod constitute a crank-slider mechanism; the cloth feeding support table is provided with a lower groove, and the bottom of the lower groove is provided with a drop hole that matches the winding shaft of the cloth roll, and a slide rail is connected below the drop hole The cavity, the cavity of the slide rail is gradually lowered from the side of the cloth feeding support table to the side of the cloth rolling support table. The invention can realize the mechanized operation of the shuttle of the cloth head end, can avoid the cloth wrinkle, is beneficial to improve the sand washing effect of the cloth, and also does not need to manually transfer the winding shaft from the side where the cloth feeding support table is located to the side where the cloth rolling support table is located. Greatly reduces the workload of related personnel.

The invention relates to a continuous positive and negative sand washing device for an oil-water well, in particular to a continuous positive and negative integrated sand washing device for an oil well. The device consists of an operation machine, pipelines, a sand washing pipe, an elevator, a pump truck and the like, wherein a self-sealing wellhead is arranged at the upper end of a big four-way joint of the wellhead; the lower end of a sand washing pipe column is provided with a sand washer, and the upper end of the sand washing pipe column is provided with a reversing valve; the sand washing pipe column enters a well casing under the well through the self-sealing wellhead and the big four-way joint; a three-way valve is connected with a water hose and the self-sealing wellhead and is connected with a positive and negative sand washing regulation and control valve bank; the positive and negative sand washing regulation and control valve bank is in threaded connection with the pipelines respectively connected onto the pump truck, a foul solution cylinder, the three-way valve and the big four-way joint; the three-way valve realizes continuous sand washing operation in the process of carrying out continuous single-length sand washing and carrying out subsequent single-length sand washing by cooperation of the opening and closing of pairs of pipe lines with the reversing valve and the self-sealing wellhead; and the positive and negative sand washing regulation and control valve bank completes conversion by adjusting and aligning with four holes which are vertical in pairs on a valve core and eight holes on a valve body, so that the positive and negative continuous sand washing operation is realized.

The invention discloses a rotational flow grit chamber with a guide cylinder, which is provided with a main chamber body, wherein one side of the main chamber body is provided with a water inlet and a water outlet respectively communicated with a water conveyance canal, and the side of a chamber wall, close to the water outlet, is provided with a partition plate; a sand collecting hopper is arranged in the center of the bottom of the chamber body, the guide cylinder is arranged above the sand collecting hopper, the lower part of the guide cylinder is of a thick cylinder body, the upper end of the guide cylinder is provided with a thin cylinder body in which a hollow shaft is arranged, the lower end of the hollow shaft is provided with an impeller arranged in the thin cylinder body, the hollow shaft is internally provided with a sand conveying pipe, and the lower end of the sand conveying pipe is communicated with an air lift pump or slurry pump; and the hollow shaft is in transmission connection with a speed-adjustable motor. The rotational flow grit chamber with the guide cylinder is suitable for removing sand grains in a water body in a pipeline or canal, reasonable and perfect in structure and better in sand removal effect as compared with the traditional sand removal device.