32results about How to "Avoid scrubbing" patented technology

A fracturing and gravel packing tool has features that prevent well swabbing when the tool is picked up with respect to a set isolation packer. An upper or jet valve allows switching between the squeeze and circulation positions without risk of closing the wash pipe valve. The wash pipe valve can only be closed with multiple movements in opposed direction that occur after a predetermined force is held for a finite time to allow movement that arms the wash pipe valve. The jet valve can prevent fluid loss to the formation when being set down whether the crossover tool is supported on the packer or on the smart collet.

A fracturing and gravel packing tool has features that prevent well swabbing when the tool is picked up with respect to a set isolation packer. An upper or multi-acting circulation valve allows switching between the squeeze and circulation positions without risk of closing the low bottom hole pressure ball valve. The low bottom hole pressure ball valve can only be closed with multiple movements in opposed direction that occur after a predetermined force is held for a finite time to allow movement that arms the low bottom hole pressure ball valve. The multi-acting circulation valve can prevent fluid loss to the formation when being set down with the crossover tool supported or on the reciprocating set down device and the multi-acting circulation valve is closed without risk of closing the wash pipe valve.

A fracturing and gravel packing tool has features that prevent well swabbing when the tool is picked up with respect to a set isolation packer. An upper or jet valve allows switching between the squeeze and circulation positions without risk of closing the wash pipe valve. The wash pipe valve can only be closed with multiple movements in opposed direction that occur after a predetermined force is held for a finite time to allow movement that arms the wash pipe valve. The jet valve can prevent fluid loss to the formation when being set down whether the crossover tool is supported on the packer or on the smart collet.

The field of color masterbatch processing of the present invention is more specifically a plastic color masterbatch and its intelligent preparation system and method. The processing method is: according to the raw materials of different colors, they are sequentially transferred to different mixing intervals in the two collective processing cylinders. Add liquid pigments, liquid dispersion aids and liquid resins, drive the rack to drive four mixing agitators for mixing and stirring; after stirring evenly, stop the drive, and guide the specified mixed liquid into two In the different extrusion molding sections of the collective processing cylinder, close the four manual guide valves, drive the frame to connect the electricity to drive the four combined molding extruders to continuously extrude the mixed raw materials in the two condensate water tanks; multiple times After extrusion, intermittently drive the frame to discharge the color masterbatch after extrusion condensation molding; realize the processing and molding of different color masterbatches at the same time; the materials include pigments, resins and polyethylene low-molecular wax.

The invention relates to the technical field of cylindrical metal container surface pollution layer treatment, in particular to an automatic ultrasonic cleaning process of a feeding container. The process comprises the following steps of firstly, placing a crucible into a strong acid solution, and acid pickling for 90 to 120min; secondly, placing the crucible acid-pickled through the step I into an alkaline solution, and alkaline washing for 8 to 10min; and finally, water washing the crucible alkaline-washed through the step II for 8 to 10min, wherein during the step I acid pickling and step II alkaline washing processes, an ultrasonic wave with a certain power is fed into the acid solution and the alkaline solution. According to the automatic ultrasonic cleaning process of the feeding container provided by the invention, the one-time cleaning qualification rate exceeds 99 percent, and manual scrubbing or secondary washing is avoided.

The invention relates to a flat-panel television protection screen, which comprises a transparent panel, a shading rim which is arranged on the peripheral edge of the transparent panel and a buffering layer which is adhered onto the shading rim, wherein at least one heat radiation device is arranged on the position corresponding to a flat-panel television frame, and the flat-panel television protection screen is characterized in that the heat radiation device comprises a first main contact surface which is contacted with the outer surface of the flat-panel television frame, a second main contact surface which is contacted with the inner surface of the shading frame and one or more heat radiation passages which extends in the length direction of the first main contact surface and the second main contact surface, wherein the first main contact surface is parallel to the second main contact surface, at least one of the two end surfaces formed by an port of one or more heat radiation passages is provided with a ventilation film. The flat-panel television protection screen is used for protecting a flat-panel television display device, simultaneously the heat radiation problem of the protection screen is also solved, and the influence of small particles such as dust, fogdrop and the like on the flat-panel television display device can be effectively avoided.

The invention relates to the field of thermal pots and specifically relates to a home-use intelligent thermal pot. The pot comprises a pot shell, a handle and a cleaning device, wherein the pot shell comprises a hollow rotation body structure and is used to store a liner filled with water, a brush cleaning groove with a T-shaped cross section is formed uniformly along the vertical direction on the outer wall of the pot shell, and a controller used to control automatic operations of the cleaning device is installed in the pot shell; the handle is disposed at the middle part of the outer side of the pot shell and used to lift the pot; the cleaning device is installed on the bottom of the pot shell; the cleaning device comprises a humidity sensor, a No.1 scrubbing unit, a No.2 scrubbing unit, an air pump, an electromagnetic valve, an electric rope and a No.2 sponge; and the No.1 scrubbing unit and the No.2 scrubbing unit comprise a slide block with a T-shaped cross section, a water collection cabin, a sponge clamping sleeve, a No.1 sponge, a buffer spring, a rolling spring and an airbag respectively. According to the invention, water dirt splashed out from the spot shell can be absorbed automatically, and water stains and dust on the pot shell can be scrubbed automatically.