41results about How to "Uniform and stable flow rate" patented technology

The invention discloses a runner structure of a rubber mold. A runner comprises a first-stage runner with a circular cross section, at least two second-stage runners, two chambers used for overturningrubber materials and a third-stage runner. The middle portion of the first-stage runner communicates with a rubber injection hole. The two ends of the first-stage runner are connected with the chambers correspondingly. The first-stage runner comprises an upper half runner arranged on a runner plate and a lower half runner arranged on an upper mold plate. Each chamber comprises an inlet connectionpipe and at least one outlet connection pipe, wherein the inlet connection pipe is composed of an upper half inlet connection pipe arranged on the runner plate and a lower half inlet connection pipearranged on the upper mold plate, the cross section of the upper half inlet connection pipe is in an inverted-U shape, the cross section of each outlet connection pipe is in a U shape, and the outletconnection pipes are arranged on the upper mold plate. The runner structure has the beneficial effects that the rubber materials pass through the chambers which are used for overturning the rubber materials, the rubber materials at the position of an inner core and the rubber materials at the positions attaching to the wall of the runner are mixed to enable the temperature to be uniform, flowing is more balanced, forming of a product is facilitated better, and the vulcanizing efficiency of the product in a cavity and the yield are increased.

The invention discloses an aluminum alloy extrusion die. The die comprises a die shell, and an extrusion chamber and a die bridge which are arranged in the die shell, the die bridge is connected with the die shell, the extrusion chamber is divided into N extrusion subchambers; and the die bridge comprises a first outer wall and a second outer wall, the vertical section of the die bridge comprises a first vertical section portion, and the first vertical section portion gradually narrows along the pushed extrusion direction of fluidic aluminum alloy, wherein an angle between the first outer wall and the second outer wall in the first vertical section portion is a first predetermined angle, and extends along a first predetermined length. The die bridge is arranged in a feeding chamber to make the fluidic aluminum alloy divided by the die bridge and the fluidic aluminum alloy entering the center of the feeding chamber blocked and rubbed by the die bridge in order to realize slow flow in the extrusion process, so the flow velocities of center metal and edge metal are balanced, and the discontinuity phenomenon is reduced.

The invention discloses a device for measuring the density and the pH value of slurry. The device comprises an air sampling pipe component, a densitometer, a first pH meter and a second pH meter, wherein the air sampling pipe component comprises a first branch pipe, a second branch pipe, a third branch pipe, a fourth branch pipe and a fifth branch pipe; the lower end of the first branch pipe is connected with the lower end of an absorption tower; the first pH meter is inserted into the first branch pipe; the second branch pipe is horizontally communicated with the first branch pipe; the free end of the second branch pipe is connected with a flushing water pipe; the upper end and lower end of the third branch pipe are respectively communicated with the lower ends of the first branch pipe and the densitometer; the upper end of the densitometer is communicated with the lower end of the fourth branch pipe; the second pH meter is inserted into the fourth branch pipe; the fifth branch pipe is vertically communicated with the fourth branch pipe; and the central lines of the third branch pipe, the fourth branch pipe and the densitometer are positioned on the same straight line and are parallel to the wall of the absorption tower. The device for measuring the density and the pH value of slurry can prolong the service life of the densitometer and the pH meters and reduce the maintenanceworkload of field equipment.