3results about How to "Reduce cavities" patented technology

The application discloses a repairing method for a large-depth-ratio metal narrow-slot over-cutting and over-difference, which comprises the following steps: 1) cutting to obtain a repairing sheet; 2) milling the repairing sheet; 3) spraying a layer of powdered filler metal on a bonding surface of the repairing sheet to form a filler metal layer; 4) milling or grinding the filler metal layer to make the thickness of the filler metal layer meet the brazing gap requirement; 5) processing a pad; 6) pre-preparing filler metal at each inclined chamfer of the repairing sheet, loading the repairing sheet into the narrow slot, loading the pad into the narrow slot, and tightly fixing the repairing sheet; 7) supplementing the filler metal; 8) performing high-temperature vacuum brazing; and after the welding is completed, processing the pad and the repairing sheet to remove the quantity and restore the narrow-slot size required by the design. The brazing strength is improved by pre-preparing the filler metal through thermal spraying and by thermal expansion difference, the narrow slot is repaired under the condition that the welding strength meets the requirement, and the production cost is effectively saved.

This application discloses a packaging device for processing dairy cow concentrate supplements, relating to the field of concentrate supplement processing technology. The device includes a plate body with a support frame, two clamping mechanisms, and a shaking mechanism fixedly installed on its top surface. The two clamping mechanisms and the shaking mechanism are located inside the support frame. A storage tank is fixedly installed on the top surface of the support frame. The clamping mechanism includes a fixing plate, which is fixedly installed on one side of the top surface of the plate body. By setting two symmetrically distributed clamping mechanisms, and using multiple pull plates on both sides to pull the bag opening in conjunction with baffles, the opening of the packaging bag can be opened, facilitating the filling of the packaging bag with concentrate supplements and improving the usage effect. The shaking mechanism shakes the packaging bag containing the concentrate supplements, making the concentrate supplements inside more compact, reducing the cavity at the bottom of the packaging bag, and improving the packaging effect.

The utility model provides a valve positioner, and belongs to the technical field of explosion suppression of valve positioners. The valve positioner comprises a shell and a feedback shaft assembly, the feedback shaft assembly comprises a bearing mechanism, a first main shaft and a second main shaft, the first main shaft and the second main shaft can be kept static relatively, the first main shaft and the second main shaft are configured to be of independent forming structures respectively, the bearing mechanism is connected with the shell, and the second main shaft is connected to the bearing mechanism. The first main shaft is provided with a feedback part protruding out of the first main shaft in the radial direction, the feedback part is used for feeding back the position of the feedback shaft assembly, and the end, deviating from the first main shaft in the axial direction, of the second main shaft is connected with an actuator matched with the valve positioner so that the feedback part can feed back the position of the actuator. According to the valve positioner, the production cost of the valve positioner can be reduced, and the explosion-proof performance of the valve positioner can be improved.