Method for producing board layers of freeze dryers by utilizing aluminum alloy sections

[0009] A production method for producing freeze-dryer slabs by using aluminum alloy profiles, characterized in that it consists of the following steps: (1) rolling the aluminum alloy profiles, (2) cutting the aluminum alloy profiles, (3) machining the cut surfaces, (4) Sealing of cutting surfaces at both ends, (5) Processing of liquid inlet and outlet pipes. The rolled aluminum alloy profile described in step (1) is a rolled sheet, and the cross section of the sheet is provided with a number of tube holes. The pipe hole is a rectangular hole. The step (2) of cutting the aluminum alloy profile is to transversely cut the rolled aluminum alloy sheet according to the length. The machining of the cut surface in the step (3) is to process the surface of the cut surface through the groove and the sealing surface. The processing of the through-groove is milling the interval between the tube holes of the aluminum alloy profile, the milling interval is that the same interval is only milled on one end face, and the two ends of the adjacent interval are alternately milled. The step (4) is that the frame strip will seal both ends of the aluminum alloy plate. The step (5) is to process the liquid inlet pipe and the liquid outlet pipe on both sides of the frame strip or profile. The aluminum alloy is made of high-strength corrosion-resistant aluminum alloy profiles. The upper and lower panels of the profiles have a certain thickness. There are multiple support spacers with a certain width and height in the axial direction in the middle of the hollow plate. There are diversion grooves at intervals. The diversion grooves, the supporting spacers and the two sides of the aluminum alloy profile hollow board form a serpentine channel. The front and rear ends of the aluminum alloy profile hollow board are welded and sealed by the frame strips. Liquid inlet and outlet ports are provided on both sides, and the liquid inlet and outlet ports are respectively connected with the head and tail of the serpentine channel. The aluminum alloy profile can be made by splicing a single or multiple aluminum alloy profile hollow plates of different widths. Aluminum alloys can be made of high-strength corrosion-resistant aluminum alloy profiles (6 series), or ultra-high-strength aluminum alloy profiles (7 series) or other series of industrial aluminum profiles - surface oxidation, Anti-corrosion treatment such as electroplating.

[0010] The figure includes aluminum alloy profile hollow panels 1 of different widths, which are characterized in that: the aluminum alloy is made of high-strength corrosion-resistant aluminum alloy profiles, and the upper and lower panels 2 of the profiles have a certain thickness, which can withstand a certain internal and external pressure. There are a plurality of supporting spacers 3 with a certain width and height for support, which is characterized in that: it can support the board layer to ensure that the board surface is flat and not deformed when it is subjected to internal and external pressure, and there are diversion grooves 4 at the front and rear ends of the spacer. : Facilitate the directional flow of silicone oil between the plates 5, the front and rear ends of the plate layer are welded with border strips 6 and the plate layer to prevent leakage of silicone oil. There are liquid inlet and outlet ports 7 at both ends of the frame or on both sides of the profile, which are connected with the inlet and outlet. The liquid pipes 8 are connected, and it is characterized in that: the silicone oil enters the inner plate layer through the liquid inlet pipe and circulates, and then discharges the plate layer through the liquid outlet pipe to play the role of heating and cooling.

[0011] There are strict industry standards and quality requirements for freeze-dried products produced by medical freeze-dryers, including: unchanged biological activity, uniform appearance and color, full shape, firm structure, fast dissolution rate, and low residual moisture. In order to obtain high-quality and high-quality pharmaceutical products, the quality of medical freeze dryer production, especially the quality of laminate production is more critical. The main reason why ordinary materials cannot be used on the medical lyophilizer board is that the corrosion resistance cannot meet the requirements, so the materials that replace stainless steel must meet three requirements: (1) Wide range of sources and low cost, (2) Comprehensive machinery It has excellent performance, easy processing and welding, and can meet the relevant requirements of medical freeze-drying machine layers. (3) It has strong corrosion resistance, high rigidity and excellent thermal conductivity. With the gradual maturity of domestic aluminum alloy manufacturing enterprises and the continuous improvement of production processes, the highly automated production of aluminum alloy profiles ensures that the quality of plate production is much better than that of manual welding. Aluminum alloy profiles replace stainless steel in The application in the layer of medical freeze dryer will become more and more common, and the application prospect will become brighter and brighter.