4results about How to "Change density" patented technology

The utility model relates to the technical field of PCBs (printed circuit boards), and discloses a device for guaranteeing the stability of automatic adding overflow of HDI (high density interconnect) products of PCBs, which comprises a liquid medicine bin, a top cover plate is fixedly connected to the upper top end of the liquid medicine bin, and the upper top end of the top cover plate penetrates into the liquid medicine bin and is fixedly connected with a liquid medicine adding pipe for adding medicine. According to the utility model, the aeration mechanism is arranged, the medicament is added into the medicament bin through the medicament adding pipe, and the medicament exists in the medicament bin, so that when the density of the new medicament is smaller than that of the original medicament, the new medicament is extruded to the surface after being in contact with the original medicament, and the bath solution cannot be replaced; at the moment, an aeration mechanism can be adopted to accelerate mixing of chemicals in the chemical bin, so that the density between the new chemicals and the original chemicals is rapidly changed, and the situation that the density of the new chemicals is too low, the new chemicals are squeezed to the surface by the original chemicals, the new chemicals are discharged and cannot be replaced, and the processing quality of products is affected is avoided.

The application discloses a kind of experimental apparatus of synthesizing different component natural gas hydrate, it is related to natural gas hydrate synthesis technical field, it includes: hydrate generation unit, separable material adding unit, ball valve pressure maintaining unit and control and detection unit, hydrate generation unit includes hydrate generation bucket, the hydrate generation bucket is used to reaction generation with metal tracer particle hydrate;Separable material adding unit is used to add metal tracer particle in hydrate reaction process;Ball valve pressure maintaining unit is arranged between the material adding unit and the hydrate generation unit, for controlling the intercommunication and closure of both;Control and detection unit is used to control motor in the material adding unit moves according to instruction, and is used to receive, process and show the data of various sensors of the hydrate generation unit.The application can be synthesized while hydrate, can be added according to research needs even or layer by layer suitable metal tracer particle.

The utility model relates to the technical field of traditional Chinese medicine processing devices, in particular to an anti-blocking blanking mechanism of a granulator for producing traditional Chinese medicine granules, which comprises a flaking mechanism positioned on a machine body and comprises a feeding barrel, a rotating ring connected with the lower end of the feeding barrel through an output pipe and a feeding barrel connected with the rotating ring through an output pipe. The rotating ring is connected with a driving gear through an inner gear face, the driving gear is connected with a conical part, the rotating ring is connected with a driving gear through an outer gear face, and the conical part makes contact with the output pipe through a threaded groove. The device has the advantages that the rotating ring can be driven by the driving gear to rotate, the driven gear can be driven by rotation of the rotating ring to rotate, then the conical part is driven to rotate, threads on the surface of the conical part can make contact with traditional Chinese medicine particles in the mixing process, and therefore the traditional Chinese medicine particles at the bottom end are driven to move when blockage occurs; therefore, the bottom traditional Chinese medicine particle density is changed, and blockage is avoided.

The application discloses a 3D-printed implant with arc-shaped pipelines and a preparation method thereof, which is used for being implanted into an alveolar bone implantation nest of a patient, and the implant comprises a dense core body and a bone bonding part wrapped outside the dense core body; the bone bonding part comprises a first porous part and a second porous part; the first porous part is connected with the top surface of the second porous part; a plurality of arc-shaped pipelines are arranged in the first porous part; the arc-shaped pipelines are provided with openings at two ends and are communicated with the outside through the openings; the arc-shaped pipelines are extended into a cleaning part through the openings to clean the interiors of the arc-shaped pipelines. The interiors of the arc-shaped pipelines can load drugs (such as BMP-2, VEGF, PDGF and the like) to induce the rapid growth of bone tissues. The implant has the characteristics of good strength, matched elastic modulus of the bone bonding part and the patient and easy cleaning. The implant has a wide indication and is suitable for various edentulous patients, especially for the cases of insufficient alveolar bone mass or bone density.