30results about How to "Easy to change liquid" patented technology

A super-hydrophobic micro-pit array chip, a preparation method therefor, and applications thereof. The micro-pit array chip comprises a micro-pit array layer, and the surface on which micro-pits are formed, of the micro-pit array layer is a super-hydrophobic surface except micro-pits or the bottoms of the micro-pits. The micro-pit array chip may be: 1) the surface except the micro-pits is the super-hydrophobic surface, and the micro-pit array chip comprises the micro-pit array layer and a super-hydrophobic layer attached to the surface of the micro-pit array layer; and 2) the surface except the bottoms of the micro-pits is a super-hydrophobic surface, the micro-pit array layer comprises a substrate layer and a micropore array layer attached to the surface of a substrate, and micropore array layer is made of a super-hydrophobic material. By means of the micro-pit array chip, complete isolation among cell microarrays can be implemented at a very low cost in the cell microarray construction process, cross contamination among cell arrays is avoided, good biocompatibility is ensured, and the micro-pit array chip has no obvious impact on normal growth of various cells and is suitable for high-throughput cell detection and analysis.

The invention discloses an air purifier, comprising a purifier main body, the lower end surface of the purifier main body is fixedly connected with a bearing plate, the lower end surface of the bearing plate is fixedly connected with a support base plate, and the support base plate and the purifier main body A cleaning device is slidably connected between them, the lower part of the side end surface of the purifier main body is provided with an air inlet, the edge of the upper end surface of the purifier main body is provided with an air outlet, and the middle part of the upper end surface of the purifier main body is embedded with a control device , the lower end surface of the control device is fixedly equipped with a drainage fan, the lower end surface of the drainage fan is fixedly connected with a transmission main shaft, the transmission main shaft rotates coaxially with the drainage fan, and the side end surface of the transmission main shaft is fixedly connected with a driving gear, The side end surface of the drive shaft is slidably connected with a rotating filter device, which can realize high-efficiency filtration of the purifier and self-cleaning of the filter screen, and the device is convenient to use and has a high energy utilization rate.

The invention discloses a novel oral cold compress bag. The novel oral cold compress bag comprises a connecting chamber, wherein one side of an inner cavity of the connecting chamber is fixedly connected with a spring, the end, away from the inner cavity of the connecting chamber, of the spring is fixedly connected with a movable plate, one side of the movable plate is fixedly connected with a movable rod, the end, away from the movable plate, of the movable rod penetrates through the connecting chamber and extends to the outer portion of the connecting chamber, the end, extending to the outerportion of the connecting chamber, of the movable rod is fixedly connected with a push plate, and the side, located on the bottom of the movable rod, of the inner cavity of the connecting chamber isinner cavity of the connecting chamber is fixedly connected with a positioning plate. The invention relates to the technical field of medical auxiliary instruments. The novel oral cold compress bag has the advantages that when the temperature of liquid in the cold compress bag is not up to standard, auxiliary tools are not needed, the liquid in the cold compress bag can be replaced very conveniently through manual operation, thereby providing convenience for a user to use the cold compress bag and ensuring the cold compress effect well, the length of the cold compress bag can be adjusted appropriately, and the cold compress bag can be applied to oral cavities with different sizes, thereby increasing the application range of the cold compress bag.

The invention provides a bipolar battery stack. A tubular liquid injection channel is formed by a monopolar sheet and a liquid port located at the same position on the bipolar sheet, and a liquid injection channel is arranged in the liquid injection channel of the bipolar cell stack. and sealing device. The liquid injection and sealing device includes a cylinder with a liquid injection port. The cylinder is a movable cylinder that can rotate or move up and down. The rotation or movement of the movable cylinder realizes the connection between the liquid injection port and the bipolar electrode sheet The communication or staggering of the electrolyte flow channel; or, the cylinder is a fixed cylinder fixed in the liquid injection channel, and the liquid injection port of the fixed cylinder is communicated with the electrolyte flow channel of the bipolar electrode sheet, and in the fixed cylinder A movable member is provided, and the liquid injection port can be opened or closed through the rotation or up and down movement of the movable member in the fixed cylinder. The use of the liquid injection and sealing device can not only effectively complete the injection of the electrolyte, but also effectively solve the problem of the internal short circuit of the battery stack caused by the liquid contact of the electrolyte through the liquid injection channel.

The invention discloses a method for washing insulin crystals or insulin analog crystals. The method uses a hollow fiber membrane to treat insulin crystal suspension or insulin analog crystal suspension, and effectively combines crystal washing, liquid exchange and crystal suspension concentration, which enhances the washing effect, and the product has low solvent residue and ignition residue; it can realize continuous Automatic operation, simple process, convenient operation, improved process stability and production efficiency, especially suitable for large-scale industrial production.