8 results about "Chemical used" patented technology

This utility model discloses an integrated device for precise metering, mixing, and spraying of chemicals using a vibration-type method, belonging to the field of tailings treatment technology. It includes a main shell, a chemical input device, a mixing device, a spraying device, and a conveying device. The chemical input device is located on top of the main shell and includes a mixing chamber and a connecting unit. The mixing chamber is located on top of the main shell and connected to the spraying device via the connecting unit. The chemical input device is connected to the spraying device located inside the main shell. The spraying device is used to input chemicals into the mixing chamber inside the main shell. A raw material feeding port is located at the top of the main shell and connects to the mixing chamber. The mixing device is located inside the mixing chamber and is used to mix the special chemicals and raw materials fed into the mixing chamber. A conveying device is connected below the mixing chamber and is used to transport the mixed mixture to a pressing device. This utility model has the advantages of precisely controlling the amount of chemicals used and achieving uniform mixing.

The disclosed apparatus for mixing and supplying chemicals used for semiconductor processes according to the present application includes: raw chemical supply lines for externally supplying chemicals; and a mixing line for receiving the chemicals from the raw chemical supply lines to produce a chemical mixture; wherein one end of each of the raw chemical supply lines is connected to a chemical storage tank in which the chemicals are stored, and a chemical flow controller for controlling the flow rate of the chemicals is installed in each of the raw chemical supply lines, and the chemical flow controllers installed in each of the raw chemical supply lines are controlled in multiple channels using one controller, and the flow rate of each of the chemicals is preset corresponding to a mixing ratio of the chemicals and stored as a preset value, and when the chemicals are supplied for mixing, the flow rates of the chemicals are simultaneously controlled using the preset values corresponding to the mixing ratio, which are previously stored.

A method for manufacturing a histologic tissue sample support device includes molding a tissue cassette, molding a frame, and coupling the tissue cassette to the frame by assembling a frame-cassette connector. The tissue cassette has a recess including at least one side wall and a bottom wall. The tissue cassette is formed of a first material that can be successfully sectioned in a microtome and is resistant to degradation from solvents and chemicals used to fix, process and stain tissue. The frame includes a bottom edge and is formed of a second material different from the first material and more rigid than the first material. The frame-cassette connector includes a first retaining structure formed integrally with the frame extending through a second retaining structure formed integrally with the cassette. The frame is capable of being decoupled from the cassette by separating the frame-cassette connector.

This application provides a method for manufacturing a circuit board, relating to the field of circuit board manufacturing technology. The method includes: providing a sample board; slicing the sample board to form sampling holes; laminating a wiring layer onto the sliced ​​sample board; and removing the portion of the wiring layer opposite to the sampling holes. This method, by removing the portion of the wiring layer opposite to the sampling holes after laminating the wiring layer onto the sliced ​​sample board, avoids the formation of a cavity structure in the sliced ​​circuit board, prevents the sampling holes from harboring chemicals used in wet processing, and effectively prevents these chemicals from seeping into the internal layer structure of the circuit board, thus helping to prevent circuit board delamination.

A histologic tissue sample support device includes a tissue cassette, a frame, and a lid. The tissue cassette has a recess including at least one side wall and a bottom wall and is formed of material that can be successfully sectioned in a microtome and is resistant to degradation from solvents and chemicals used to fix, process and stain tissue. The lid is coupled to the frame and includes a platen configured to be received within the recess of the tissue cassette. The tissue cassette is movably coupled to the frame by a frame-cassette connector. The lid and the tissue cassette are capable of moving from a first position to a second position with respect to the frame, and in the second position the bottom wall and at least a portion of the side wall extend beyond a bottom edge of the frame for sectioning in a microtome.

The application relates to the technical field of semiconductors, in particular to a purification system for semiconductor wet chemicals, which comprises a negative pressure assembly, a bottle body capable of containing a high-purity degassing membrane, a first sealing plate and a second sealing plate arranged at two ends of the bottle body, a liquid inlet arranged on the outer wall of the first sealing plate, a liquid outlet, a gas outlet, a liquid outlet arranged on the outer wall of the second sealing plate, and a two-way diaphragm winding structure formed by a center column and an isolation column, which effectively enlarges the contact area of the wet chemicals, avoids the short circuit problem of the flow path, and greatly improves the degassing efficiency. Meanwhile, a full-sealing gasket sealing design is combined to prevent the invasion of external impurities and secondary pollution caused by chemical oxidation.

This method facilitates the impregnation of wood with chemicals used in wood treatment while maintaining the aesthetic appeal of the wood's surface. [Solution] The wood 20 for chemical treatment has a surface portion 21 that comes into contact with the chemicals used in the chemical treatment of the wood, and a plurality of holes 22 that open in the surface portion 21. The visible light reflectance of the surface portion 21 of the wood 20 is 90 to 100% of the visible light reflectance of the surface portion 21 before the formation of the plurality of holes 22.

This utility model discloses a corrosion-resistant stacking drum for chemical use, relating to the field of chemical drum technology. It includes a drum body composed of an inner layer, a barrier layer, a structural layer, and an outer layer. A feed pipe communicating with the interior of the drum body is fixedly connected to the top of the drum body, and a drum lid is threaded onto the feed pipe. A fixing rod is fixedly connected to the top of the inner drum body, and four corrugated plates are circumferentially fixed to the outer wall of the fixing rod. The other end of each corrugated plate is fixedly connected to the inner wall of the drum body. This utility model comprehensively improves the strength of the drum body, stacking stability, and operational safety by using a multi-layered structure to block corrosion, bottom support and positioning for stable stacking, corrugated plates to disperse kinetic energy and suppress liquid surface sloshing, and the dimensional matching of components such as handles to ensure stacking stability, while reducing the risk of chemical splashing.