6results about How to "Stable process parameters" patented technology

The utility model provides a tubular heating furnace burner assembly with an automatic ignition function, which comprises a main control panel and a plurality of groups of burners, the main control panel is provided with a plurality of groups of burner control and display components, and each group of burner control and display component is respectively connected with the corresponding burner; and each group of combustors comprises a pulse igniter, a thermocouple electromagnetic valve, an ignition probe and a combustor nozzle. After an ignition switch is started, a pulse igniter discharges, an ignition probe forms electric sparks near a burner nozzle, meanwhile, a fuel gas adjusting valve is opened, and ignition can be completed, so that the ignition time is saved, the one-time ignition success rate is increased, and the stability of technological parameters of a heating furnace is guaranteed; fluctuation of technological parameters such as flow, temperature and pressure of a heating furnace system caused by long-time unsuccessful ignition is avoided, and unqualified product quality of the device is influenced. By adding the thermocouple induction needle, the thermocouple electromagnetic valve can be cut off immediately when the heating furnace flames out, and safe and stable operation of the device is protected.

This invention discloses a method for simultaneously separating multiple active ingredients from *Pterocarya stenoptera* essential oil, belonging to the field of natural product separation and purification technology. The invention includes the following steps: (1) sequentially subjecting *Pterocarya stenoptera* to steam distillation and molecular distillation to obtain *Pterocarya stenoptera* essential oil; (2) subjecting the *Pterocarya stenoptera* essential oil to dehydration and degassing to obtain pretreated essential oil; (3) subjecting the pretreated essential oil to two-stage molecular distillation to obtain fraction 1, fraction 2, and residual liquid; (4) subjecting fraction 1, fraction 2, and residual liquid to vacuum precision distillation to simultaneously separate multiple active ingredients from *Pterocarya stenoptera* essential oil. This invention features a green and environmentally friendly process, no organic solvent residue, low energy consumption, and strong controllability, enabling continuous industrial production. The purity of each monomer product is ≥98%, with the main component, methyl salicylate, having a purity ≥99%. This fully exploits the resource value of *Pterocarya stenoptera* essential oil and significantly increases the added value of the product.

The invention relates to the technical field of automobile welding fixtures, and discloses an automobile welding fixture with accurate welding points, which comprises a welding table, and further comprises a bracket, a welding point positioning device, a welding point positioning device and a welding point positioning device, the two clamping mechanisms are symmetrically arranged above the welding table and used for clamping the two steel pipes; and the two rotating mechanisms are respectively arranged on the clamping mechanisms. The hydraulic push rod drives the rotating ring, the arc-shaped holes in the rotating ring force all the sliding rods and the movable blocks to synchronously move in the radial direction, the L-shaped clamping blocks are driven to evenly hold the steel pipe from the periphery, and therefore it is guaranteed that the clamping force is evenly distributed, and automatic high-concentricity centering of the steel pipe is achieved; the defects of weld joint misalignment, uneven wall thickness and the like caused by manual clamping eccentricity are fundamentally eliminated, a foundation is laid for forming a high-quality annular butt weld joint, meanwhile, the locking force provided by hydraulic driving is large and adjustable, thermal deformation stress and vibration in the welding process can be effectively resisted, and the clamping state is kept absolutely stable.

The application discloses a kind of linoleic acid waste residue recycling resource scheduling digital management system, it is related to industrial waste residue recycling processing technical field, its technical points are: the physical correlation of waste residue component and equipment multi-order vibration is established, the vibration characteristic spectrum of its processing whole process is mapped by extracting the multidimensional component characteristics of each batch of waste residue, the technical problem that waste residue is regarded as homogenization material when scheduling, vibration risk cannot be predicted is solved;Afterwards, based on the cognition of the vibration characteristics of each batch, instead of passively suffering from the damage of equipment caused by vibration superposition, the core target of full-band vibration energy cancellation is taken, the phase conjugate of each order vibration mode between different batches is calculated, the low resonance batch combination sequence is constructed, and the vibration energy that originally enhances each other is mutually cancelled in the equipment. From the beginning of scheduling decision, prevent the generation of non-steady-state vibration.

The utility model discloses a false eyelash forming support mechanism, including installation workstation, support seat, support station and cylindrical lower mould, the support station through the card embedding structure is connected with support seat, and cylindrical lower mould is detachably installed on support station through screw connection mode, and its arc support surface is equipped with adsorption micropore, and installation workstation bottom is equipped with vacuum air pump, and forms the negative pressure adsorption system through the air pipe and the intercommunication cavity, can stabilize and fix false eyelash base material, and support seat is equipped with pressure sensor and PLC controller, and cooperates four corner guide slide bar structure, realizes accurate pressure control and stable mold closing movement. The utility model discloses installation workstation, support seat, support station and cylindrical lower mould through the setting, have quick die change, accurate positioning, pressure closed loop control and so on advantage, significantly improve false eyelash forming quality and production efficiency, be applicable to the processing production of a variety of false eyelash products.

This utility model discloses a spraying device for an anti-condensation coating on the inner wall of an automotive ventilation duct, belonging to the technical field of automotive ventilation ducts. Its key technical features include a workbench, a duct shifting component for moving the duct as a whole on the top surface of the workbench, a duct stretching component above the duct shifting component, and a duct rotating component for rotating the duct on the top surface of the workbench. This utility model uses the duct stretching component to flatten the folded parts of the corrugated ventilation duct, completely exposing the previously hard-to-reach folded inner wall. Combined with the duct rotating component to make the duct rotate at a uniform speed, and the duct shifting component to move the duct relative to the nozzle at a uniform speed, this achieves uniform spraying of the nozzle onto the inner wall of the ventilation duct without dead angles or blind spots, fundamentally avoiding the risk of localized condensation caused by uneven spraying or missed areas, and greatly improving the anti-condensation performance and reliability of the product.