9results about How to "Achieve leak" patented technology

The application provides a reduction tail gas filtering system and a dust collecting device, and relates to the technical field of chemical production. The reduction tail gas filtering system comprises a sealing part, a first through hole is arranged at the top of the outer side of the sealing part, the sealing part is connected with a dust separation device through a first pipeline, the dust separation device is connected with a filtering device through a second pipeline, and the positions of the dust separation device and the filtering device are higher than the position of the sealing part; a dust bag is arranged in the sealing part, the dust bag comprises gas phase hot silane and silicon powder, the silicon powder comprises first type silicon powder, second type silicon powder and third type silicon powder; the dust separation device is used for separating the gas phase hot silane and the third type silicon powder in the first mixture from the first mixture and conveying them to the filtering device; and the filtering device is used for separating the gas phase hot silane and the third type silicon powder. The application can provide a closed reduction tail gas filtering system for the secondary collection stage of silicon powder and prevent coarse particle dust from accumulating.

The present invention discloses a vane pump with anti-leakage function for hydraulic equipment, which belongs to the technical field of vane pump equipment, and includes a support, a base shell assembly and a vane assembly. The support is used for fixed installation, and the base shell assembly includes a shell and an end cover. The shell has a cylindrical cavity, the opening of the cavity is sealed by the end cover, and is fixed by bolts passing through the end cover. The shell is fixed to the support by bolts, and the end face tube of the shell is penetrated by a plurality of through holes. The fixing bolts are installed at both ends of the through holes to complete the sealing of the ends of the through holes. The vane assembly includes a runner, a vane and a shaft body. A coaxially distributed shaft body is installed in the shell, a runner is eccentrically installed on the shaft body, and a plurality of retractable vanes are installed on the runner. The invention fixes the vane pump on the hydraulic equipment through the support provided, so as to facilitate the transmission connection between the shaft body and the output shaft of the engine.

The present invention discloses an intelligent material sealing gas device and method, and a screw conveyor. The device and the screw conveyor include a shell, a main shaft is provided in the shell, and at least two disconnected spiral blades are provided on the main shaft, an interruption zone is provided between two adjacent spiral blades, and a barrier valve is provided in the interruption zone. The barrier valve includes a valve plate that can move up and down in the shell, and an actuator for controlling the up and down movement of the valve plate is connected to the barrier valve. A material level detector is also provided on the shell, and the actuator and the material level detector are connected to a controller. The device of the present invention has the advantages of being able to adapt to changes in material properties and production load changes, sustainably maintaining a gas-locked material seal, and having a good sealing effect. When used to construct a screw conveyor, it can not only improve production efficiency and meet production needs, but also can timely eliminate the backflow or leakage of gas and dust, and can effectively eliminate safety hazards, environmental pollution, heat loss and other adverse effects. It has high use value and good application prospects.

The utility model provides a novel flame gun, and belongs to the field of flame guns. The problems that an existing flame gun is serious in gas loss and cannot work continuously are solved. The novel flame gun comprises a flame gun body, an air valve and an ignition device are installed in the flame gun body, an installation cavity is formed in the flame gun body, the air valve and the ignition device are arranged in the installation cavity in an up-down structure, an ignition switch piece is arranged on the flame gun body, and a limiting assembly is arranged on the flame gun body. The ignition switch piece comprises two button pieces which are connected with the ignition device and the air valve in a matched mode respectively and a synchronizing piece which is used for installing the button pieces and used for synchronously controlling the button pieces to press down and ignite, the limiting assembly comprises a limiting rod and a reset spring, and the limiting rod is arranged on the side wall of the flame gun body in a penetrating mode and penetrates into the installation cavity. The reset spring is located between the flame gun body and the limiting rod. The utility model has the advantages of energy conservation and continuous work.

This application provides a vehicle control method and a vehicle system. The catalyst used in the vehicle's SCR reactor includes a vanadium-based catalyst. The method includes: determining a target turbine inlet temperature corresponding to the current first parameter as a target turbine inlet temperature based on a first predetermined relationship and a current first parameter; calculating a target turbine temperature drop corresponding to the current second parameter as a target turbine temperature drop based on a first model and a current second parameter, wherein the first model is a model characterizing the correspondence between the second parameter and the turbine temperature drop; determining a corresponding SCR inlet temperature based on the second predetermined relationship, the target turbine inlet temperature, the target turbine temperature drop, the current urea injection quantity, the current exhaust gas heat transfer coefficient, and the current pipeline temperature of the transmission pipeline, thereby obtaining the target SCR inlet temperature; and controlling a third parameter of the vehicle based on the target SCR inlet temperature and a preset SCR inlet temperature, such that the controlled actual SCR inlet temperature is lower than the preset SCR inlet temperature.

The invention belongs to the technical field of sample preservation, and discloses a sample inspection and preservation device used in the field of disease prevention and control, the sample inspection and preservation device comprises an outer box mechanism, a cover body mechanism is arranged at the top of the outer box mechanism, a vacuum pump is arranged on one side of the short end of the outer wall of the outer box mechanism in a penetrating manner, and mutually symmetrical hinges are arranged on one side of the long end of the outer wall of the outer box mechanism; and cushioning mechanisms are arranged on the opposite sides of the inner walls of the outer box mechanism and the cover body mechanism correspondingly, an inner box mechanism is arranged at the top of the cushioning mechanism located at the inner bottom of the outer box mechanism, and the double cushioning effect is achieved through sliding movement of the cushioning mechanisms in sliding grooves through cushioning springs and sliding blocks. By means of the design, the cushioning performance is enhanced, external impact energy can be effectively absorbed and dispersed, a sample is protected against damage, the sliding blocks are connected through the linkage arms, and a stable cushioning structure is formed. By means of the linkage design, the cushioning assemblies can work cooperatively, and the cushioning efficiency is improved.

This utility model relates to the field of bathroom product technology, and in particular to a shower head water outlet panel structure for massage and hair combing. It includes: a sealed bottom cover, a sealed top cover on the sealed bottom cover, a water outlet cavity assembly inside the sealed top cover, and a water inlet on one side of the sealed top cover. This utility model, by setting up the water outlet cavity assembly, provides stable support for the top plate with supporting ribs, enabling it to withstand the dual pressure from the components installed on it and the water pressure, ensuring structural stability. Secondly, the circular hole on the top plate provides a channel for water to enter the water outlet column, ensuring smooth water flow. The guide column provides precise guidance for the extension and retraction movement of the water outlet column, effectively preventing the water outlet column from shifting or shaking, greatly improving the accuracy and stability of the massage and combing function. At the same time, each water outlet column, as an independent unit, can flexibly extend and retract according to the pressure on the skin, simulating a realistic massage action to achieve a hair combing effect.

The self-flow-guiding sealing impeller comprises an impeller body used for a molten aluminum pump, a plurality of reverse blades are formed on the side walls of the two ends of the impeller body through a plurality of spiral grooves, the reverse blades distributed on the side walls of the two ends of the impeller body are symmetrically arranged, and the impeller body is rotationally installed in a volute of the molten aluminum pump. The reverse blades are additionally arranged through the spiral grooves, high-pressure low-flow molten aluminum generated by the reverse blades towards the liquid outlet in the middle of the impeller is used for counteracting leaked molten aluminum, the molten aluminum forms internal and external self flow guide through the spiral grooves, liquid sealing between the impeller and the volute of the molten aluminum pump is achieved, and the molten aluminum is prevented from leaking; the pressure and the use efficiency of the impeller are improved.