12results about How to "Evenly vented" patented technology

The invention relates to a vacuum chamber for a high-altitude simulation test of a liquid rocket engine, belongs to the technical field of aerospace liquid rocket engine tests, and solves the technical problems of single function, difficulty in operation and poor safety of a traditional vacuum chamber. The cabin comprises a cabin body, a cabin door, a heat sink system, a fire fighting system, a gas replacement system, an anti-arch blasting device, a blowdown system, a mounting platform, an operation platform, a propellant supply pipeline and measurement and control equipment. The cabin body is cubic, and the working pressure in the cabin body is 0-0.1 MPa. The cabin door is used for entering and exiting of personnel, small ground equipment, an engine and a thrust measuring device. The heat sink system, the fire fighting system, the gas replacement system, the sewage discharge system, the mounting platform and the propellant supply pipeline are mounted on the cabin body, and the measurement and control equipment is a transmission channel for engine control and measurement signals. The vacuum chamber is used for a liquid rocket engine high-altitude simulation test.

The invention provides an air inlet device and semiconductor equipment. The gas inlet device comprises a flow uniformizing structure and a gas distribution structure. The flow uniformizing structure comprises a plurality of annular flow uniformizing cavities and a plurality of air inlet pipelines correspondingly communicating with the annular flow uniformizing cavities. A plurality of first air outlet holes which are uniformly distributed are formed in the radial outer ring side surface of each annular uniform flow cavity; the gas distribution structure comprises a plurality of annular gas distribution cavities which are coaxially arranged with the annular flow uniformizing cavity; and the plurality of second air outlet holes are non-uniformly distributed on the outer peripheral surface of the corresponding annular air distribution cavity. The gas distribution structure can move between a first position and a second position; at the first position, the gas distribution structure surrounds the periphery of the flow uniformizing structure, and the gas inlet end of each annular gas distribution cavity is in sealed communication with the first gas outlet hole, so that gas is discharged non-uniformly through the second gas outlet hole; and at the second position, the gas distribution structure is staggered from the peripheral surface of the flow uniformizing structure, so that the first gas outlet hole is exposed in the semiconductor process chamber, and uniform gas outlet is realized.

The invention relates to the technical field of active filters, and discloses a high-performance anti-interference active filter device, which comprises a protection assembly, a heat dissipation assembly, a cooling assembly and an active filter, and is characterized in that the protection assembly is located at the top of the heat dissipation assembly, the cooling assembly is located in the protection assembly, and the active filter is located at the top of the heat dissipation assembly; the cooling assembly is arranged in the protection assembly and corresponds to the active filter; cooling liquid in a water tank is cooled through a cooling fan and cooling fins, the cooling liquid is input to the outer side of an air conveying pipe through a water pump, the effect of cooling air in the air conveying pipe is achieved, and then the cooled air conducts uniform cold air outlet on the surface of the active filter through a second flow dividing pipe and a third flow dividing pipe. In addition, the cooling liquid is located on the outer side of the protective cover, so that the cooling liquid is prevented from leaking out and making contact with the active filter.

The utility model discloses an electric heating steam pot table that gas comes out evenly, including inner heating cavity and work table, a plurality of evenly distributed mounting holes are seted up on the work table, the mounting hole is provided with detachable gas outlet sleeve, the top of gas outlet sleeve is provided with the connecting ring, the outside of connecting ring is equidistantly arranged with a plurality of connecting horizontal strips, and one end of a plurality of connecting horizontal strips is connected with the inside of arc cap, and arc cap is supported through connecting horizontal strips, and the top of arc cap is concave and forms concave arc top, and the steam of gas outlet sleeve is stably guided to arc cap through concave arc top, and the steam of gas outlet sleeve can be stably guided to concave arc top through the concave arc top of the setting in the middle part of arc cap, and is guided to the outside through the gap between arc cap and connecting ring, thereby steaming the food in the steam drawer, the range of gas is enlarged through arc cap, gas comes out evenly, and the steaming product is heated evenly.

The invention discloses a shaft ventilation type efficient stirrer, and relates to the technical field of stirring equipment.The shaft ventilation type efficient stirrer comprises a tank body, a sealing plate is arranged at an opening in the upper end of the tank body, a feeding port is formed in the sealing plate, and a discharging port is formed in the bottom of the tank body; the bracket is used for bearing the tank body; the center shaft is rotationally arranged at the axis of the sealing plate, the upper end of the center shaft is located above the tank body, the top of the center shaft is communicated with an air source, and the lower end of the center shaft is located in the tank body; the driving assembly is arranged at the upper end of the sealing plate and used for driving the center shaft to rotate; through the three layered aeration units, comprehensive aeration of materials on the upper layer and the lower layer of the tank body is achieved, the defect that existing equipment can only conduct bottom aeration is overcome, meanwhile, the design that the hole diameter is gradually reduced from top to bottom is adopted in a center shaft airflow channel, step-by-step pressurization is achieved in the gas flowing process, the aeration efficiency is improved, and the aeration efficiency is improved. The air outlet resistance caused by lower-layer water pressure is effectively counteracted.

The present invention discloses a Bernoulli suction cup, characterized in that: a plurality of mounting holes are evenly distributed along the circumferential direction on the bottom surface of the suction cup body, an edge PEEK gasket is installed in the mounting hole on the bottom surface of the suction cup body, a quick connector is installed in the center hole on the top surface of the suction cup body, a left screw is installed in the left mounting hole on the top surface of the suction cup body, a left nut is installed at the top of the left screw, a right screw is installed in the right mounting hole on the top surface of the suction cup body, a right nut is installed at the top of the right screw, a right spring is installed on the right screw, a suction cup core is installed in the center groove on the bottom surface of the suction cup body, and a center PEEK gasket is installed in the center hole on the bottom surface of the suction cup core. The present invention has a simple structure, stable and reliable operation, greatly reduces the volume of the suction cup, has extremely low requirements for installation space, has two circles of air outlets inside and outside, and the air outlet is more uniform, can produce a larger and more uniform negative pressure area, is not easy to deform, and has a greatly increased service life.

The present invention discloses a jacket gas equalization structure, a support plate assembly and a heat exchange device using the same, which is composed of a jacket cylinder and a jacket sealing ring, which are arranged on the outer wall of the heat exchanger cylinder and form a closed annular space with the inner wall of the jacket cylinder, and an air equalization hole or groove is opened on the upper part of the outer wall of the heat exchanger cylinder, and the annular space is connected with the heat exchange space in the heat exchanger cylinder through the air equalization hole or groove, and an air inlet or air outlet is arranged on the side wall of the jacket cylinder. The support plate assembly is composed of a plurality of support plates with different vent holes, an air baffle plate, and a bottom rib plate; the support plate with different ventilation notches provides a channel for the flow of refrigerant gas and liquid, reduces the risk of refrigerant liquid flowing along the wall of the heat exchange tube, and is conducive to improving the heat exchange efficiency.

This application provides an air blowing mechanism and a conveying mechanism, relating to the technical field of conveying mechanisms. The air blowing mechanism of this application includes: a base, a first air nozzle disposed on the base, and a second air nozzle disposed on the base; the base has a gas outlet, and the gas outlet has a first reflective wall and a second reflective wall on both sides; the first air nozzle faces the second reflective wall, and the second air nozzle faces the first reflective wall, so as to form a vortex between the first reflective wall and the second reflective wall.

The utility model discloses a gas collection type pulse aerator matched with a self-adaptive MBR (Membrane Biological Reactor) curtain type membrane component, and relates to the technical field of pulse aerators. The gas collection type pulse aerator matched with the self-adaptive MBR curtain type membrane module comprises a gas collection box, a plurality of sludge discharge holes communicated with the gas collection box are formed in the left side and the right side of the gas collection box, and by arranging the sludge discharge holes, when equipment is started again after being shut down, sludge flowing backwards in the gas box can be blown out through air blowing of the sludge discharge holes, it is guaranteed that an air channel is smooth, and the aeration efficiency is improved. A detachable top plate is fixedly installed on the upper surface of the gas collecting box, three pulse distributors are fixedly connected to the upper surface of the detachable top plate, the lower surfaces of the pulse distributors penetrate through the lower surface of the detachable top plate, the pulse distributors at the top end of the detachable top plate are arranged in a matrix three-cavity parallel connection mode, and gas inlet cavities are relatively independently closed; the pulse air outlet holes are arc-shaped air channel strip-shaped air holes, effective inlet air collection can be guaranteed, pulse air outlet is even, and therefore the aeration effect is improved.

A gas supercharging device for a beverage barrel comprises a gas storage container with an opening in the upper end, an inner cover body arranged in the opening, a fixing part with a through hole formed in the middle of the gas storage container in a protruding mode, and a fixing groove formed in the bottom face of the gas storage container; a cover body is arranged at the upper end of the gas storage container; an adsorption substance is placed in the gas storage container; the pressure difference control mechanism comprises a piston arranged in the cover body, a mounting through hole is formed in the middle of the piston, a fixing sleeve with an opening in the lower end is arranged in the piston, and the lower part of the fixing sleeve expands outwards to form a first fixing step; the upper end and the lower end of the compression spring abut against the inner wall of the cover body and the upper end face of the piston; the lower part of the valve rod is inserted into the gas storage container from the through hole of the fixed part, a gas channel is formed in the upper part of the valve rod, and an annular groove is formed in the lower part of the rod body; the upper part of the valve body sleeves the lower part of the valve rod, and the upper end is inserted into the fixing groove of the fixing part; a second fixing step protrudes from the lower part of the inner wall of the valve body; the upper and lower ends of the spring abut against the bottom of the valve rod and the second fixed step; the trigger pushing piece comprises a fixed bottom plate with a through hole in the center; the three trigger pieces are arranged on the outer edge of the fixed bottom plate, and pushing parts are arranged on the lower portions of the trigger pieces and abut against the upper end face of the valve rod.

An air inlet structure comprises an air inlet chamber arranged at the bottom of a combustion chamber, the air inlet chamber is provided with an air inlet hole, a flow guide part is placed above the air inlet hole, the flow guide part is of a porous structure, and the flow guide part corresponds to the bottom of the combustion chamber; the flow guide part is used for guiding the introduced nitrogen, so that the nitrogen introduced into the combustion chamber is uniformly discharged from the bottom, and the atmosphere in the whole combustion chamber is uniformly controlled; wherein the flow guide piece is of a porous structure, so that nitrogen can be effectively and uniformly discharged.

The utility model relates to a photovoltaic silicon wafer cleaning device, in particular to a photovoltaic cleaning bubbling device and a photovoltaic cleaning system. A photovoltaic cleaning bubbling device comprises an outer layer pipe which is symmetrically provided with two sets of first exhaust holes, and the first exhaust holes are arranged in an array mode in the axial direction of the outer layer pipe; the middle-layer pipe is arranged in the outer-layer pipe and provided with a group of second exhaust holes, and the second exhaust holes are arranged in an array mode in the axial direction of the middle-layer pipe; the inner-layer pipe is arranged in the middle-layer pipe and provided with a group of third exhaust holes, and the third exhaust holes are arranged in an array mode in the axial direction of the inner-layer pipe; and gas sequentially passes through the inner-layer pipe, the third exhaust hole, the middle-layer pipe, the second exhaust hole, the outer-layer pipe and the first exhaust hole. The photovoltaic cleaning bubbling device provided by the utility model can not only improve the uniformity of gas mixing, but also realize uniform gas outlet and uniform bubbling size.