122results about How to "Guaranteed sealed state" patented technology

The invention discloses an electric switching device and a server for a server system. The server is provided with a sealed inner computer case, and hardware provided with the server is arranged in the inner computer case. The electric switching device comprises a through-the-wall mode plug-in piece, an inner side interface and an outer side interface, wherein the through-the-wall mode plug-in piece is arranged on a side plate of the inner computer case in a sealed mode, the inner side interface is formed in the through-the-wall mode plug-in piece and electrically connected with the hardware, and the outer side interface is formed in the through-the-wall mode plug-in piece. The inner computer case contains a liquid state and/or gas state refrigerant which is in electric insulation. According to the electric switching device and the server, the through-the-wall mode plug-in piece arranged on the side plate of the inner computer case of an immersion type cooling server system enables the hardware in the inner computer case to be electrically connected with the outside world, a sealing state of the inner computer case is maintained when the inner computer case is electrically connected with the outside world, meanwhile negative pressure bearing capacity of the inner computer case is improved, the server system can meet immersion type evaporative cooling requirements, and refrigerating efficiency is further improved.

The invention belongs to the field of valves, and particularly discloses a deep sea automatic compensation type full deep seat hydraulic control stop valve. The deep sea automatic compensation type full deep sea hydraulic control stop valve comprises a valve body, a valve bush assembly and a valve core assembly. An inlet and an outlet are formed in the side face of the valve body, the valve bush assembly is mounted in the valve body in an embedded mode, and comprises a spring cap, a compression rod valve bush, a valve core cap, a valve seat, a compression sheet, a push rod valve bush substrateand a plug, the spring cap is connected with the upper end of the valve body, a compression rod balance port is formed in the spring cap, and a groove for mounting a spring is formed in the lower endof the spring cap. A valve port and a valve seat flow guide hole are formed in the valve seat, a valve core cap chamber and a valve core cap circulation hole are formed in the valve core cap, the plug is connected with the lower end of the valve body, and a control port is formed in the plug. The valve core assembly comprises a compression rod, a valve core and a push rod, the compression rod isinserted into the compression rod valve bush and the valve core cap sequentially, the valve core is arranged in a cavity formed between the valve core cap chamber and the valve port, the lower end ofthe push rod is mounted in the push rod valve bush substrate, and the upper end of the push rod is inserted into the compression sheet and the valve seat in sequence. The deep sea automatic compensation type full deep sea hydraulic control stop valve has the advantages of being stable in working property, good in airtightness, capable of achieving automatic compensation and the like.

The invention provides a ball valve with non-contact valve ball and valve seats during rotation. The ball valve comprises a valve body, a ball body arranged in the valve body, a valve rod fixedly connected with the ball body to drive the ball body to rotate, two cam plates and two valve seats, wherein the two valve seats are correspondingly arranged at a first side and a second side of the ball body; and the two cam plates are correspondingly arranged at a third side and a fourth side of the ball body, and each cam plate is fixedly connected with the ball body and extends towards the corresponding valve seat, so as to separate the corresponding valve seat from the ball body. According to the invention, the cam plates are additionally arranged between the valve seats and the ball body, when the valve rod is rotated to rotate the ball body, the two valve seats located at the first side and the second side of the ball body are ejected away by the cam plates fixed at the third side and the fourth side of the ball body, the valve seats do not contact with the ball body during the rotation of the ball body, and a friction force between the spherical surface of the ball body and the sealing surfaces of each valve seat is avoided, thus the harmful friction force between the ball body and each valve seat during the rotation of the ball body is fundamentally eliminated.

The invention discloses a mechanical seal device for a high-temperature and high-pressure forced hot water circulating pump. The mechanical seal device comprises a pump shaft and a heat exchanger. The pump shaft is provided with a pump shaft sleeve, the pump shaft sleeve is connected with a pump cover, the pump cover is connected with a primary seal base, and a secondary seal base is arranged at the tail end of the outer side of the primary seal base. A first seal cavity is formed between the primary seal base and the pump shaft sleeve, and a primary seal movable structure with a thread pump and a primary seal static structure with a thread pump are arranged in the first seal cavity. The primary seal base is provided with an internal circulation liquid inlet and an internal circulation liquid outlet, and the internal circulation liquid inlet and the internal circulation liquid outlet are communicated with the heat exchanger. A second seal cavity is formed between the secondary seal base and the pump shaft sleeve, and a secondary seal movable structure and a secondary seal static structure are arranged in the second seal cavity. The primary seal base is provided with a cooling water external circulation liquid inlet and a cooling water external circulation liquid outlet, and cooling water is provided by a power plant clear water pipeline. The technical problems that in the prior art, the using effect is unsatisfactory, the maintenance cost is high, the service life is short, and the price is high are solved.

The invention discloses a nuclear magnetic resonance instrument probe auxiliary device for carrying out steam saturation on porous media. The device comprises a probe tube internally filled with porous media samples, wherein a vacuum pump is connected above the probe tube; a water tank, a saturation device and a heating device are connected under the probe tube; the water tank and the saturation device are heated by the heating device and then convey steam into the probe tube; and the vacuum pump can be used for vacuuming the samples in the probe tube, so that air, liquid and impurities in pores of the samples are cleaned. Compared with a traditional nuclear magnetic resonance core detection device, through saturation of the steam, the problem of insufficiency in saturation of fine pores of the samples is solved. Due to the design of the saturation device, the heating device and the vacuum device connected with a probe, the temperature and a sealing state of the samples in an experiment process are ensured, and the detection precision and the accuracy of nuclear magnetic resonance on the core samples are promoted.

The invention provides a supercritical carbon dioxide explosion monitoring device which comprises a reaction kettle, a heating assembly, a mounting opening, a discharging assembly, monitoring devices, a filler opening and a control valve, wherein the reaction kettle is provided with a pressure bearing cabin and used for storing carbon dioxide; the heating assembly is used for heating carbon dioxide in the pressure bearing cabin; the mounting opening is formed in the reaction kettle and communicated with the pressure bearing cabin; the discharging assembly is provided with a certain pressure bearing value, mounted at the mounting opening in a sealed mode and conducts discharging when the pressure in the pressure bearing cabin reaches the preset value; the monitoring devices are used for monitoring the temperature and pressure of the pressure bearing cabin generated when the discharging assembly is exploded; the filler opening is formed in the reaction kettle, communicated with the pressure bearing cabin and used for injecting carbon dioxide in a sealed mode; the control valve is arranged at the filler opening in a sealed mode. Through cooperation between the control valve and the filler opening, the quantity of injected liquid carbon dioxide can be precisely controlled so that the relationship between the mass of carbon dioxide and the explosion critical temperature can be determined precisely and correspondingly when BLEVE explosion occurs.

The invention discloses a mass spectrometer sampling device, and relates to the field of testing instruments. The sampling device comprises a workbench, a base and a mounting base. A sampling pump isarranged on the mounting base. The input end and the output end of the sampling pump are connected with a liquid pumping pipe and a liquid supply pipe respectively. The workbench is rotatably connected with the base through a rotating shaft. The base is provided with a driving mechanism which drives the workbench to rotate. A number of placement grooves are equidistantly at the top of the workbench along the circumferential direction. Sample bottles are arranged in the placement grooves. Vertical sampling pipes are inserted into the sample bottles. When the sampling pipes are rotated below themounting base, the liquid pumping pipe is communicated with the sampling pipes through a conduction mechanism. According to the invention, the rotating workbench and the fixed mounting base are arranged; the conduction mechanism is used to conveniently complete the sampling of different agents; manual disassembly and assembly of a conveying pipeline are not needed; and the operation is simplified.

The invention provides a clinical anti-infection isolation device and an operation method. The device comprises an isolation room, an air duct, a filter box, a bottom plate, universal wheels, a sliding rail, an observation window and a bed body, wherein an air inlet is formed in the top of the isolation room; three air outlets are formed in the lower part of a side sealing plate on the left side of the isolation room; the outer sides of the air outlets are hermetically connected with the air duct; the air duct is provided with air ports; the air outlets correspond to the air ports; a fresh airport is formed in the air duct; the upper part of the air duct is hermetically connected with an elbow; the elbow is hermetically connected with a fan; the fan is hermetically connected with the filter box; the filter box is provided with four notches; the notch close to one side of the fan is hermetically connected with a primary filter; the notch below the primary filter is hermetically connected with a medium-efficiency filter; the notch below the medium-efficiency filter is hermetically connected with a high-efficiency filter; the notch below the high-efficiency filter is connected with alamp holder; and the lamp holder is fixedly connected with an ultraviolet lamp.

The invention relates to a dustproof computer keyboard key, which comprises a keycap cover which is provided with a contact block and a keycap base which is used for supporting the keycap cover and is provided with a through hole. The contact block can penetrate through the through hole, the side wall of the keycap cover is in close fit with the periphery of the keycap base when the keycap cover is not in a pressed state, the keycap cover can cover the keycap base when the keycap cover is in the pressed state, and a restoring piece for restoring the keycap cover and the contact block is arranged between the keycap cover and the keycap base. The dustproof computer keyboard key provided by the invention has the advantages that since the side wall of the keycap cover is in close fit with the periphery of the keycap base when the keycap cover is not in the pressed state and the keycap cover can cover the keycap base when the keycap cover is in the pressed state, the keycap cover and the keycap base are ensured to be in a sealed state, the dust is prevented from entering and the dustproof function is realized.

The invention discloses a closed conveyor, relates to a material conveyor, and aims to solve the problems of incapability of realizing closed conveying and incapability of changing the conveying direction in a traditional belt conveyor. Left and right mounting frames are arranged in parallel; left and right side edges of a conveying belt are upwards turned and tightly bonded to form a pipe shape or a cylinder shape; and after the conveying belt is matched and connected with a conveying mechanism on the right mounting frame in sequence, the conveying belt is bypassed through a steering wheel from right to left, then, is matched and connected with a conveying mechanism on the left mounting frame, is gradually unfolded to bypass through an unloading roller from top to bottom, and is overturned up and down to seal with the back end for butt joint to form a closed loop. The conveying belt is kept in a sealed state to realize closed material conveying; the conveying distance is changed through changing the lengths of the mounting frames and the conveying belt; and the direction of the conveying belt is changed through adding an auxiliary steering wheel and adjusting the extending directions of the mounting frames to realize turning conveying or high-height-fall conveying or even vertical conveying. The closed conveyor is used for material conveying.

The invention discloses an energy-saving high-efficiency coffee bean baking machine. The energy-saving high-efficiency coffee bean baking machine comprises a base, wherein a baking machine body, a cooling disk and a tail gas box are mounted at the top end of the base; the baking machine body is located between the cooling disk and the tail gas box; an inner cylinder and a gas filtering plate are mounted in the baking machine body; the gas filtering plate is located below the inner cylinder; a thermal mixing cavity and a combustion cavity are separately formed in two sides of the gas filteringplate; a combustor is mounted in the combustion cavity; and a fuel gas pipe is connected between the combustion cavity and the base. According to the energy-saving high-efficiency coffee bean baking machine disclosed by the invention, an exhaust pipe, the tail gas box, a gas return pipe, the thermal mixing cavity, a fan, the gas filtering plate and the combustion cavity are arranged, when the baking machine operates, and fuel gas enters the baking machine body, the fuel gas is combusted through ignition of the combustor, so that expansion combustion is realized in the combustion cavity, and the temperature is quickly raised; after combustion, generated high-temperature gas penetrates through the gas filtering plate to enter the thermal mixing cavity, and then the high-temperature gas is guided to the inner cylinder through the fan to heat and bake coffee beans.

The invention discloses a leak-proof ventilation structure. The leak-proof ventilation structure is characterized by comprising a pump chamber, wherein a ventilation hole is formed in the side wall of the upper end of the pump chamber, a rotary base is arranged in the pump chamber, the outer wall of the rotary base and the inner wall of the pump chamber are arranged in a sealed mode, the ventilation hole is formed in the portion, corresponding to the outer wall of the rotary base, of the pump chamber, a slot capable of being communicated with the ventilation hole is formed in the rotary base, an upper pump rod is arranged in the rotary base, the rotary base and the outer wall of the upper pump rod are arranged in a sealed mode, and the upper pump rod is connected with a bent nozzle mechanism which can drive the rotary base to rotate to enable the slot and the ventilation hole to be communicated or separated. The leak-proof ventilation structure aims to overcome the defects in the prior art and is simple, good in ventilation effect and capable of effectively preventing liquid leakage. The invention also aims at providing an emulsion pump with the leak-proof ventilation structure.

The invention provides a refrigerator. The refrigerator comprises a door used for opening and closing a refrigerator storage chamber, a distributor arranged on the door, and a distributor door. The distributor comprises an opening and a cavity. The distributor door is constructed to open and close the opening. The refrigerator is characterized in that the door is provided with a storage cavity capable of storing the distributor door. Accordingly, when the distributor door is opened, the distributor door can be directly stored in the storage cavity in the refrigerator door, and therefore when a user uses the distributor to obtain ice or cold water, the user cannot be hindered by the hidden distributor door. In addition, after the distributor door is opened, the distributor door is hidden in the refrigerator door, and the refrigerator door looks more attractive.

The invention relates to a coal anaerobic mining method which comprises the following steps: step 1, mine sealing: each of a main shaft and an auxiliary shaft of a mine is sealed to a sealed state, so that an atmospheric environment inside the mine is isolated from a ground atmosphere; step 2, coal anaerobic mining: oxygen concentration and gas concentration in the mine are monitored in real time, underground mining personnel wears a respirator to start with coal mining when the oxygen concentration inside the mine is reduced to be 5 percent or lower, and the gas concentration is kept above the upper limit of an explosion limit, and in the mining process, arranged oxygen concentration monitoring probes and an inert gas injection system are matched to monitor the oxygen concentration in real time, so that the oxygen concentration is controlled to be 5 percent or lower, and the coal mining is finished. The coal anaerobic mining method provided by the invention is suitable for various types of mines, can completely avoid the occurrence of underground gas explosion, coal dust explosion, underground fire and other major safety accidents and effectively guarantee personnel safety; the operation method is simple, and the initial investment cost and the mine production cost are greatly reduced; meanwhile, the greenhouse gas emission is reduced, so that the environment is protected.

The present invention relates to an LCD glass oven system. Particularly, the present invention provides an LCD glass oven system door, which is openably provided on each of oven chambers and cooling chambers of the oven system. The LCD glass oven system door includes a door frame (120a, 120b), two air packings (110), which are respectively provided in upper and lower ends of the door frame, air ports (130), through which air is supplied into or discharged from the respective air packings, and air supply or discharge hoses (140), which are coupled to the respective air ports to supply or discharge air into or from the respective air packings. Therefore, the present invention can provide an LCD glass substrate oven system door and an apparatus for controlling the door which can maintain a sealed state of the oven system and reduce the space required for installation of the doors, thus increasing the number of glass substrates that can be received in the oven system.

The invention discloses a warm/hot medium hydro-forming device for sheets. The device comprises a general double-acting hydraulic press rack, a heating system and a sheet hydro-forming unit, wherein the double-acting hydraulic press rack is used for installing and driving the sheet hydro-forming unit to work; the sheet forming unit provides heat for the sheet forming process through the heating system arranged in a furnace body, the sheet forming unit provides high pressure liquid for a charging chamber through a supercharger; and die assembly and forming processes in the sheet forming process are achieved through mutual matching of a female die and a male die. According to the device, corresponding cooling functions are achieved through designing of cooling water channels at appropriate positions in the sheet forming process; and simultaneously, isothermal and differential temperature hot hydro-forming processes can be achieved. The device has the advantages that problems of isothermal and differential temperature forming, sealing of equipment and long-time operation under high temperature and pressure can be solved farthest, and the forming limit of poor-plasticity sheet metal under the normal temperature can be improved.

The invention provides a sediment particle size wet screening machine and relates to a screening machine. The sediment particle size wet screening machine is provided with a water supply pipe, a transparent anti-sputtering cover, a grading cleaning sieve, a filter liquid collecting device, a filter liquid collecting bottle, a motive power vibration device, a base and a control circuit, wherein a water outlet of the water supply pipe is connected with an inlet arranged at the upper end of the transparent anti-sputtering cover, the lower end of the transparent anti-sputtering cover is connected with the upper end of the grading cleaning sieve in a sealed way, the grading cleaning sieve is provided with at least two stages of cleaning sieves with different hole diameters, all stages of cleaning sieves are connected in series, the upper end of the filter liquid collecting device is connected with the lower end of the grading cleaning sieve in a sealed way, an outlet of the filter liquid collector is connected with an inlet of the filter liquid collecting bottle, the motive power vibration device is provided with a fixed bottom support, a fixing rod, a fixing ring, a motor, a centrifugation block and a compression spring, the upper end of the fixing rod is connected with the fixing ring, the lower end of the fixing rod is connected with the fixed bottom support, the fixing ring is sheathed on the outer surface of the transparent anti-sputtering cover and is positioned above the grading cleaning sieve, the motor is fixedly arranged at the bottom of the fixed bottom support, an output rotating shaft of the motor is connected with one end of the centrifugation block, the upper end of the compression spring is connected with the fixed bottom support, and the lower end of the compression spring is connected with the base.

The invention discloses a livestock farm sewage treatment device and method. The livestock farm sewage treatment device comprises a tank body, bottom feet, a water inlet tube and an exhaust tube, wherein the bottom feet are arranged at the bottom surface of the tank body; a water outlet tube is arranged beside the bottom feet; a sealing cover is arranged on the bottom surface of the water outlet tube; a water inlet tube is arranged on the top surface of the tank body; a top cover is arranged on the top surface of the water inlet tube. The livestock farm sewage treatment device has the beneficial effects that a reverse osmosis membrane component is adopted for differential pressure osmosis filtration on sewage, then the sewage can be rapidly filtered, a scraper can be driven by a hydraulicpump to feed pollutants into a fermentation cavity to be reacted and fermented with biogas bacteria to generate biogas, and in addition, gas exhaust is automatically controlled through a feedback control loop consisting of a gas concentration sensor, a control host machine and an electromagnetic valve I, so that sewage filtration and fermentation treatment can be achieved, the treatment process issimple, the sewage treatment working efficiency is improved, meanwhile, a solar power generator is adopted to supply power to the device, the device is green and environmental-friendly, and the device can be popularized and applied in a large range.

The invention discloses a temperature and pressure reduction regulating valve which comprises a regulating valve body. A water inlet pipe is fixedly installed on the outer surface of one side of the regulating valve body, a connecting valve is fixedly installed on the outer surface of the side, close to the regulating valve body, of the water inlet pipe, and the water inlet pipe and the regulating valve body are fixedly installed through the connecting valve; and a valve hole is formed in the side, close to the connecting valve, of the outer surface of the water inlet pipe, a cleaning valve is movably installed in the valve hole, a movable rod is movably installed in the lower end of the cleaning valve, and a cleaning piece is fixedly installed on the outer surface of the movable rod. According to the device, dirt in a pipeline can be filtered, the situation that the dirt enters the regulating valve to damage the regulating valve is avoided, the service life of the device is prolonged, meanwhile, the filtered dirt can be cleaned and discharged, the device does not need to be disassembled, the cleaning mode is simple, rapid and efficient, and the using effect of the device is improved.