50results about How to "Simple sealing method" patented technology

The invention relates to a full-automatic wrapping vacuum packaging machine, comprising a conveying mechanism for substances to be packaged, an adhesive film distribution mechanism, a vacuum treatment mechanism and a finished-product output mechanism, wherein the conveying mechanism for the substances to be packaged comprises an emptying area A and an emptying area B; the adhesive film distribution mechanism is arranged between the emptying area A and the emptying area B, and comprises an upper packaging and distributing mechanism, a lower packaging and distributing mechanism and a sealing-cutting mechanism; the sealing-cutting mechanism comprises an upper sealing-cutting die and a lower sealing-cutting die which are driven by a power mechanism, and the upper sealing-cutting die is combined with the lower sealing-cutting die for cutting off and binding an upper adhesive film and a lower adhesive film which are used for coating the substances to be packaged; and the vacuum treatment mechanism comprises a conveying belt and a heating and binding mechanism. The vacuum packaging machine provided by the invention can perform vacuum package by utilizing at least three methods, thus the vacuum packaging machine can be used in diversified modes, and the scope of application is quite wide.

The invention discloses gas extraction equipment and method based on an alternation thought. The equipment comprises a sealing cavity, a loading mechanism, a gas supplying-controlling system, a gas alternating-controlling system, a gas flow dynamic monitoring system and a data acquiring computer, wherein a circular hole is formed in the center of a sealing cover at the upper end of the sealing cavity; a loading column passes through the circular hole to apply a load to coal-rock mass inside the cavity; the gas alternating-controlling system comprises a negative pressure extraction sub-system and a cracking displacement sub-system; the negative-pressure extraction sub-system comprises a gas extraction pump; the cracking displacement sub-system comprises a high-pressure water pump, an aeration tank and cracking displacement screen pipes; the high-pressure water pump, the aeration tank and the gas extraction pump are connected with the cracking displacement screen pipes of different lengths inside the coal-rock mass through pipelines; the gas supplying-controlling system and the gas flow monitoring system are connected with an aeration pipeline and an extraction pipeline respectively. By adopting the gas extraction equipment and method, hydraulic fracturing permeability improvement of coal mass and alternate gas extraction are realized, and the gas extraction efficiency is increased effectively.

The invention relates to a high-pressure gas bottle and an inflating method thereof. The high-pressure gas bottle comprises a bottle nozzle which is provided with a gas bottle opening, the gas bottle opening is a ladder outlet with a smaller inner part and a bigger outer part, an inflating plug is arranged at a wide mouth section of the ladder outlet in a revolving mode through screw threads, the inflating plug is provided with a gas outlet channel communicated with the gas bottle opening, a sealing membrane is arranged at the outer port of the gas outlet channel in a sealing mode, and the ladder end face of the opening forms a sealing fit with the inner side end face of the inflating plug. The inflating plug is firstly unscrewed for 1 to 3 circles when inflating, gas is inflated to the gas bottle through thread gaps between the inflating plug and the bottle nozzle, the inflating plug is screwed for sealing when the inflation is over, and then sealing weld is set on the end face of the bottle nozzle so as to realize sealing between the inflating plug and the gas bottle opening. The inflating plug is arranged in the gas bottle opening in a revolving mode, gas is inflated to the gas bottle through the thread gaps between the inflating plug and the bottle nozzle, and the inflation is simple, safe and reliable.

The invention relates to a method for sealing a liquid reservoir for a liquid flow battery, which comprises the following steps of: installing a seal cover on the liquid reservoir, filling the liquid reservoir with electrolyte, and sealing the liquid reservoir; indirectly sealing the sealed liquid reservoir with liquid or gas. The pressure in the liquid reservoir indirectly sealed by the liquid or gas always stays at one standard atmospheric pressure. The liquid or gas used for indirect sealing is sealing liquid or sealing gas. The sealing liquid or sealing gas and the liquid reservoir are connected through a conduit. One end of the conduit is outside the liquid reservoir. The invention has the advantages that the sealing method is simple, convenient and efficient; the problem of inconsistent charging states of battery anode and cathode caused by oxidation of low-valence ions and the problems of ion permeation, water permeation, membrane aging and the like caused by the problem of pressure unbalance are solved; the service life of the membrane can be effectively prolonged; and the coulomb efficiency of the liquid flow battery is improved and the service life of the liquid flow battery can be effectively prolonged.

The invention provides an automatic feeding device for a powder mixing machine. The automatic feeding device comprises a rack provided with a conveying channel. A cap opening station, a turnover station and a cap falling station are arranged on the rack in the advancing direction of the conveying channel sequentially. Positioning and clamping devices are arranged on the two sides, corresponding to the cap opening station, the turnover station and the cap falling station, of the rack. A cap taking and placing device matched with a raw material barrel on the cap opening station and the cap falling station is arranged on one side of the rack; a barrel turning device is arranged on the other side, corresponding to the turnover station, of the rack. The automatic feeding device for the powder mixing machine is capable of achieving full automation, reasonable in whole structure and high in working efficiency; the requirement of the pharmaceutical production process can be met.

The invention discloses a composite pipeline hot tapping plugging method which comprises the following steps: firstly carrying out hot tapping on a steel lining composite pipe by adopting tapping equipment, wherein a cut-off saddle-shaped piece is taken out by a center drill; measuring the external diameter of the saddle-shaped piece and the diameter of an open pore in the steel lining composite pipe, and making a sealing ring according to the size different for later use; chamfering the acute angle of a cutting surface of the saddle-shaped piece into an obtuse angle, smearing adhesive to the surface of the saddle-shaped piece, and arranging the sealing ring on the cutting surface to form a plug used for the open pore; after other construction operations are completed, sending the plug to the home position of the open pore in the composite pipe by adopting a mechanical method, and fixing with a three-way snap ring, thus completing plugging of the open pore of the composite pipe. The method has the advantages that the sealing method is simple, the sealing effect is good, plugging sealing of the open pore is performed by adopting a method of using the saddle-shaped piece cut off by tapping and the sealing ring, and the material cost is low, thus well solving the difficulty of sealing of an adhered part of a steel pipe and an inner lining pipe at the pipe wall of the open pore after plugging construction of the steel lining composite pipe is completed.

The invention discloses a double-mandrel direct-connection precise rotating shaft. The double-mandrel direct-connection precise rotating shaft comprises a main mandrel and a mandrel, wherein the mandrel penetrates and is fixedly connected with a wave generator of a harmonic reducer, the large end of the main mandrel is fixedly connected with a flexible gear of the harmonic reducer, a rigid gear of the harmonic reducer is fixedly connected with a B shaft outer cover, a first contact ball bearing and a second contact ball bearing are fixed on the inner side of the B shaft outer cover, which is close to the harmonic reducer, a third contact ball bearing and a fourth contact ball bearing are fixed on the inner side of the B shaft outer cover, which is far away from the harmonic reducer, inner rings and outer rings of the first, second, third and fourth contact ball bearings are connected with inner and outer ring sleeves respectively, and a first flange and a second flange are disposed at two ends of the B shaft outer cover. According to the double-mandrel direct-connection precise rotating shaft, two mandrels are arranged inside, and the small mandrel drives the large mandrel through the harmonic reducer.

The invention relates to a method for applying oxidized PE wax to sealing protection of a circuit board. The method comprises the steps that the surface of the circuit board is coated with a layer ofcoupling agent, and air drying is conducted; the circuit board is dehumidified; a tackifier and a liquid toughening agent are added into the molten oxidized polyethylene wax to be uniformly mixed to prepare molten wax; the dehumidified circuit board is immersed in the molten wax for sealing, and after sealing is completed, the circuit board is placed on release paper and dried. By means of the sealing method, the defects that the oxidized PE wax easily cracks at the low temperature and has poor adhesion force are overcome; the tackifier and the toughening agent is added according to a ratio through repeated experiments, and finally, the oxidized PE wax can meet the requirement of the circuit board for effective waterproof and moisture-proof sealing in the working environment at minus 20-60DEG C. By means of the method, the good acid and alkali resistance, electrolytic-resistance chemical stability and hydrophobicity of the main ingredient PE wax are fully utilized, and a layer of waxfilm is formed on the surface of the circuit board and a component to protect the circuit board after melting.

The invention discloses a sealing and cooling structure of an ultra-speed table. The sealing and cooling structure is characterized in that a cover is fixedly connected onto a protective cover, the protective cover is fixedly connected with an upper port of a motor casing, a lower port of the motor casing is fixedly connected with an upper port of an upper wiring cover, a lower port of the upper wiring cover is fixedly connected with an upper port of a lower wiring cover, one end of a pipeline is hermetically connected with a lower port of the lower wiring cover, the other end of the pipelineis hermetically connected with an air outlet of an air blower, and a valve is connected onto the pipeline; spaces between the protective cover and the cover, between the protective cover and the motorcasing, between the motor casing and the upper wiring cover and between the upper wiring cover and the lower wiring cover are sealed by sealing rings. The sealing and cooling structure has the advantages that main units are integrally sealed instead of being originally locally sealed by sawtooth shaft peaks at the upper ends of rotors, accordingly, sealing modes are simple, and good sealing effects can be realized; the sealing and cooling structure can be in intermittent working and intermittent cooling schemes, and accordingly good cooling effects can be realized.

The invention discloses a gas testing device and testing method based on inflated constant pressure in a cavity. Equipment comprises a sealing main body frame, an intra-cavity constant pressure inflating device, a gas supply and control system, a gas traffic dynamic monitoring system and a data collecting computer; the main body frame is mainly composed of a cylindrical cavity, an air inlet, an air outlet, a sealing cover, and an O-shaped sealing rubber ring; the sealing cover and the sealing cavity are in threaded connection; the gas supply and control system is located at the left side of the sealing main body frame; the gas traffic dynamic monitoring system and the data collecting computer are located at the right side of the sealing main body frame; a rigid jack part and the sealing cover are in threaded connection so as to control the pressure size through the amount of the injected hydraulic oil; the sealing main body frame, the gas supply and control system and the gas traffic dynamic monitoring system are connected through a gas pipeline. Through the testing device and method disclosed by the invention, the good and emulational test research equipment is provided for adjusting the pressure size above the media in the analog simulation process according to the actual overlying rock situation.

The invention relates to a sealing structure and method applied to a high-pressure container. The structure comprises the high-pressure container, an unloading opening is formed in the high-pressure container, a step is arranged at one end of the high-pressure container and used for containing an anti-explosion piece for detecting the sealing effect, mineral powder with certain gradation is arranged on the anti-explosion piece, and a gap is formed between the anti-explosion piece and the inner wall of the high-pressure container; water is injected into the high-pressure container through a water injection mechanism, the mineral powder with certain gradation flows towards the threaded gap between the anti-explosion piece and the inner wall of the high-pressure container under the pushing effect of water, the threaded gap is filled in order, and sealing is achieved. The sealing method of the technical scheme is more efficient than a traditional sealing mode or based on a high-pressure container structure type or by utilizing a special sealing material. According to the sealing structure and method, mineral powder is used for plugging, the method is a reliable supplement of a conventional sealing mode, and the mineral powder is a product generated through rapid unloading of the high-pressure container but not specially customized. Therefore, the sealing method is simple, efficientand reliable.

The invention is applicable to the technical field of wind tunnel tests, and provides a threading hole sealing device and sealing method for a negative pressure device. The threading hole sealing device comprises a mounting sleeve and a connecting piece, wherein the mounting sleeve is of a hollow circular truncated cone structure and comprises a first mounting sleeve main body and a second mounting sleeve main body which are symmetrically arranged, and the first mounting sleeve main body is hinged with the second mounting sleeve main body; the mounting sleeve is internally provided with a partition plate; the partition plate is composed of a left partition plate and a right partition plate which are respectively arranged at the inner side surfaces of the first mounting sleeve main body and the second mounting sleeve main body; the partition plate is provided with a threading hole; and the main bodies of the first mounting sleeve and the second mounting sleeve are provided with connecting parts. The sealing device provided by the invention is of a circular truncated cone structure, the diameter of the small end is less than the diameter of a reserved threading hole, the small end of the mounting sleeve is pushed into the reserved threading hole, and the sealing performance is increased along with the increase of negative pressure in the negative pressure device in the test process.

The invention discloses an efficient heat exchange assembly for refrigeration equipment. The efficient heat exchange assembly comprises a shell and a guiding pipe assembly, wherein the guiding pipe assembly is arranged in the shell; gaps between the shell and the guiding pipe assembly are filled with high-thermal conductivity solid fillers of which the porosity is 40 to 60 percent; the guiding pipe assembly is formed by connecting at least two pure-copper branch guiding pipes in parallel; the at least two pure-copper branch guiding pipes are merged and communicated with each other at the positions of a refrigeration fluid influx opening and a refrigeration fluid outflux opening through a welding way; welding joints are sealed by adopting ZP special sealing grease. According to the efficient heat exchange assembly disclosed by the invention, the heat exchange area under the same mass is enlarged, the heat exchange area is increased by using a simple way, the economical efficiency is good, and the heat exchange efficiency is high; sealing is carried out by adopting the ZP special sealing grease, so that the adaptability is good, the sealing way is simple, the sealing performance is good, and the problem that leakage can be easily caused due to manual packaging is solved; the structure is simple, a malfunction can be easily eliminated, and maintenance and accessory replacing operation can be easily carried out.