51results about How to "Affect airtightness" patented technology

The invention provides a process for producing a door curtain material, which comprises delivery of polyester fiber grey cloth, double-face coating treatment, pre-plasticizing and gelling, planishing and cooling, primary coating of a horizontal coating head, plasticizing treatment, cooling and shaping, secondary coating of the horizontal coating head, plasticizing treatment, embossing, cooling, winding, surface treatment and preparation. The process combines net sandwich cloth coating and surface treatment process, is complete relatively to common coating processing, can process a vertical coating, a surface layer and a bottom layer, reduces the intrusion of ultraviolet rays on the coating by adopting the surface treatment process on the one hand, can prevent plasticizing agent from being transferred to the surface of a product on the other hand so as to achieve the antifouling effect and achieve the aim of self-cleaning by means of rainwater; and the product has good air tightness and superior abrasion-resisting property, is suitable for outdoor application, and has long service life and remarkable economic benefit.

The invention discloses a corrosion test device for liquid lead or liquid lead-bismuth alloy and a method. The device comprises a box, a flange, a test section body, a fixing device, a sealing device,a closure head, a pressure cover, a supporting rod, a sampling operation window, a transition cabin and a gas purification system, wherein a glove box is arranged on the box; the flange is fixed to abaseplate of the glove box; the sampling operation window and the transition cabin are arranged on the glove box; and the gas purification system is connected to the internal space of the glove box and is used for removing oxygen and water in the glove box. The corrosion test device can remove oxygen and water, is simple in structure, reliable in sealing and suitable for the liquid lead or liquidlead-bismuth alloy, has a replaceable sealing structure, and can meet test requirements. The method is the using method of the device.

The invention discloses a manufacturing process of an embedded co-curing stitch damping thin film composite material. The manufacturing process comprises the following steps that preformed body is formed according to the stacking sequence of lower layer poor-glue prepreg, a small part of the vulcanized damping film or the poor-glue prepreg with the damping film and upper layer poor-glue prepreg; the preformed body is stitched by using fiber yarns according to design requirements, and a stitched preformed body is formed; then resin is introduced into the stitched preformed body and a resin stitched preformed body is formed; then sweep-frequency vibrating shock treatment is conducted on the system of the resin stitched preformed structure; and finally, the resin stitched preformed body subjected to the sweep-frequency vibrating shock is co cured according to co-curing process parameters, and then the embedded co-curing stitch damping thin film composite material is obtained. The greatest innovation of the manufacturing process is that the embedded co-curing stitch damping composite material is manufactured by a vacuum introduction method using low temperature vulcanization damping material components, the poor-glue prepreg and sweep-frequency vibration, and the whole mechanical properties of the structure are improved.

The invention discloses the fields of machine design and machine manufacture, and in particular relates to a pulse hot pressing welding machine for welding a connecting terminal and a connector. The welding machine is characterized by comprising a main machine for hot pressing welding, heating and radiating fins, a pulse hot pressing head, a power supply device arranged outside the main machine and used for protecting the voltage in the main machine, a display screen arranged at one side of the main machine, a pneumatic cylinder, a gas pressure meter, a temperature control instrument, a magnifier and a hand switch. The pulse hot pressing welding machine replaces the traditional manual operation, is high in quality of machined workpieces and simple and feasible in operation of workers, greatly promotes the production efficiency, and has low fault rate and stable performance.

The invention relates to the technical field of doors and windows, in particular to a retractable structure of a sliding door and window. The retractable structure of the sliding door and window includes a frame body and a sliding door and window; at least two upper retaining sliding blocks are arranged at the upper end of the sliding door and window, and at least two lower retaining sliding blocks are arranged at the bottom end; an upper sliding groove is formed in an upper beam of the frame body, and a lower sliding groove is formed in a bottom beam; all upper retaining sliding blocks extendinto the upper sliding groove, and all lower retaining sliding blocks extend into the lower sliding groove; at least two upper curve retaining sliding sections are arranged in the upper sliding groove; at least two lower curve retaining sliding sections are arranged in the lower sliding groove; and a supporting sliding mechanism slidably supported on the bottom beam is arranged at the bottom endof the sliding door and window; so that the position of the sliding door and window is limited, the sliding door and window is prevented from being pushed away from the frame body due to the recoveryeffect of elastic seals after the elastic seals are installed between the side edges of the sliding door and window and the frame body, and therefore the air tightness between the sliding door and window and the frame body is affected; and the improvement of the air tightness, water tightness, sound insulation and thermal insulation of the sliding door and window is facilitated.

The invention discloses a direct-acting sealing device, and a circuit breaker and a gas-insulated switch cabinet using the same, and belongs to the technical field of air cabinet sealing devices. Thedirect-acting sealing device comprises a sleeve which is radially moved along a mounting hole of a sealing plate and is axially positioned and assembled on the sealing plate along the mounting hole ofthe sealing plate; a pull rod through hole in sliding seal fit with an insulating pull rod is arranged in the sleeve; the sleeve is provided with a sleeve stop piece in stop fit with the sealing plate in an axial direction of the mounting hole; the sleeve stop piece and the sleeve are in stop fit in the axis direction of the mounting hole, so that the sleeve can be axially positioned and assembled on the sealing plate along the mounting hole of the sealing plate; and the sleeve is sleeved with a mounting hole sealing ring hermetically assembled between the sleeve and the hole wall of the mounting hole of the sealing plate. According to the device, the sealing performance of an axial reciprocating motion of the insulating pull rod can be ensured, and the sealing performance during axial and radial run-out can be realized; and therefore, the problems that an existing metal corrugated pipe sealing technology is poor in dynamic sealing performance and easy in damage are solved.

The invention provides a seal liner and an elastic net pipe. The elastic net pipe is formed by weaving metal wires, and the metal wires are machined into a plurality of omega-shaped omega bodies which are transversely connected in a neighbor mode in sequence; the metal wires in the elastic net pipe are spirally distributed, and circular-arc-shaped heads of the omega bodies located on the upper layer integrally penetrate through circular-arc-shaped heads of the corresponding omega bodies located on the lower layer. The length and the radial support force of the elastic net pipe can be adjusted randomly according to needs.

The invention relates to an automobile engine piston ring capable of reducing exhaust emission. The automobile engine piston ring comprises a ring body, a first joint and a second joint are arranged on the ring body, the first joint is provided with a first connection toothed bar and a second connection toothed bar which extend outwards, and the second joint is provided with a third connection toothed bar and a fourth connection toothed bar; mutually matched wedge-shaped structures are arranged on the lower side of the first connection toothed bar and the upper side of the third connection toothed bar, mutually matched wedge-shaped structures are arranged on the upper side of the second connection toothed bar and the lower side of the fourth connection toothed bar, and the ring body only can do contraction motion under the action of the wedge-shaped structures. A gap is formed between the third connection toothed bar and the fourth connection toothed bar, springs are arranged in the gap, and the third connection toothed bar and the fourth connection toothed bar are tightly attached to the side wall of a clamping groove of a piston. The air tightness in the radial direction of the piston and in the axial direction of the piston, of the joints of the piston ring can be ensured, the blow-by phenomena at the joints are completely eradicated, the engine ignition speed is increased, a fuel combusts more completely, the momentum output efficiency is higher, and the effects of energy conservation and environment protection are achieved.

The invention belongs to the technical field of wine brewing, and particularly relates to a liquid alcohol extracting and collecting system. The system comprises an extraction module, a collection module and a control module, wherein the collection module is arranged on the right side of the extraction module; the collection module is used for collecting alcohol; the extraction module comprises anassembly cylinder, a first cylinder, a second cylinder, a second sliding telescopic rod, a feed pipe and a rotating shaft; the first cylinder is arranged on the inner layer of the assembly cylinder,and is connected with a motor through the rotating shaft; the second cylinder is arranged on the bottom surface of the first cylinder through the second sliding telescopic rod; a spring sleeves on theouter layer of the second sliding telescopic rod; the second sliding telescopic rod is used for driving the second cylinder to rotate by matching with the first cylinder, and enables the second cylinder to vibrate relative to the vertical direction generated by the first cylinder by matching with the spring, and the generated vibration is used for loosening the distiller grains in the second cylinder. The liquid alcohol extracting and collecting system is mainly used for solving the problems in the prior art that the alcohol flavor is destroyed by high-temperature distillation, and alcohol collection is low in efficiency, and can be used for saving production cost.

The invention provides a sealing structure for a seal valve. The seal valve comprises a valve core, a valve body and a fixing device arranged between the valve core and the valve body. The sealing structure comprises a sealing ring arranged between the fixing device and the valve core in the vertical direction and clamped in an annular groove in a cavity of the fixing device; the sealing ring deflects towards the valve core and in seal joint with the valve core; the sealing ring is in interference fit with the annular groove, and an exhaust groove for exhausting air in the annular groove during mounting of the sealing ring is formed between an inner ring of the sealing ring and the annular groove.

The invention belongs to the technical field of silicon steel decarburization annealing, and particularly relates to an atmosphere isolation device for an industrial furnace, which comprises an isolation outer cylinder, an atmosphere isolation control cylinder is rotatably mounted in the isolation outer cylinder, the output end of a power motor is fixedly connected with the atmosphere isolation control cylinder, and a linkage exhaust device is fixedly arranged on the edge of the isolation outer cylinder. A gas combustion torch is fixedly mounted at the top of the isolation outer barrel, a combustion channel is fixedly connected to the output end of the gas combustion torch, the tail end of the combustion channel is rotationally connected with the atmosphere isolation control barrel, and an air supply pipe is fixedly connected to the side wall of the combustion channel; an air valve and an air pump are fixedly arranged on one side of the tail end of the air supply pipe. According to the device, the isolation mode of a traditional double-atmosphere isolation door can be changed, use of electrical equipment in the device is reduced, the occupied space is smaller, the number of electrical equipment is smaller, the air tightness is good, in addition, gas in the gap between the outer barrel and the inner barrel can be guided out, and the guiding-out work is flexible and controllable.

The invention discloses a multi-section aluminum foil pasting device for a shell of a gas generator. The device comprises a shell conveying rotary disc, a film taking and placing mechanism and a rolling film pasting mechanism; the film taking and placing mechanism comprises a film suction cylinder, a rotation driving device for driving the film suction cylinder to rotate, and a film suction cylinder driving device for driving the film suction cylinder to move back and forth between a film taking station and a film placing station; a multi-claw pneumatic chuck in the film suction cylinder at the film placing station drives a jacking block to extend out of an opening in the film suction cylinder so as to jack and press multiple sections of to-be-pasted aluminum foils on the outer circumferential wall of the film suction cylinder on the inner wall of the shell to be locally fixed; and the rolling film pasting mechanism comprises a roller for rolling and pasting all the aluminum foil on the inner wall of the shell and a roller driving device. According to the multi-section aluminum foil pasting device, aluminum foil is divided into multiple sections to be pasted, internal stress caused by pulling of the aluminum foil in the rolling process is effectively reduced, it is ensured that the aluminum foil is not wrinkled and degummed, and the air tightness is not affected, the aluminum foil is adsorbed to the film suction cylinder, locally pressed and pasted to the inner wall of the shell for pre-positioning and then rolled and pasted to the inner wall of the shell through the roller, the relative position precision after pasting is ensured, and the manufacturing process is stable and reliable.

The invention provides a pit furnace and a using method thereof. The pit furnace comprises a tank body and a tank body seal head, the tank body seal head is fixedly arranged at the bottom of the tankbody, a lining seal head is arranged in the tank body seal head, a limiting device is arranged between the lining seal head and the tank body seal head, and the lining seal head is placed in the tankbody seal head through a fixing frame; and the fixing frame is fixedly arranged in the tank body seal head, and hoisting structures are evenly arranged in the circumferential direction of the lining seal head. The lining seal head is additionally arranged on the tank body seal head to perform anti-corrosion protection on the tank body seal head, when the lining seal head is corroded, only the lining seal head needs to be hoisted out of the tank body and replaced with a new lining seal head, the whole tank body does not need to be hoisted out, no influence on the tank body is caused, the tank body is not damaged, the modification workload is small, cost is low, the service life of the whole tank body is prolonged, and the equipment cost is reduced. A water jacket is arranged between two tank flanges, so that a sealing ring is prevented from being heated and deformed to influence the air tightness of the pit furnace.

The invention discloses a multifunctional pipeline gas self-closing valve comprising a gas inlet bin. Internal threads are formed in the inner wall of one side of the gas inlet bin, one side of the gas inlet bin is fixedly connected with a pressure cavity, and the side, away from the gas inlet bin, of the pressure cavity is fixedly connected with a closing cavity. During use, a pressure measuring on-off mechanism in the pressure cavity detects the gas pressure of circulating fuel gas, the fuel gas is conducted when in overpressure, the fuel gas is shunted into a piston barrel through an L-shaped pipe, the strong pressure in the piston barrel is increased, a piston head moves towards an exhaust bin, and a first sealing plug is pushed to the exhaust bin through a piston rod; and a circulation path of the closing cavity and the exhaust bin is closed, the overpressure fuel gas is prevented from flowing to a user side, a safety accident is avoided, the pressure detection process and the fuel gas blocking process are both completed in a closed interval, overpressure fuel gas leakage is eradicated to the maximum extent without the participation of an electronic component in control, and the possibility that a fire disaster is caused by circuit faults does not exist.

The invention provides a heating device and method for preparing diffusion alloy powder for a detachable tube furnace. The device comprises a furnace tube, a flange, an air outlet, a stirring structure, an air inlet and a motor. The flange is used for fixing the furnace tube on a tube furnace body, and the stirring structure is connected with the motor and fixed on the flange, so that the stirringstructure is arranged on a central shaft of the furnace tube. The air inlet and the air outlet are used for feeding and discharging gas. Materials are put into the furnace tube, and the materials areuniformly heated by controlling the stirring rate and the stirring structure. The device can be used in various types of tube furnace hearths, is convenient to disassemble, avoids the waste of laboratory resources, and saves the experiment cost. Moreover, the stirring structure is used for mixing materials, so that the problems of poor air tightness and stability of the tubular furnace caused byrotating the furnace body are avoided. The composite powder prepared by the device can be used in the fields of 3D printing, cold spraying, powder metallurgy and the like.