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

The invention relates to a semi-plastic-package permanent-magnet synchronous motor including a stator assembly (1), a rotor assembly (2), a heat protector (3) and a lead-out wire inserting sheet (4). The stator assembly is composed of a stator iron core (5), a coil frame (6) and a stator coil winding (7). The stator coil winding (7) is coiled on the coil frame (6). The stator coil winding (7) is connected with the heat protector (3). The heat protector (3) is connected with the lead-out wire inserting sheet (4). Connection positions of the heat protector (3), the stator coil winding (7), the heat protector (3) and the lead-out wire inserting sheet (4) are completely plastic-packaged in resin material on the coil frame (6). At least one part of a rest part of the coil frame (6) has an exposed surface and is not plastic-packaged by the resin material. Therefore, the semi-plastic-package permanent-magnet synchronous motor can be prevented from oxidation and corrosion and can have a good heat dissipation effect.

The invention discloses a sealing element having function of overall sealing in a length direction and at two ends in a long tube-shaped light fitting, and a unit body light fitting comprising the sealing element. The sealing element comprises at least two sealing strips (101) positioned at a middle part and a left sealing end (102) and a right sealing end (103) positioned at the two ends, wherein the inner sides of the left sealing end (102) and the right sealing end (103) are provided with a cavity (104) respectively; two ends of the sealing strips (101) are fixedly connected with the innerend faces of the cavities (104); the inner end faces of the cavities (104) are provided with annular grooves (105); and the annular grooves (105) are matched with the shape of an end cross section ofa sealed tubular object. In the unit body light fitting of the invention, the sealing element is matched with a special structure of a section material and is matched with a left end cover and a right end cover to achieve the overall seal of the unit body light fitting and also facilitate the disassembly and the replacement of an internal circuit board and an LED light source, and the water resistance is good.

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 discloses a detection device based on a SAW sensor, which can realize the sealing of biological detection liquid and the sealing method is low in cost, simple and effective. The detection device includes a base plate, a base body, and a SAW chip. A detection circuit is arranged on the base plate; The wafer is arranged in the wafer groove and fixed on the base plate. The groove bottom of the wafer groove is provided with an annular groove, and a sealing ring is arranged in the annular groove. The sealing ring is in common with the induction film of the SAW and the groove bottom of the wafer groove. A closed detection space is formed, and a drainage hole is opened in the middle of the annular groove. The detection device prevents the biological detection liquid from leaking, and at the same time can ensure more accurate detection results, and the biological detection liquid can easily flow into the detection space due to the existence of the drainage hole. It is suitable for popularization and application in the technical field of detection equipment.

The invention provides an automatic feeding device for a powder mixing machine, which includes a frame with a conveying channel, and the frame is sequentially provided with a cover opening station, a turning station and a cover drop along the forward direction of the conveying channel. station, the two sides of the frame corresponding to the uncapping station, flipping station and cap dropping station are respectively provided with positioning and clamping devices, and one side of the frame is provided with a The pick-and-place lid device matched with the raw material bucket on the lid-dropping station, and the bucket-turning device is installed on the other side corresponding to the flipping station. The automatic feeding device can be fully automatic, has a reasonable overall structure, high working efficiency, and meets the requirements of the pharmaceutical production process.

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 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 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, theinflating 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 gasbottle through the thread gaps between the inflating plug and the bottle nozzle, and the inflation is simple, safe and reliable.

The invention belongs to the technical field of civil air defense engineering, in particular to a modular pipe hole sealing device for civil air defense engineering. Aiming at the problems of cumbersome and time-consuming and labor-intensive sealing methods for perforations in the prior art, the following scheme is proposed, which includes a fixed plate, and One side of the fixed plate is fixedly installed with a rubber column, and the fixed plate and the rubber column are respectively provided with a second jack and a first jack, and the second jack and the first jack are provided with the same pipeline, so One side of the fixed plate is provided with a civil defense wall, and a reserved hole is opened on the civil defense wall, and a galvanized sleeve is fixedly installed in the reserved hole, and the outer side of the rubber column is in contact with the inner wall of the galvanized sleeve. There are two rotating holes on the fixed plate, and the rotating rods are threaded in the two rotating holes. The sealing method of the present invention is simple, saves time and effort, and has a good sealing effect. Stability, simple structure, easy to use.

The present invention is applicable to the technical field of wind tunnel test, and provides a threading hole sealing device and a sealing method for a negative pressure device, including a mounting sleeve and a connecting piece; the mounting sleeve is a hollow circular platform structure, and includes symmetrically arranged first mounting sleeves The main body and the second installation sleeve main body, the first installation sleeve main body and the second installation sleeve main body are hinged; the inside of the installation sleeve is provided with a partition; The left partition and the right partition are composed; and the partition is provided with threading holes; the main bodies of the first installation sleeve and the second installation sleeve are provided with connecting parts. The sealing device of the present invention is a circular platform structure, the diameter of the small end is smaller than the diameter of the reserved threading hole, the small end of the installation sleeve is pushed into the reserved threading hole, and the sealing performance increases with the increase of the negative pressure in the negative pressure device during the test .