31results about How to "Won't leak easily" patented technology

The embodiment of the invention discloses a device for preventing dust in a swepper dust collection box from falling off. The device comprises a storage box chamber arranged in a sweeper body, and a dust collection box is connected in the box storage chamber; an air rolling cylinder which is connected with the sweeper body and is used for rolling dust into the storage box chamber is arranged on the right side of the storage box chamber; an air suction opening is formed in the position, corresponding to the air rolling cylinder, of the side wall of the box storage chamber; a dust blocking structure is mounted in the air suction opening; the device can seal and block the air suction opening through an overhead door arranged at the position of the air suction opening to prevent dust at the dust collection box from falling off for the second time; during specific implementation, torsional springs on the two sides of the overhead door can push the overhead door all the time, so that it is guaranteed that the overhead door has enough force to enable a dust suction opening to be closed tightly, and even if the sweeper vibrates greatly, dust in the sweeper cannot leak out of the dust suction opening easily due to blocking of the overhead door.

The present invention uses a step-by-step synthesis strategy to prepare a series of aromatic azo compound building blocks (named after Azo-R, R=NHBoc, NH 2 , p‑phenyl‑NHBoc, CHO, B(OH) 2 , CN, CH 2 CN, etc.), and then used them as precursors to synthesize a series of stable, highly crystalline and high specific surface novel covalent organic frameworks (COFs) materials. Through characterization, it is found that these COFs have high specific surface area and excellent chemical stability, and can be used in various common organic solvents (acetone, dichloromethane, DMF, etc.), concentrated hydrochloric acid (12M), concentrated alkali NaOH (12M), Stable in boiling water. In addition, they show good hydrophilicity and high water vapor adsorption capacity, which make this type of COFs an ideal proton-conducting material. After loading phosphoric acid, these COFs achieved ultra-high proton conductivity with a conductivity of 1.13×10 ‑ 1 S / cm, this value can be compared with the value of commercial Nafion (~1.1×10 ‑1 S / cm) comparable. These COFs can be easily fabricated into proton exchange membrane devices and applied to hydrogen-oxygen fuel cells.

The invention relates to the technical field of prefabricated concrete lining segments, in particular to a segment flexible production line. The invention includes a production pouring line, a steam curing area, a static stop area, a mold walking device and a steel cage processing area. Both sides of the steam curing area are respectively provided with a static stop area and a production pouring line from near to far. The mold walking device includes The track and the transport trolley, the track is connected to the production pouring line, the steam curing area and the static parking area, the transport trolley is set on the track, and the steam curing area and the static parking area on both sides are integrally equipped with a steel cage processing area. The present invention has complete supporting facilities and a smaller occupied area, which leads to a higher concentration of production lines, thereby improving the production process and increasing production efficiency.

The invention discloses an outdoor liquid storage tank. The outdoor liquid storage tank is characterized in that a nitrogen pipeline 2 is arranged on the side surface of the upper portion of a tank body in a communicating mode, a nitrogen sealing valve is arranged on the nitrogen pipeline 2 and is connected to an outlet of a nitrogen tank through a pressure reducing valve, the top of the tank bodyis provided with a ventilation elbow, a one-way exhalation valve is arranged at the ventilation elbow, an oil inlet is connected with an oil pipe penetrating through a nitrogen sealing layer, the lower end of a manual oil pouring opening is connected to an oil liquid isolation area, the oil liquid isolation area penetrates through the nitrogen sealing layer to communicate to the bottom of the tank body, a liquid pressure release valve is arranged on the side wall of the bottom of the oil liquid isolation area 6, the upper portion of the oil liquid isolation area is provided with a one-way airvalve communicating with the nitrogen sealing layer, the manual oil pouring opening is covered by a sealing cover with the one-way air valve, an oil outlet is formed in the side face of the lower portion of the tank body, and a stop valve is arranged at the end portion of the oil outlet. According to the outdoor liquid storage tank, leakage can be prevented, a liquid can be cooled, normal air pressure in the tank body can be maintained, and the safety of the outdoor liquid storage tank is greatly improved.

The invention discloses a 3D printing-based automotive LED lamp and its liquid cooling system, which are used for automotive LED lamps and relate to the field of automotive LED lighting. The purpose is to provide a 3D printing-based automotive LED lamp and its liquid cooling system. liquid cooling system. The radiator includes a shell, which is provided with a liquid injection port and a liquid outlet, and an intermediate jet plate is arranged in the shell, and the intermediate jet plate divides the inner cavity of the shell into a micro-spray high-pressure liquid inlet area and a heat exchange area. The area includes the micro-spray cooling cavity and the porous medium heat dissipation channel. The micro-spray high-pressure liquid inlet area and the porous medium heat dissipation channel are all connected to the liquid injection port. The cavity is connected, and the micro-spray cooling cavity, the porous medium heat dissipation channel, and the liquid outlet are connected in sequence. The radiator significantly improves the heat dissipation efficiency of the LED lamp for the vehicle, and improves the service life of the headlight of the vehicle body.

The invention provides a fishing bag which can also be used as a fish preserve and has an excellent waterproof property. This fishing bag 10 comprises a bag body 11 and an outer lid 12. An inner lid 13 is disposed in the bag body 11. When the outer lid is closed, the opening 17 of the bag body 11 and its peripheral portion are surrounded with the outer lid 12. The upper end portion 16 of a side wall portion 15 is wound and hung on a core material 19 and bent on the outside to form the bag body 11. The upper end portion 16 is welded to a prescribed position 18 of the side wall portion 15. The outer lid 12 is attached to the outermost edge portion 29 of the upper end portion 16. The inner lid 13 is sewed on the upper end portion 16 of the side wall portion 15 through a slide fastener 35. The slide fastener 35 is sewed on the side wall portion 15 above the prescribed position 18.

The invention discloses a gene detection verification extraction system applicable in teaching and a gene screening method for rare diseases, including a puncture and drainage mechanism, a blood collection mechanism and a supernatant fluid collection mechanism, and the puncture and drainage mechanism includes a first puncture needle and the second puncture needle, the first puncture needle and the second puncture needle are connected through a first connecting hose, and a flow blocking mechanism is sleeved on the first connecting hose, and the flow blocking mechanism It includes an upper cover and a lower cover, one end of the upper cover and the lower cover is connected by a movable shaft, and a first limiting groove is provided on one side of the upper cover, and the cross section of the first limiting groove is a curved arc , the lower cover is fixed with a limit column, the limit column is adapted to the first limit groove, and the limit post is in contact with the upper cover through a limit nut. The beneficial effects of the present invention are: the distance between the E-shaped baffle plate and the vertical baffle plate can be accurately controlled, so that the speed of liquid discharge can be accurately controlled, and the comfort of relevant personnel can be ensured.

The invention discloses an oil seal structure and an oil seal method for a cooling transformer, comprising an upper cover plate, the upper cover plate is arranged in the inner cavity of an oil tank of a transformer, and the long side of the upper cover plate is connected with a long axis side oil seal One end of the cardboard, the other end of the oil seal cardboard on the long axis side is in contact with the bottom inner wall of the fuel tank, one end of the oil seal cardboard on the short axis side is connected to the broad side of the upper cover plate, and the other end of the oil seal cardboard on the short axis side One end is in contact with the bottom inner wall of the oil tank, the oil seal cardboard on the long axis side, the oil seal cardboard on the short axis side, the upper cover plate and the inner wall at the bottom of the oil tank of the transformer enclose the cavity of the synthetic oil seal structure, the other end of the oil seal cardboard on the long axis side and The other end of the oil seal cardboard on the side of the short axis is bent toward the cavity inner cavity of the oil seal structure, and the upper cover plate and the inner wall of the bottom of the oil tank are connected by a support member. The invention has low manufacturing cost, and the cavity of the oil seal structure has scalability, which ensures a stable flow rate of oil entering the coil.