9results about How to "Solve the plugging" patented technology

The invention provides a self-adhesive polyether-ether-ketone-polyphenylene sulfone composite fiber and a preparation method thereof. The self-adhesive polyether-ether-ketone-polyphenylene sulfone composite fiber is of a skin-core structure, a core layer of the skin-core structure is polyether-ether-ketone, and a skin layer of the skin-core structure is polyphenylene sulfone. The self-adhesive polyether-ether-ketone-polyphenylene sulfone composite fiber disclosed by the invention is a composite fiber with a skin-core structure, and the self-adhesive polyether-ether-ketone-polyphenylene sulfone composite fiber has a self-adhesive property and an excellent mechanical property. The self-adhesive polyether-ether-ketone-polyphenylene sulfone composite fiber can be used for preparing an acoustic membrane, and due to the self-adhesiveness of the self-adhesive polyether-ether-ketone-polyphenylene sulfone composite fiber, when the self-adhesive polyether-ether-ketone-polyphenylene sulfone composite fiber is compounded with an aramid honeycomb, the acoustic membrane can be directly adhered to the aramid honeycomb to form a composite material, the interface adhesion effect is improved, and the interface bonding force is improved; the use of an adhesive is avoided, and the problem of hole blockage of the acoustic membrane caused by the adhesive is avoided.

The utility model belongs to the technical field of bamboo and wood fiber production, and particularly relates to a wear-resistant lining plate for a double-screw filament dividing machine based on bamboo and wood fiber production, which comprises a wear-resistant lining plate body, a first mounting slotted hole is formed in the inner side surface of the wear-resistant lining plate body, and a second mounting slotted hole is formed below the first mounting slotted hole. A second mounting slotted hole is formed in the outer side surface of the wear-resistant lining plate body, a sewage discharge plate is mounted in the first mounting slotted hole, a conical hole is formed in the surface of the sewage discharge plate, a supporting plate is mounted in the second mounting slotted hole, and a through hole is formed in the surface of the supporting plate. According to the utility model, by improving the existing wear-resistant lining plate and the sewage discharge hole, the sewage discharge stroke is slowed down, the problem of hole blockage is perfectly solved, and the practicability is strong.

The utility model discloses a flow control device of an electric arc furnace conductive arm accessory electrode spray ring, which comprises a flow control valve and a filtering mechanism, and the filtering mechanism comprises a flange ring A, a row pipe, a vertical cylinder, a connecting pipe, a flange ring B, a D-shaped paired plate, a main paired plate, a paired plate, an inclined sheet, a vertical support rod, a vertical plate rotary column and a top cover, a filtering mechanism is arranged at a flow control valve for controlling flow of the electric arc furnace conductive arm accessory electrode spraying ring, and the flow control valve can be connected with a water supply pipeline flange of the electric arc furnace conductive arm accessory electrode spraying ring through the filtering mechanism to supply water. The filtering mechanism can filter water with pressure and then flow into the electric arc furnace conductive arm accessory electrode spraying ring for water supply spraying after flow control of the flow control valve, and the problem that more water with impurities enters the electric arc furnace conductive arm accessory electrode spraying ring to generate incrustation scale and block holes is avoided.

The utility model provides a welding wire feeding device, and aims to solve the technical problem that the output end of a wire feeder is easy to block wires. The device comprises a laser welding machine, wherein one end, emitting laser, of the laser welding machine is vertically downward; one end of the connecting frame is connected with the top of the laser welding machine, and the other end of the connecting frame extends in the horizontal direction; the wire feeder is obliquely arranged on the connecting frame; one end of the guide pipe is arranged on an output port of the wire feeder, the other end of the guide pipe is located below the laser welding machine, the length direction of the guide pipe is consistent with the inclination direction of the wire feeder, and the end, away from the wire feeder, of the guide pipe is provided with a conical nozzle; the extension line of the guide pipe in the length direction and the laser light emitted by the laser welding machine intersect at the same point. According to the technical scheme, in the welding process, high temperature is applied to the end of the guide pipe, the copper guide pipe has the characteristic of high temperature resistance, and therefore the problem of wire blocking can be solved.

The present invention provides a control method for lead-free tin spraying of a circuit board, which specifically comprises: MI, drilling, copper deposition, circuit, electrical diagram, AOI, solder resist and tin spraying; in the MI stage, if the circuit board has an outer copper skin, it is necessary to set the outer copper skin spacing of the circuit board to be greater than or equal to 0.25mm; in the tin spraying stage, it is necessary to control the copper content in the tin furnace to be below 0.6%; when the copper content is greater than 0.6%, the tin furnace is subjected to copper removal treatment; the tin immersion time is 7 to 10 seconds; and the problems of solder resist blistering and delamination are solved.

The invention relates to a high-permeability carbon nitride diaphragm as well as a preparation method and application thereof. Preparing carbon nitride slurry, adding a dispersing agent, and stirring and dispersing; coating the surface of the diaphragm with the prepared carbon nitride slurry by using a bar coating machine, and then drying to obtain a carbon nitride diaphragm; carrying out two-way stretching treatment on the prepared carbon nitride diaphragm; and carrying out two-way stretching on the carbon nitride diaphragm by using a two-way stretching machine to obtain the high-permeability carbon nitride diaphragm. Compared with the prior art, the invention provides a method for biaxially stretching the base membrane, so that the carbon nitride on the surface is cracked, the pores of the base membrane are further enlarged, the problem of pore blockage of the carbon nitride diaphragm is solved, and a foundation is laid for industrialization of the carbon nitride diaphragm.

The utility model discloses an automobile safety air bag impact test tool, comprising a rigid substrate which is fixedly installed on a test bench backboard and is provided with a metal net installation window at the position of an exhaust hole of a safety air bag; the metal net is arranged in the metal net mounting window; the airbag fixing bracket is arranged on the rigid base plate and is used for fixing a safety airbag on the rigid base plate; and the hammer head is positioned above the rigid base plate and is used for impacting the safety air bag in an impact test. The safety air bag impact test device solves the problem of hole blocking in the impact test of the safety air bag, is convenient to process, low in cost, easy to detach and replace, and suitable for the impact test of various safety air bags with exhaust holes.

This invention discloses an anti-clogging drill rod with a synergistic effect of mechanical scraping and pulsed airflow, and its drilling method, belonging to the technical field of coal mine gas drainage drilling equipment. The anti-clogging drill rod mainly consists of a drill rod body and a coaxially fitted outer casing. The drill rod body contains a directional pulsed airflow duct and nozzle, while the outer casing is equipped with elastic scraping teeth, a pulverized coal inlet, and a crushed coal and stone inlet. The drilling method includes the following steps: equipment system preparation and connection, directional drilling, gas-water mixing and slag removal, equipment system debugging and preheating, torque sensor calibration, synergistic drilling, intelligent control, synergistic finishing, and acceptance evaluation. This invention solves the core problem of pulverized coal agglomeration and drilling interruption in pulverized coal seam drilling through the synergistic effect of the drill rod's self-cleaning structure and directional pulsed airflow. It is compatible with existing mainstream drilling rigs and provides technical support for efficient gas drainage from deep pulverized coal seams.

The invention discloses a compound and an organic electroluminescent device containing a carbazole structure, and relates to the field of organic electroluminescent technology. The compound in the present invention is appropriately substituted on the carbazole group so that the compound molecular weight is between 560-650, and the compound of the molecular weight in this interval has a suitable evaporation temperature and sublimation temperature, which ensures the evaporation mass production and evaporation stability of the product. At the same time, the molecular weight in this interval can be well mixed with N-type (electron transmission type host material) on the market to form a dual host material for use, thereby improving the stability and mass production of the device. The compound in the present invention has a suitable melting point due to having a relatively large torque and steric hindrance, and at the same time, a relatively large torque can improve the solubility of such materials, thereby reducing the mass production cost of such materials and improving product quality. After device verification, the device prepared using the compound of the present invention has good luminous efficiency and lifespan.