9results about How to "Solving Diffusion Problems" patented technology

The invention provides a blast hole cleaning device for tunnel shallow hole blasting, which relates to the technical field of tunnel shallow hole blasting and comprises a first telescopic piece, a central column and a hole cleaning pipe sleeve, a spiral rib is arranged on the inner wall of the hole cleaning pipe sleeve, a slag inlet is formed in one side of the hole cleaning pipe sleeve, a broken notch is formed in the position, corresponding to the slag inlet, of the spiral rib, an opening and closing plate is rotationally installed at the slag inlet, a connecting rib set is arranged on the inner side of the opening and closing plate, and the opening and closing plate can be switched to a closing station for blocking the slag inlet or a slag inlet station rotationally collected into the hole cleaning pipe sleeve. A scraping plate is mounted beside the slag inlet; the center column is fixed to the telescopic end of the first telescopic piece, the hole cleaning pipe sleeve is coaxially and rotationally installed outside the center column, and an arc plate is fixedly arranged on the lower half side of the center column. According to the device, rock slag cleaning is achieved through spiral conveying in the closed pipe, the problems of broken stone splashing and dust diffusion are fundamentally eradicated, continuous operation of slag scraping, slag feeding and slag conveying is achieved through automatic station switching of the opening and closing plate, and the rock slag in the hole cleaning pipe sleeve is effectively prevented from falling out.

This invention provides a metal interconnect structure and its fabrication method. The fabrication method includes: forming a first dielectric layer with vias on a bottom metal layer; forming a first metal barrier layer on the first dielectric layer, the first metal barrier layer covering the top surface of the first dielectric layer and covering the sidewalls and bottom surface of the via; forming a first protective layer on the sidewalls of the via, the first protective layer covering the first metal barrier layer on the sidewalls of the via and covering the first metal barrier layer on the edge region of the bottom surface of the via; and under the cover of the first protective layer, etching away the first metal barrier layer on the top surface of the first dielectric layer and removing the area of ​​the first metal barrier layer on the bottom surface of the via not covered by the first protective layer. This avoids metal diffusion problems caused by via etching misalignment and protects the metal barrier layer on the sidewalls of the via. In the metal interconnect structure, the metal barrier layer covers the sidewalls of the via and extends to cover the edge region of the bottom surface of the via.

The invention discloses a dust collecting device used during discharging of steel wires after cracking of waste tires, the dust collecting device comprises a base, a dust collecting machine box, a dust collecting pipe, a dust collecting cover, a rack, a control device and a power source, the dust collecting machine box is installed on the base, the rack is welded to the front side of the base, and the front side of the dust collecting machine box is connected with the dust collecting cover through the dust collecting pipe; the two dust collection covers are installed in the middle and at the top of the rack respectively, a control device and a power source are installed on the portion, on the rear side of the dust collection machine box, of the base, and a dust suction power source installation bin, an ultrasonic vibration power source installation bin, a filtering bin and a dust collection bin are arranged in the dust collection machine box from top to bottom. And an air inlet of the filtering bin is connected with the dust collecting pipe. The device has the functions that diffused carbon black dust can be effectively captured and recycled in the steel wire discharging process, the workshop operation environment is remarkably improved, dust pollution is reduced, and meanwhile recycling of carbon black resources is achieved.

The application relates to the technical field of hydrogen concentration optical visual detection, in particular to a hydrogen concentration detection device which comprises a detection table, an optical testing device body arranged on the detection table, a detection pipeline body in communication with one end of the optical testing device body, visual detection of a to-be-detected gas by the optical testing device body after the to-be-detected gas enters the detection pipeline body, a joint, a mixing assembly, a buffer assembly, a speed reduction assembly and a reflection assembly arranged in the detection pipeline body in sequence along a gas entering direction; the mixing assembly, the buffer assembly, the speed reduction assembly and the reflection assembly are arranged in the detection pipeline body in sequence, and the optical testing device body is combined with the optical regulation and control means of a beam splitter and a concave lens, the problem of uneven hydrogen distribution is solved through the mixing assembly, the gas flow rate is reduced and the contact time is prolonged through the buffer and speed reduction assembly, and finally the optical path is significantly prolonged through the optical assembly, and the detection signal is enhanced.

The invention discloses a semiconductor structure and a corresponding chip and product. The structure comprises a silicon-based integrated circuit and a bump structure arranged on the silicon-based integrated circuit. The bump structure sequentially comprises a UBM layer, a copper conductor layer, a nickel conductor layer and a gold conductor layer. The exposed side walls of the UBM layer, the copper conductor layer and the nickel conductor layer are coated with a metal protection layer composed of palladium, palladium alloy, platinum or platinum alloy, and the protection layer does not cover the gold conductor layer. According to the preparation method, the step-shaped side wall is formed through etching steps in a specific sequence, selective self-growth of the protective layer on the titanium / copper / nickel side wall is achieved through chemical plating based on metal equilibrium potential difference, and the protective layer is not deposited on the gold surface. The problems of poor welding and short circuit caused by oxide generated by side wall oxidation and copper diffusion of the copper-nickel-gold bump are effectively solved, the long-term reliability is remarkably improved, meanwhile, the using amount of precious metal is small, the technology is ingenious, and the method is particularly suitable for the high-end display field of liquid crystal driving chips and the like.

A side-suction range hood baffle mounting structure includes a housing with a smoke inlet at the front opening. The baffle covers and connects to the outside of the smoke inlet. The baffle is mounted on the housing via a driving device. The driving device includes a fixed base mounted at the end of the housing and a driving arm mounted on the back of the baffle. A hinge seat extends downward from one side of the fixed base, and a hinge rod extends forward from one end of the driving arm. A mounting seat protrudes from the back of the baffle. The driving device also includes a telescopic rod installed inside the housing, with its end extending out of the housing and connecting to a connecting seat on the back of the baffle, thus opening and closing the baffle. The advantages of this invention are: utilizing an electrically operated opening and closing structure to achieve the opening and closing of the baffle, simplifying transmission components, reducing assembly difficulty, and resulting in a simple structure. The baffle opens and closes more smoothly and steadily under electric drive, improving user comfort and reliability.

The invention relates to the field of petrochemical engineering, in particular to a ZSM-5 molecular sieve with high dispersity and low silica-alumina ratio as well as a preparation method and application of the ZSM-5 molecular sieve. The preparation method provided by the invention comprises the following steps: mixing water, a silicon source, a seed crystal and a mineralizing agent to obtain a mixed solution 1; mixing water, an aluminum source and an alkaline substance to obtain a mixed solution 2; mixing the mixed solution 1 with the mixed solution 2 to obtain a mixed solution 3; mixing the mixed solution 3 with an additive and a template agent to obtain a mixed solution 4; stirring and aging the mixed solution 4, and then crystallizing to obtain a crystallized material; carrying out ammonia exchange on the crystallized material by using an NH4Cl solution, and then calcining to obtain a ZSM-5 molecular sieve; wherein the additive is selected from at least one of poloxamer 188, poloxamer 338, poloxamer 407, Pluronic F127 and Pluronic F68, and the additive is selected from at least one of poloxamer 188, poloxamer 338, poloxamer 407, Pluronic F127 and Pluronic F68. According to the preparation method, the molecular sieve with high dispersity can be obtained.

The utility model discloses a rapid detection device for photovoltaic panel production, relates to the technical field of photovoltaic panel production, and aims to solve the technical problem that dust is easy to diffuse in the process of blowing and pre-cleaning a silicon wafer by a detection device, the rapid detection device comprises a thickness detection equipment main body, and the input end of the thickness detection equipment main body is provided with a conveying belt. A placing plate is placed on the conveying belt, a groove for placing a silicon wafer is formed in the top of the placing plate, two side plates are installed at the top of the conveying belt, a collecting frame is arranged at the tops of the two side plates, hydraulic rods fixed to the collecting frame are embedded in the side plates, a cavity is formed in the side wall of the collecting frame, and a plurality of spoon shells are arranged in the cavity; a plurality of suction structures are arranged in the center in the collecting frame, a driving structure is arranged on the upper half portion of the collecting frame, and a gas port communicated with external nitrogen is formed in the top of the collecting frame. Through cooperation of the collection frame, the suction structure and the driving structure, dust scattering during detection and pre-cleaning can be further avoided.

The utility model discloses a pipe surface cleaning device, include: air blower, blow seat, lower end is equipped with upper arc groove, be equipped with blow -off port and the blow -off port intercommunication's blow -off air duct in the upper arc groove, and blow -off air duct intercommunication air blower's exhaust end, suction seat is set up below blow seat, and the lower arc groove is equipped with the lower arc groove in suction seat upper end, and be equipped with suction port and the suction port intercommunication's suction passage in the lower arc groove, and suction passage intercommunication air blower's suction end, and the projection of blow -off port in horizontal plane is located in the projection of suction port in horizontal plane, and conveying device is used to move the conveying pipe material in the upper arc groove and the lower arc groove. After conveying pipe material to the upper arc groove and the lower arc groove, air blower blows to the pipe material upper surface through blow -off port to make the chippings or impurities attached on the pipe material upper surface be blown off, simultaneously, air blower blows to the pipe material lower surface through suction port to make the chippings or impurities attached on the pipe material lower surface be blown off and be collected in the suction seat.