21 results about "Air bubble" patented technology

A function liquid is sent under pressure into the flow passages inside the liquid droplet ejection heads. Thereafter, the function liquid is sucked from nozzles of the liquid droplet ejection heads. In filling the liquid function droplet ejection heads with a function liquid, air bubbles in the flow passages inside the liquid droplet ejection heads can be efficiently discharged, whereby the liquid droplet ejection head is surely filled with the function liquid.

The invention relates to an oyster cleaning device which comprises an automatic feeding mechanism. The oyster cleaning device is characterized in that: the device further comprises a pre-cleaning mechanism, a spray cleaning mechanism and a machine frame, wherein the pre-cleaning mechanism comprises a cleaning mesh drum front segment, a rinse tank arranged below the cleaning mesh drum front segment, and an ultrasonic generator arranged in the rinse tank; the spray cleaning mechanism comprises a cleaning mesh drum rear segment, a spray pipe penetrating above the cleaning mesh drum rear segment, and a water collecting tank arranged below the cleaning mesh drum rear segment; and a cleaning mesh drum is positioned, supported and fixed above the machine frame by mesh drums at the two ends. By integrating the cleaning technologies of ultrasonic wave, bubble cleaning, mechanical friction and high-pressure water jet, the device breaks through the traditional manual operation or single mechanical action, so as to greatly improve the oyster processing efficiency, thereby having high using value.

The present invention discloses a thick copper circuit board processing method. The objective of the invention is to solve the technical problems of the squeeze of glass fibers by line shoulder dents and protrusions, existence of air bubbles, poor inter-layer combining force, high possibility of de-lamination and board thinning existing in existing thick copper circuit board laminating technologies. The method of the invention includes the following steps that: at the first surface of a thick copper board, a non-circuit pattern area is etched and thinned, so that a groove can be formed; the groove is flatly filled with liquid resin in a coating manner, and the liquid resin is not cured; and a prepreg and a first outer-layer plate are stacked on the first surface of the thick copper board, and the prepreg, the first outer-layer plate and the thick copper board are laminated, so that the liquid resin and the prepreg can be cured in a laminating process.

The invention relates to a production method of welding rod steel H08A and belongs to the technical field of ferrous metallurgy. The technical problems to be solved are that the continuous casting time is short in the production process of the welding rod steel H08A and a casting billet has obvious air bubble defects. According to the technical scheme, the production method of the welding rod steel H08A comprises steps of rotary furnace smelting, LF refining and continuous casting, wherein in the LF refining, a refining slag adjusting agent with principal components being Al, Al2O3 and CaO isadded for diffusion deoxidation, the degree of activity of oxygen in molten steel is controlled at 0.0020-0.0040%, the content of Als is 0.001-0.005%, silicoferrite is added with the content of Si controlled at 0.02-0.03%, and then calcium treatment is carried out. By establishing a reasonable molten steel control system, welding rod steel H08A continuous casting billets without internal defectscan be stably and continuously produced.

The present invention has as an object to render a photochromic coating layer free from air bubbles and obtain a uniform layer without film thickness unevenness in the coating layer. In the prevent invention, entrained air in a coating fluid stored in a vessel of a coating unit comprising the vessel, a check valve for preventing back-flow of the coating fluid connected to the vessel, and optionally an ejection nozzle connected to the check valve; air existing inside of the check valve; and optionally air existing inside of the ejection nozzle are removed by plugging an outlet of the coating fluid existing downstream of the check valve and then rotating the coating unit on an axis of the vessel and orbiting the coating unit on a revolution axis simultaneously.

The invention discloses a pilot dispensing device, a dispensing machine and a dispensing method of the dispensing machine. The dispensing device comprises a body, an adsorption platform and an annular groove; and the dispensing machine comprises a numerical control device, a dispensing system and the pilot dispensing device. The dispensing method comprises the following steps: receiving a pilot dispensing instruction; carrying out pilot dispensing and dropping glue to the adsorption platform by the dispensing system; receiving a dispensing instruction; and carrying out dispensing and dropping glue to a preset position of a workpiece until the dispensing process is finished by the dispensing system. According to the invention, adverse dispensing phenomena of bubble, excessive glue or insufficient glue and the like generated by glue addition and suction and the like of the dispensing machine are eliminated, thereby obtaining a better dispensing effect, ensuring the dispensing precision and efficiency and improving the quality of products; and in addition, the pilot dispensing process is automatically performed, so that the labor force is saved and the safety of an operation worker is improved. The pilot dispensing device, the dispensing machine and the dispensing method disclosed by the invention have the advantages that the structure is simple and the convenience in operation is realized.

The invention discloses a sealing method and device used for improving the insulation performance of an annular force transducer. According to the sealing method and device, a pressure higher than thepressure required by a service environmental is applied from the outside to fill sealant bubbles of the transducer with a liquid insulating medium, the liquid insulating medium is retained in the sealant bubbles to achieve the effect of a one-way valve so as to prevent water from entering a channel of the transducer, and thus, the sealing requirement of the transducer in special environments is met. The sealing device comprises a pressure vessel. The pressure vessel is provided with an upper cover. The upper cover is clamped on the pressure vessel in a sealing mode through a clamping device.The liquid insulating medium is contained in the pressure vessel. The upper cover is provided with a pressure port. The pressure port communicates with an inner cavity of the pressure vessel. All sealant gaps of the transducer are filled with the liquid insulating medium under the effect of the pressure applied from the outside, so that the insulation performance of the transducer is improved. Thus, the sealing requirement of the transducer in special environments is met, normal work of the transducer under a certain water pressure can be ensured, and the application range of the transducer iswidened.

An air floatation sewage treatment device based on superoxide nano micro-bubbles comprises a wastewater tank, a dosing storage tank and an air floatation tank, the wastewater tank and the dosing storage tank are communicated with the air floatation tank through a mixing pipeline, and a water inlet pump and a nano microbubble generating device are further arranged on the mixing pipeline; the interior of the air floatation tank is divided into a release area, a sedimentation area and a water outlet area, the release area and the sedimentation area are separated by a first flow guide plate, the sedimentation area and the water outlet area are separated through a second flow guide plate, and a water outlet is formed in the bottom of the water outlet area; the sedimentation area is internally further provided with a slag discharging pond which is used for separating the sedimentation area from the upper part of the sedimentation area, the top of the sedimentation area is provided with a slag floating machine used for scraping floating slag at the upper part of the sedimentation area into the slag discharging pond, a slag discharging hole is formed in the bottom of the slag discharging pond, and a plurality of second sludge discharging hoppers which are sequentially arranged are arranged at the bottom of the sedimentation area. The device is reasonable in design, the generated micro-bubbles are small in diameter and long in retention time in water, particles in water can be effectively adhered and separated, and the sewage treatment effect is good.

The invention provides curved surface fitting equipment and a fitting method of the curved surface fitting equipment. The equipment comprises a rack, a control cabinet arranged at the bottom of the rack and a worktable arranged at the top of the control cabinet, wherein the worktable is provided with a rotary table and a vacuum hot pressing device; the rotary table is provided with a plurality of containing grooves for storing hot pressing dies; the control cabinet is internally provided with an electric control device; a driving assembly is arranged at the bottom of the rotary table; the vacuum hot pressing device and the driving assembly are connected to the electric control device; the hot pressing dies are rotated to the lower side of the vacuum hot pressing device through the rotation of the rotary table; vacuum hot pressing fitting is carried out on the hot pressing dies through the vacuum hot pressing device. According to the curved surface fitting equipment and the fitting method of the curved surface fitting equipment, provided by the invention, the fitting precision is high; defects including fitting folds, indentation, pressing damages and water ripples, air bubbles and the like are avoided; a whole hot pressing process is automatically controlled; the operation time is greatly shortened and the production yield and the production efficiency are improved.

The invention discloses a crystallization kettle with a screening function. The crystallization kettle comprises a crystallization kettle body which is placed transversely. A feeding inlet is formed in the top of one end of the crystallization kettle body, and a discharging outlet is formed in the bottom of the other end of the crystallization kettle body. The outer side of the crystallization kettle body is coated with a condensing device. A stirring device is arranged inside the crystallization kettle body in a matched mode. A plurality of overflow ports are formed in the upper end of the side wall of the crystallization kettle body. According to the crystallization kettle, the principle is simple, by using the characteristic that particles containing bubbles have high floating force, the particles in the crystallization kettle can overflow from the overflow ports, accordingly, the procedure that defective particles are selected manually is omitted, the production efficiency is effectively improved, and the manpower cost of an enterprise is substantially reduced.

Provided is a chemical polishing device and glass substrate thereof. The device has: a chemical polishing trough, and a multirow hollow tube 2, and an air-feed pump and a pendent basket. The chemical polishing trough contains the polishing liquid having fluorine-bearing acid in a closed state, and the multirow hollow tube 2 has a series of bubble openings HO towards upside of approx 0.3mm to 2mm in diameter in predefined distance, and the air-feed pump continuously supplies the air to the multirow hollow tube 2 to generate bubbles in the chemical polishing trough. The pendent basket is above the multirow hollow tube 2 and separates the defined diffuse space and keeps a plurality of glass substrates in vertical pose. After the chemical polishing treatment has been processed for several times with a basket as a unit, the reaction resultant which has deposited in the space for depositing is discharged form a discharging port. According to the invention, a device capable of achieving high quality chemical polishing whose air hole is hard to be jammed and which can supply the bubbles onto the glass substrate without position difference can be obtained.