137results about "Damping devices" patented technology

A gimbaled mounting bracket apparatus for aligning an actuator with a receptacle is disclosed, having a mounting ring rotatable around a pair of gudgeons. A concentric rotation ring attached to the pair of gudgeons. The concentric ring is mounted to a base along a rotational axis orthogonal to the gudgeons. The mounting ring retains a shower actuator that is to be aligned with a piping apparatus. The shower actuator can be angularly adjusted relative to piping apparatus to produce a collinear relationship, but is free of any translational movement relative to said receptacle, so as to minimize stresses exerted on said actuator.

A system, in certain embodiments, includes a manifold including an air tube disposed about a water tube. The system also includes multiple nozzles coupled to the manifold, where each nozzle is coupled to the air tube and the water tube.

The invention discloses a steam device of a supercalender and a paper sheet moisture regulation method therefor. In the steam device, a steam box and a spray box are arranged sequentially along paper sheet conveying direction, air atomizers are arranged in the spray box, a steam header pipe is connected with the steam box through steam branch pipes, a compressed air header pipe is connected with the air atomizers through compressed air branch pipes, and a low-pressure water header pipe is connected with the air atomizers through low-pressure water branch pipes. According to the paper sheet moisture regulation method, steam is conveyed into the steam box by the steam header pipe through the steam branch pipes and is sprayed to the surface of a paper sheet through through holes in a bottom plate; and meanwhile, compressed air is conveyed into the air atomizers by the compressed air header pipe through the compressed air branch pipes, low-pressure water is conveyed into the air atomizers by the low-pressure water header pipe through the low-pressure water branch pipes, and water mist is formed by the compressed air and the low-pressure water in the air atomizers and is sprayed to the surface of the paper sheet so as to further regulate the temperature and humidity of the paper sheet. According to the steam device of the supercalender and the paper sheet moisture regulation method therefor, the temperature and humidity of the paper sheet can be effectively regulated so as to improve the calendering effect.

Process and apparatus for spraying a moving fibrous web with at least one jet. The process includes feeding a controlled volume flow of a spray agent to the at least one jet through at least one pulsing valve, and damping and reducing pulses occurring in the controlled volume flow of the spray agent. The apparatus includes at least one jet arranged to be fed with a controlled volume flow of a spray agent, at least one pulsing valve which feeds the controlled volume flow of the spray agent to said at least one jet, and at least one pulse damper arranged to damp or reduce pulses occurring in the controlled volume flow of the spray agent.

A method and apparatus for damping vibration in a paper machine. The apparatus having a dynamic damper which includes a weight suspended by a spring. The spring constant of the spring is changed by means of a control device in order to tune the natural frequency of the dynamic damper. The dynamic damper is tuned to a frequency that is substantially equal to a multiple of the rotational frequency of the roll in the paper machine that is being damped.

The moisture application system of the present invention comprises in combination a first means for applying liquid to a paper web and a second means in contact with the web for scraping off excess liquid and spreading the liquid uniformly across the paper web. The moisture application system of the present invention is particularly useful when combined with a machine calender for finishing a paper web.

The invention discloses a secondary adjusting steam box and a method for adjusting the paper horizontal web water content. The secondary adjusting steam box comprises a steam box body, a master steam pipe and a master air exhaust pipe. A master pipe control valve is arranged at the inlet end of the master steam pipe. A preheating chamber is arranged outside the steam box body. The preheating chamber is arranged on a pipeline between the inlet end of the master steam pipe and the master pipe control valve in a communicating mode through a preheating branch pipe. The steam box body is sequentially provided with an air exhaust area, a steam spray area and a retention area in the advancing direction of paper, wherein the bottom of the air exhaust area is provided with a porous plate or a gap-type plate, the bottom of the steam spray area is provided with a porous plate or a gap-type plate and the bottom of the retention area is opened. Primary adjusting is conducted by using air carried by the paper, so that the problem that the steam heat transfer effect is affected by the air carried by the paper is solved and the secondary adjusting amount is reduced; secondary adjusting is conducted through steam flows of steam chambers of the steam box body, so that the purpose of adjusting the paper horizontal web water content is achieved. Due to the fact that the secondary adjusting amount of the steam flows is small, the flow difference between all the steam chambers is greatly reduced, steam is prevented from flowing among all the steam chambers and the adjusting effect is guaranteed.

This invention relates to a three-stream atomizing nozzle for use with a rewet shower. The nozzle has an air stream divider that separates the atomizing air from the source into three streams. The first stream is a straight air stream staying closest to and around the atomized water jet. The second stream is a swirl running around the first straight stream. The third stream is also a straight stream that wraps around the first straight stream and the second swirl. The nozzle also has a mixing chamber in which the three air streams are mixed together for the atomizing purpose. The nozzle can from the combination of the three air streams produce fine water droplets that are suitable for a paper rewet shower and more importantly creates a tailorable water mass profile. The mass profile can be tailored into a shape that is close to a square shape which is ideal for rewet showers as a square profile creates minimal coupling between adjacent zones.

The invention provides a steam humidification device suitable for multilayer corrugated paper. The steam humidification device comprises a humidification groove which is internally provided with a humidification steam pipe; steam holes are arranged at the lower end of the part of the humidification steam pipe arranged in the humidification groove; the humidification steam pipe is connected with an air pump; the humidification steam pipe is provided with a humidification switch and a steam regulating valve at the outer end of the humidification groove; a humidification sleeve is arranged at the part of the humidification steam pipe arranged in the humidification groove; the upper end of the humidification sleeve is provided with a humidification strip-shaped groove; the two ends of the humidification strip-shaped groove are respectively provided with a humidification branch groove; the bottom of the humidification sleeve is provided with a condensate water recovery pipe. The steam humidification device has the beneficial effects that the corrugated paper is humidified by the steam, and the water is promoted and driven to rapidly permeate into an interlayer of the corrugated paper by the heat of the steam, so that the humidification effect of the corrugated paper can be improved; enhanced humidification can be carried out on the edge part of the corrugated paper by the humidification branch grooves arranged at the two ends of the humidification sleeve, so that the edge of the corrugated paper is prevented from being broken and damaged. The steam humidification device is simple in structure and good in using effect.

A paper web is smoothened by passing the web through a pre-calender device on a paper machine before the application of a coating. The pre-calender device comprises at least one pair of steel rolls, one of which is heated, and a liquid application device which applies a thin film of water to the surface of the web which contacts the heated roll before the web enters the nip between the rolls. The web is then dried after exiting the nip either by wrapping the heated roll and/or by applying heat externally to the web.

The invention relates to field of paper making technology, and provides a making method for glassine paper. The tension between surface molecules of the glassine paper is high, and the glassine paper is good in oil resistance. The method includes the following steps: 1, body paper making; 2, coating and wetting, wherein a wetting machine is adopted for moisture adjustment, a heating device is installed in a wetting machine system, hot water is adopted for wetting, the temperature of the hot water is controlled within 30 DEG C-90 DEG C, the moisture content of the paper is controlled, and wetting is stopped when the moisture content of the paper reaches 20%-21%; 3, storage; 4, excessive calendaring, wherein a calender is adopted for calendaring, at least three calendaring areas are arranged on the calender, the pressure is 1000 KN/m<2>-1200 KN/m<2>, and the temperature is 180 DEG C-220 DEG C; 5, storage heat dissipation; 6, rewinding; 7, packaging and warehousing.

A method and assembly is disclosed for moistening a web of paper or paperboard, the assembly comprising a steam blow cavity open toward a moving web (1). The steam blow cavity houses spray nozzles (5, 6, 7) at least for injecting steam into the cavity so as to form a steam atmosphere therein. Additionally, the steam blow cavity houses spray nozzles (5, 6, 7) for spraying a mist of a heated liquid onto the web (1) within the thus formed steam atmosphere.