581 results about "Wood drying" patented technology

The invention discloses a method of log vacuum drying, which is adaptable to drying process of logs with minor diameter. The method comprises carrying out reheating to-be-dried wood, then keeping the reheating to-be-dried wood under vacuum circumstance, enabling drying media to flow along the longitudinal direction of the to-be-heated wood, controlling the temperature and value of absolute pressure according to corresponding graphs of previously determined medium temperature, the absolute pressure and equilibrium moisture content, charging cooling water in a heat exchange system when the final moisture content of the wood meeting the qualification and thereby realizing rapidly cooling and discharging, wherein the to-be-dried wood is log with minor diameter or plates and the ratio of the length of the to-be-dried wood and the average diameter or thickness is 5-15. The method of the invention enables the wood to be uniformly heated, and obviously shortens the time for the procedures of preheating the wood and drying, thereby largely increasing the production efficiency of drying the wood.

The invention discloses a paint spraying and drying device for bamboo and wood toys, which comprises an outer frame, a moving device is fixedly connected to the top of the support plate, an internal gear is fixedly connected to the right side of the vertical plate, and the concentric gear of the second driven wheel The pinion is rotatably connected to the shaft through the rotating shaft connecting rod, and the pinion is meshed and connected to the internal gear. The pinion is rotatably connected to a transmission link, and the transmission link is rotatably connected to a push rod. The bottom end is fixedly connected with a spraying device, and the left side outside the outer frame is provided with an output end of a transmission device, and the surface of the straight-toothed conveyor belt is fixedly connected with a bamboo and wood toy clamping device. The present invention relates to the technical field of bamboo and wood toy processing machinery . The paint spraying and drying device for bamboo and wood toys solves the problems that the existing bamboo and wood toy spray paint causes harm to the workers' bodies, and the spraying and drying are not comprehensive and the efficiency is low. s damage.

The present invention provides a depressurization type drying machine that is capable of repeatedly reducing the pressure, heating and humidifying during drying, uniformly drying a material to be dried, in a short time by applying vibrations to the material to be dried when reducing the pressure, and reducing consumption power without damaging the material to be dried, is excellent in reliability, productivity and energy-saving properties, brings about almost no flaws such as warping, internal cracking, breaking, shrinkage, bending, and surface cracking, especially when drying lumber, is also capable of leaving gloss on the surface of lumber after drying and scent without any discoloring, has high commercial value since the humidity in a building may be permanently controlled in response to the environment after being constructed, and is capable of extracting moisture contained in a material to be dried such as lumber without any waste and effectively utilizing the same as by-products. At least the ceiling portion and sidewall portions are formed roughly like a circular arc swelled outwardly, and reinforcement ribs are provided, which are disposed along the outer circumference of the inner wall parallel to and / or in orthogonal to the lengthwise direction of the drying chamber between the respective outer walls and inner walls of the ceiling portion, the sidewall portions and the floor portion.

A fire retardant treatment process for wood comprises the following steps: firstly, preparing a fire retardant solution 1 and a fire retardant solution 2; then putting the wood into an immersion tank; then vacuumizing the immersion tank to form negative pressure in the immersion tank; then using the negative pressure in the immersion tank to pump the fire retardant solution 1 into the immersion tank; then pressurizing the immersion tank to ensure that the fire retardant solution 1 is immersed into the wood as deep as possible; then discharging redundant fire retardant solution 1 into a fire retardant solution 1 storage tank; after that, vacuumizing the immersion tank to form negative pressure; then using the negative pressure in the immersion tank to pump the fire retardant solution 2 into the tank; then pressurizing the immersion tank to ensure that the fire retardant solution 2 is immersed into the wood as deep as possible; then discharging the redundant fire retardant solution 2 into a fire retardant 2 storage tank; then taking out the well immersed wood; and finally, drying the wood to complete the fire retardant treatment for the wood. According to the fire retardant treatment process for wood, the fire retardant efficiency is high, the fire retardant solution in the wood can be effectively prevented from losing, the smoke and poison gas in the wood can be inhibited from releasing in a fire disaster, and the fire retardant treatment cost for the wood is low.

The invention relates to a wood drying process technology, in particular to a high-temperature and high-humidity rapid drying process method for wood, belonging to the field of wood processing. The high-temperature and high-humidity rapid drying process method comprise the following steps of: (1) humidifying and heating; (2) heating and humidifying pretreatment; and (3) high-temperature and high-humidity drying. According to the invention, the drying process problems that the traditional drying process cannot be used for drying hardwood, difficultly-dried hardwood and fast growing wood easily undergoing shrinkage and collapse after drying are solved, the dried wood is uniform in the distribution of moisture content and low in moisture content gradient in a thickness direction, and the defect that the fast growing wood is shrunk and collapsed after being dried is overcome. Meanwhile, the process flow of the traditional drying technology is simplified, and the most common drying process method with broadest applicable range is formed, is suitable for any varieties of tree wood with the thickness below 100mm and is easier to master by a technician.

A lumber drying kiln employs outside air pressure uses a flexible collapsing bag or cover alone or in combination with walls. The collapsing bag seals against a base to maintain the vacuum. The air pressure against the flexible top keeps the lumber layers from warping or cupping during drying. The lumber stack has alternating layers of hot plates or stickers separating layers of lumber. A bag having an open bottom and made of nylon-reinforced rubber or other strong flexible material is placed over the wood and sealed to the stainless steel platform. A vacuum pump is connected with the bag by means of a manifold and operated to remove air from the enclosed lumber stack, the vacuum strengthening the seal between the base and the bottom of the bag. This chamber design is easily scaled up or down to provide a desired drying capacity.

A method of drying comprises placing a moist material inside a substantially enclosed solar greenhouse. The greenhouse comprises at least one light transmission roof and / or wall panel that is substantially transparent to solar radiation, but resistant to convective and conductive heat transfer. The interior temperature and humidity of the greenhouse are maintained within their pre-determined ranges while the interior moisture of the greenhouse is effectively reduced to allow a controlled drying of the material. A solar greenhouse for the drying process is also disclosed.

The present invention discloses a wood drying method by using solar energy, comprising the steps of: putting the wood to be dried in a drying cabinet (8); supplying heat to the drying cabinet; and stopping the supply of heat when the temperature T2 of the drying cabinet (8) is higher than the setting drying temperature of the wood to dry the wood under the setting drying temperature. The movable drying device by using solar energy has stable running, constant drying temperature and continuous drying function with lower power consumption, higher solar energy conversion efficiency and good drying quality, thereby reducing the drying cost.

The invention belongs to the technical field of wood processing technology, and particularly discloses a wood drying and anticorrosive treatment method. The wood drying and anticorrosive treatment method comprises the following steps: S1, wood loading; S2, prefreezing of a wood; S3, vacuum freeze drying; S4, heating; S5, soaking in a preservative; S6, extraction of the redundant preservative; S7, prefreezing of the wood; S8, vacuum freeze drying; and S9, heating. The wood drying and anticorrosive treatment method has the advantages that the wood is treated by the vacuum freeze drying method, so that corrugation of the wood due to the surface tension caused by liquid water is avoided, and the original tissue structure of wood fibers is retained. In the later anticorrosive treatment process, as the microstructure of the freeze-dried wood is not changed, and the effect of absorbing liquid is good, preservative liquid can be also quickly absorbed without injecting the preservative by pressure, and the leaching resistance is high; furthermore, energy required for injecting the preservative by pressure is saved; and meanwhile, worms and worm eggs in the wood can be killed in the vacuum freeze drying process.

An apparatus and method for generating water vapor or humidity, useful in a variety of applications, including a wood drying kiln. The apparatus may contain a hydrophilic disk, a water supply structure that supplies water so that the water is deposited on the hydrophilic disk, and a motor for rotating the disk at a speed sufficiently high so that water which is deposited on the disk is caused to leave the disk in the form of a mist of particles or droplets which are sufficiently small to evaporate rapidly to generate the water vapor. The disk may be made hydrophilic by covering with a fabric.