Abstract: An arrangement for handling a drilling equipment comprising clamping jaws (11a, 11b) mounted rotatably with respect to the axis of a drill tube (8a, 8b) and a breaking device (7) mounted rotatably about the axis of the drill tube (8a, 8b) and movably in the longitudinal direction of a feed beam (3), which breaking device can be connected to the drill tube (8a, 8b) or the like unrotatably with respect thereto. To move the drill tube (8a, 8b) or the like to the drilling position and away from it, respectively, the breaking device (7) is mounted turnably about an axis transverse to the longitudinal axis of the feed beam (3), which makes it possible to push the horizontal tube (8b) or the like into the breaking device (7) turned to the direction transverse to the feed beam (3) and to fasten it to the breaking device, after which the tube (8b) can be turned into a drilling center between a rotating mechanism (5) and the previous drill tube (8a) by moving the breaking device (7) along the feed beam (3).

Abstract: The pressurized screening device designed for screening fiber pulps, especially paper pulp is provided with a screenplate with perforations, cleaning members being in connection with and moving relative to the screenplate, devices for generating the relative motion between the screenplate and the cleaning members, piping firstly for introducing fiber pulp into the pressurized screening device, secondly for conducting the accepted fiber pulp into the next process stage and thirdly for discharging rejected pulp from the pressurized screening device preferably to be returned into the pressurized screening device, and guiding devices for shifting the flow direction of unscreened fiber pulp to a direction substantially perpendicular to the screenplate. The guiding devices include a combination of several compartments for guiding the flow of fiber pulp which are comprised of side walls, a back wall and baffle blades.

Abstract: A method of removing sulphur oxides from flue gases, in which method lime such as calcium carbonate is fed into a separate reactor space positioned in a boiler. In the reactor space the lime is converted into calcium oxide and carbon dioxide under the influence of the temperature prevailing in the furnace of the boiler. Pressurized air causes the calcinating lime and the obtained calcium oxide to flow through the tubular space, whereby at the other end of the space substantially all lime has been converted into oxide and is fed therefrom into the boiler among its flow of flue gases for the actual desulphuration reaction.

Abstract: The invention relates to a method and an arrangement for supporting the frame of a paper machine or the like. In the method, the frame is supported at a point below it for the time the wire or felt is being changed by means of a separate support member (11) on a normal frame supporting structure (1), whereby it is not necessary to strengthen or support the other structures during the change. The arrangement comprises a support member (11) provided under the frame and comprising a support (14) arranged to be displaced so as to rest on a support element (15) attached to the supporting structure (1) to support the frame. The support (14) supports the frame on its normal supporting structure (1) while the lower vertical spacers (9) of the frame are out of place.

Abstract: A method and an arrangement for fastening a web (4) to a core (10) in a reeling device. In the method glue is applied before the cutting off of the web between the core and the web from above the core, and the web is pressed against the core so that it adheres to it, whereby the web is cut off only after it has adhered to the core. The arrangement comprises fastening means provided with a glue spreading device mounted in the core chute in such a manner that after the core chute has been turned above the support rolls the glue spreading device is positioned between the web and the core above the core, the glue spreading device being arranged to apply glue between the core and the web before the web is cut off.

Abstract: In a combustion air supply system, particularly a secondary air supply system for a recovery furnace, the secondary air inlet ports are divided into two arrays in such a manner that the combustion air coming in through the inlet ports of the first array is directed in part to contact and in part to by-pass a central region in the outer surface of a carbonization layer. The combustion air coming in through the inlet ports of the second array is directed to by-pass the combustion air coming in through the inlet ports of the first array thereabove. The first and second arrays are located on the opposite walls of the combustion chamber, preferably on the front and rear walls. The recovery furnace further comprises a primary air supply zone for blowing combustion air onto the sides of the carbonization layer and a tertiary air supply zone above a waste liquor inlet.

Abstract: The invention relates to a process for the removal of sulfur dioxide from hot flue gases (8) which have been obtained by burning a sulfur-containing substance (4) in a boiler (1). In the process, a substance (6), such as lime or limestone, which reacts with sulfur dioxide to form a solid product is fed into the boiler or into the reaction zone (2) subsequent to the boiler, the hot flue gases (8) are cooled in the reaction zone (2) by feeding into it at maximum such an amount of water as the hot flue gases are capable of evaporating, and the substantially dry solid products are separated (3) in the form of dust (10) from the cooled flue gases. According to the invention, the flue gases (11) thus obtained are scrubbed (13) with an alkaline aqueous solution (15) in order to remove the remaining sulfor dioxide and dust from the flue gases, and part (9') of the cycled scrubbing solution (9) is fed into the boiler (1) or the reaction zone (2) in order to evaporate the water from this solution.

Abstract: A feeding device for a rock drilling machine (3) comprising a cradle (1); and a feeding beam (2) mounted longitudinally displaceably with respect to the cradle (1), the drilling machine (3) being displaceable along the feeding beam. Displacing means comprise a chain (6) forming a closed loop, being arranged to move around turning wheels (4, 5) provided at both ends of the feeding beam (2), and connected stationary with respect to the drilling machine (3). The drilling machine (3) is arranged to be connected stationary with respect to the feeding beam (2) over its whole range of movement relative to the feeding beam (2) and the feeding beam (2) with respect to the cradle (1) over its whole range of movement relative to the cradle (1).

Abstract: A roll (1) for the press of a paper machine or the like, comprising a substantially rigid cylindrical shell body (2); a resilient layer (3) made of a resilient material such as rubber and positioned on the shell body; and a surface layer (4) positioned on the resilient layer. The resilient layer (3) is formed by fastening profiles (9) made of soft and resilient rubber to the surface of the shell body (2) in such a manner that substantially equally wide conduits (10) are defined between the profiles (9). The surface layer (4), in turn, is fastened to the profiles (9) on to the surface facing away from the shell body (2). In order to cool the resilient layer (3) of the roll (1), water is introduced into the conduits (10) between the profiles (9) through one connection conduit (8).

Abstract: The invention relates to a method for analyzing a gas mixture which contains a dust-like solid by separating and directing to analysis a certain quantity of the gas mixture along a sample-taking conduit, wherein a known quantity of liquid is mixed with the separated gas mixture in order to absorb the gas mixture into the liquid. The analysis is performed by analyzing the liquid which has absorbed the gas mixture. The liquid is mixed with the separated gas mixture which is being directed to analysis immediately after the gas mixture has been separated, and the separated gas mixture and the liquid are directed together along the sample-taking conduit to analysis.

Abstract: A method and an arrangement for drilling a hole in a rock (6), wherein a preliminary hole is drilled first, whereafter the drilling is interrupted. Joints between a drill boom (2) and a feeding beam (5) and/or the feeding beam (5) in its longitudinal direction are released so as to move freely in order that the boom (2) and the feeding beam (5) would take a substantially strainless position and the angles (.alpha., .beta.) of the joints and the position of the feeding beam (5) and the drill rod are measured. Thereafter the direction and distance from the preliminary hole (C) to the terminal point (B) of the originally designed hole is computed, and the drilling of the hole is completed.

Abstract: An apparatus for mechanically handling drilling equipment comprising at least drill pipes and a drill bit and drill guide bushing has a carrier. A clamp on the carrier clamps a first drill pipe unrotatably relative to the carrier in a drill-pipe position. An opener is spaced from the clamping axially of the first drill pipe when the first drill pipe is clamped in the drill-pipe position, the opener being pivoted on a first pivot that is spaced from and parallel to the first drill pipe when the first drill pipe is clamped in the drill-pipe for pivoting to an opener position at a second drill pipe that is axially thread-connected onto the first drill pipe and withdrawal therefrom. A first power device so pivots the opener.

Abstract: A drill hole filling method involves drilling of a hole by using a tubular drill rod through which, in the course of drilling, a flushing medium is supplied through at least one opening in a crushing tool into an annular space, defined by the hole and the outer surface of the drill rod, for removing crushed material from the hole. The tubular drill rod is used for delivering a filler into a hole and/or into the ground or bedrock surrounding a hole, at the end of the drilling operation. An apparatus for filling a drill hole includes a drilling machine provided with a passaged neck member for fastening a tubular drill rod thereto. Aligned with the neck member is a supply housing which includes at least one chamber adapted to communicate along at least one connecting duct included in the neck member with a passage in the neck member. The supply housing is provided with a valve which is adapted to carry into said chamber a medium required both in the actual drilling and in filling the drill hole.

Abstract: The invention relates to a travelling centralizer arrangement in a rock drill (2), comprising a travelling centralizer (5) movable along the feeding beam (1) during the drilling. The travelling centralizer (5) of the arrangement comprises two jaw halves (12a, 12b) mounted in a carriage (8) provided for the travelling centralizer so as to be pivoted about journals (13a, 13b) parallel to the feeding beam (1). Each jaw half (12a, 12b) comprises a wheel (9a, 9b) moving along the guideways (10) of the feeding beam (1) and keeping the jaw halves (12, 12b) pressed against each other during normal drilling so that jaws (14a, 14b) form a drill rod centralizer concentric with the drill rod (4). The guideways (10) comprises at the forward end of the feeding beam (1) a portion (L) which extends downward from the straight guideway portion.

Abstract: In a rotary drilling apparatus, a rotary head is advanced against an object to be drilled and a neck element included in the rotary head and connected with drilling member is rotated around its longitudinal axis relative to a rotary head body. The neck element is subjected, in a normal drilling situation to the action of two oppositely-directed forces produced by means of a pressure medium, the first force acting in the drilling direction and the second force acting in the direction opposite to the drilling direction, the first force being greater and the difference between the forces producing a feeding force. The neck element is movable in the direction of the feeding force. In a drilling situation, when the force acting in the direction opposite to the feeding force is greater than the feeding force, the neck element moves in the direction opposite to the drilling direction relative to the rotary head body.

Abstract: A method of controlling the air output of a screw compressor, wherein the average air output of the compressor during operation is adapted to air consumption by throttling the flow of suction air or by connecting the compressor alternately to full air output capacity and idle operation capacity. In order to reduce the power consumption of the compressor, the air output is controlled first by throttling the flow of suction air and by simultaneously measuring underpressure in the suction conduit of the compressor. Thereafter the compressor is controlled so as to operate alternately at full air output capacity and idle operation capacity, and the pressure rise rate in the air-pressure network is measured when the compressor operates at full output capacity and the pressure fall rate is measured when the compressor operates at idle operation capacity.

Abstract: The invention relates to an apparatus for controlling the passage of a moving band (1) or the like in a paper machine or the like. The apparatus comprises a roll (2) mounted at one end turnably with respect to a machine body (3) while the other end is mounted turnably to an adjusting device (6). The adjusting device comprises a turning arm (9) for a roll (2) and an auxiliary arm (10) which are mounted coaxially turnably. The apparatus further comprises one or more air bellows (13) connected between the turning arm (9) and the auxiliary arm (10). Furthermore, at least one liquid bellows (11) is provided between the auxiliary arm (10) and the body or a body part (7). The position of the auxiliary arm (10) with respect to the body is adjusted by varying the amount of liquid in the liquid bellows. By varying the volume of the bellows, the roll (2) is turned about a shaft (8) and the direction of the roll shaft with respect to the longitudinal direction of the band (1) in its transverse direction. (FIG. 2).

Abstract: A method of and an arrangement for leading a web on to a desired wire in a paper machine or the like. When the web moves between two wires, it is transferred on to one wire after the wires have moved in parallel over a distance with the web therebetween making contact with both wires. The transfer takes place when the wires start to move in different directions by sucking the web on to one of the wires by a vacuum acting through said wire. For improving the detachment of the web from the other wire, the direction of travel of the wire is changed abruptly at the parting point of the wires by leading it along a suction box comprising a cover piece formed by cleats and arranged to form an angle in such a way that the point of the angle projects towards the wire. When the wire moves along the cleats of the cover piece of the suction box, its direction of travel is abruptly changed at the point line of the angle, whereby the web is detached from the other wire completely in a moment.

Abstract: A device for feeding a tape which severs a web in a paper or cardboard machine includes a tape and a feeding arrangement for feeding the tape to a space located between a reel spool and a reel drum. The feeding arrangement includes an elongate transfer profile which guides the tape to the space between the reel drum and the reel spool. The transfer profile has an elongate space which is enclosed within a plurality of substantially closed sides and in which the tape travels. One of the substantially closed sides is adapted to permit the tape to emerge from the elongate space.

Abstract: A decker comprises a tank having a thickening drum mounted rotatably therein and including a filtering shell. The inside of the drum communicates with an inlet for feeding mass, whose consistency is to be increased during the thickening process and outlets for discharging the thickened mass after the thickening process. The filtrate separated from the mass being thickened, is arranged in a flow communication from the inside of the thickening drum through the filtering shell of the drum to the bottom portion of the tank. At least one separating member is placed in the bottom portion of the tank outside the drum and forms a partition point or partition line situated transversely with regard to the direction of rotation of the drum and at a predetermined, angular distance from the horizontal plane coinciding with the axis of rotation.