An apparatus for transporting a tail end in a fiber web machine from one structural section to another includes nozzles for guiding the tail end on the guide plate by means of an air flow such that the blown air is brought onto a guide plate shaped into a curve in such a way that the air flow of the blown air guides the tail end onto the curved guide plate by means of a bump functioning as an aerodynamic profile formed in the curved guide plate.
An apparatus for transporting a tail end in a fiber web machine from one structural section to another includes nozzles for guiding the tail end on the guide plate by means of an air flow such that the blown air is brought onto a guide plate shaped into a curve in such a way that the air flow of the blown air guides the tail end onto the curved guide plate by means of a bump functioning as an aerodynamic profile formed in the curved guide plate.
An apparatus for transporting a tail end in a fiber web machine from one structural section to another includes nozzles for guiding the tail end on the guide plate by means of an air flow such that the blown air is brought onto a guide plate shaped into a curve in such a way that the air flow of the blown air guides the tail end onto the curved guide plate by means of a bump functioning as an aerodynamic profile formed in the curved guide plate.
An apparatus for measuring dewatering in the wet end of a paper machine includes a measuring receptacle functioning at normal air pressure, in which receptacle the amount of the water of the negatively-pressurized dewatering points of the paper machine is measured by means of a pressure-difference transmitter and of a measuring weir.
D21F 1/66 - Pulp catching, de-watering, or recoveringRe-use of pulp-water
G01F 1/002 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow wherein the flow is in an open channel
G01F 15/08 - Air or gas separators in combination with liquid metersLiquid separators in combination with gas-meters
G01F 23/14 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
5.
METHOD FOR TRANSPORTING A TAIL END IN A FIBER WEB MACHINE FROM ONE STRUCTURAL SECTION TO ANOTHER, AND ALSO AN APPARATUS AND THE USE OF IT
The invention relates to a method and to an apparatus for transporting a tail end (6) in a fiber web machine from one structural section to another in such a way that the apparatus comprises nozzles (8) for guiding the tail end (6) on the guide plate by means of an air flow (4). What is essential in the invention is that the blown air (2) is brought onto a guide plate (1 ) shaped into a curve in such a way that the air flow (4) of the blown air (2) guides the tail end (6) onto the curved guide plate (1) by means of a bump (3) functioning as an aerodynamic profile, i.e. a bulge guiding the air flow (4), formed in the curved guide plate (1 ). In addition, the invention relates to a use of a curved plate (1) for transporting a tail end (6) in a fiber web machine from one structural section to another.
The invention relates to a method and to an apparatus for transporting a tail end (6) in a fiber web machine from one structural section to another in such a way that the apparatus comprises nozzles (8) for guiding the tail end (6) on the guide plate by means of an air flow (4). What is essential in the invention is that the blown air (2) is brought onto a guide plate (1 ) shaped into a curve in such a way that the air flow (4) of the blown air (2) guides the tail end (6) onto the curved guide plate (1) by means of a bump (3) functioning as an aerodynamic profile, i.e. a bulge guiding the air flow (4), formed in the curved guide plate (1 ). In addition, the invention relates to a use of a curved plate (1) for transporting a tail end (6) in a fiber web machine from one structural section to another.
The object of the invention is an apparatus and a method for measuring dewatering in the wet end of a paper machine. What is essential in the invention is that the measuring system (26) comprises an essentially horizontal inlet pipe (10) on the machine level (11), which pipe is installed in the measuring receptacle (27), and in that the separation of air (22) is performed in an expanded pipe section (15) made in the inlet pipe (10) and in the outlet pipe (16) connected to it. A weir plate is installed in the measuring receptacle (27) of the measuring system (26), the weir plate functioning as a measuring weir (8) for measuring the amount of the dewatering flow, and from a pressure difference transmitter (20) installed on one side, which transmitter measures the height of the water surface produced by the measuring weir (8) for measuring the amount of water (7).
G01F 1/34 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
G01F 1/40 - Details of construction of the flow constriction devices
G01F 15/08 - Air or gas separators in combination with liquid metersLiquid separators in combination with gas-meters
G01F 23/14 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
D21F 1/66 - Pulp catching, de-watering, or recoveringRe-use of pulp-water
D21G 9/00 - Other accessories for paper-making machines
The object of the invention is an apparatus for measuring dewatering in the wet end of a paper machine. What is essential in the invention is that the apparatus comprises a measuring receptacle (15) functioning at normal air pressure, in which receptacle the amount of the water (7) of the negatively-pressurized dewatering points of the paper machine is measured by means of a pressure- difference transmitter (20) and of a measuring weir (8).
G01F 1/34 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
G01F 1/40 - Details of construction of the flow constriction devices
G01F 15/08 - Air or gas separators in combination with liquid metersLiquid separators in combination with gas-meters
G01F 23/14 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
D21F 1/66 - Pulp catching, de-watering, or recoveringRe-use of pulp-water
D21G 9/00 - Other accessories for paper-making machines
The invention relates to a method and apparatus for passing a web tail being threaded from one paper machine section to another by way of guiding the tail with the help of an air jet from a transfer plate (1). An essential feature of the invention is to employ a construction (3) rising from the surface (2) of the transfer plate (1) to a height (5) with the shape of a linear ramp or a droplet for guiding the web tail in its travel direction (9) thereby minimizing the contact area between the web tail and the transfer plate (1).
A method for controlling an automatic stall-prevention of a rotation-speed-regulated centrifugal fan. A control automatics is controlled by an automation system of the process wherein, the control automatics stalling is detected from a function of the electric current, voltage and frequency going to the motor of the centrifugal fan.
F04D 27/00 - Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
11.
METHOD AND APPARATUS FOR REDUCING THE WATER AND ENERGY CONSUMPTION OF A PAPER MACHINE WITH THE HELP OF A VACUUM SYSTEM AND OPTIMIZATION OF SOLIDS CONTENT AS WELL AS USE OF THE SAME
The invention relates to a method and an apparatus for reducing the water and energy consumption of a paper machine with the help of a vacuum system and optimization of web solids content as well as a use of the same. An essential feature of the invention is that, on the paper machine wire section (12), water is removed with the help of a hybrid vacuum system (1) serving first the vacuum locations needing a lower vacuum level and then those requiring a higher vacuum level in such a fashion that the hybrid vacuum system (1) removes water on different sections of the paper machine at the vacuum levels rendering the individually maximized energy efficiency. Additionally the solids content on the wire section (12) is optimized with the help of an un-felted and smooth press roll (13) adapted above the wire suction roll (3).
The invention relates to an apparatus for implementing a ground source heat system and further to a method utilizing the same. The invention is characterized in that the system comprises small-diameter and shallow boreholes (8) or equivalent screwably-sunken metal pipes, such as screw piles or heat pipes inserted in the soil. The pipes (13) are inserted in the boreholes (8) for transferring heat by convection and the pipes (13) are connected to a liquid-filled ground source heat circulation (7) placed in a short trench (6), wherefrom heat is further transferred along an insulated pipe (2) to the heating/cooling system of a building (1) or, vice versa, heat is transferred therefrom into the ground.
Method for controlling an automatic stall-prevention of a rotation-speed- regulated centrifugal fan. What is essential in the invention is that the control automatics is controlled by means of the automation system of the process, in which control automatics stalling is detected from a function of the electric current, voltage and frequency going to the motor of the centrifugal fan.
Method for controlling an automatic stall-prevention of a rotation-speed- regulated centrifugal fan. What is essential in the invention is that the control automatics is controlled by means of the automation system of the process, in which control automatics stalling is detected from a function of the electric current, voltage and frequency going to the motor of the centrifugal fan.
An apparatus is provided for implementing water separation in the vacuum system of a paper machine. The apparatus includes a guiding baffle structure connected to an inlet pipe and a water trap vessel, and a droplet separation cell mounted at the mouth of an outlet pipe.
The invention relates to an apparatus for implementing water separation in the vacuum system of a paper machine. The apparatus is characterized by comprising a guiding baffle structure (1) connect to an inlet pipe (8) and a water trap vessel (2) as well as a droplet separation cell (4) mounted at the mouth of an outlet pipe (9).
B01D 45/08 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
17.
METHOD FOR MANUFACTURING THE IMPELLER OF A CENTRIFUGAL COMPRESSOR
Method for manufacturing a composite material impeller of a centrifugal compressor or blower, said impeller being mounted directly on the shaft of an electric motor. The composite material impeller is made using an RTM process, wherein the RTM mold has a core and accurately trimmed fabrics placed therein and forming a structure in such a manner that the fabric layers, or preforms, are pulled onto the core thus achieving a maximally optimized use of materials in the structure.
The invention relates to a method for manufacturing the impeller of a centrifugal, that is, a radial compressor or radial blower, said impeller being mounted directly on the shaft of an electric motor. An essential feature of the invention is that the composite material impeller is made using an RTM process, wherein the RTM mold has a core and accurately trimmed fabrics placed therein in such a manner that the fabric layers, or preforms, are pulled onto the core thus achieving a maximally optimized use of materials in the structure.
B23P 15/04 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from several pieces
B29C 70/02 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements and fillers incorporated in matrix material, forming one or more layers, with or without non-reinforced or non-filled layers
B29C 70/48 - Shaping or impregnating by compression for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM]
B29C 70/54 - Component parts, details or accessoriesAuxiliary operations
F04D 29/28 - Rotors specially adapted for elastic fluids for centrifugal or helico-centrifugal pumps
B29C 33/44 - Moulds or coresDetails thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
B29C 33/52 - Moulds or coresDetails thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles soluble or fusible
19.
METHOD FOR MOVING A TAIL END FROM ONE STRUCTURAL SECTION TO ANOTHER, AND ALSO AN APPARATUS AND THE USE OF IT
Apparatus for moving a tail end from one structural section to another. Essential in the invention is that the apparatus comprises a blowing nozzle (1), a Coanda plate (2), in which holes, apertures or corresponding cuttings (4) have been formed for forming a Coanda effect, and also an air removal plate (3) connected to the Coanda plate.
The invention relates to a paper machine doctor assembly comprising a doctor blade (1) and a blade holder (2) holding the same and a support member (3) mounted on the paper machine frame. Between the blade holder (2) and the member (3) is provided a separate pivot mount (4) adapted onto the member (3) so that it can be dismantled by pulling it outwardly.
A paper machine doctor assembly includes a doctor blade and a blade holder holding the same and a support member mounted on the paper machine frame. An essential feature of the assembly is that a separate pivot mount is provided between the blade holder and the support member, the separate pivot mount enabling the blade holder and the pivot mount to be disconnected from the support member by pulling the pivot mount outwardly and away from the support member.
Method for compensating for uneven shrinkage in a paper web in the press and drying sections of a paper machine, in which there is at least one open draw. In the method, a flow guide/guides are used in the head box, by means of which the machine direction orientation tendency of the fibres is reduced in the edge areas of the web and the angle of detaching of the web from the centre roll is adjusted, by directing onto the web an air jet that is located in the cross direction and the pressure of which can be adjusted in the said direction.
The invention relates to a method and device for guiding a paper web, or corresponding web-like moving track, by using jets of compressed air as an aid. There are two jet directions, one essentially facing the arrival direction of the web (1) and the other essentially facing the departure direction of the web (1), in which case the jets form an area of vacuum between them. Compressed air is fed from one or more inlet ducts (3, 6).
A beam construction, particularly a so-called doctor beam, for use mainly in pulp and paper mills to carry blade holders (7) intended to hold doctor blades. The beam (1) is a composite-construction hollow beam, which also includes at least one composite construction pre-tensioning rod (9, 10, 12). The construction has an essentially triangular cross-section.
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