摘要:
An apparatus in connection with wire water treatment in the approach system of a paper machine, board machine or corresponding web formation machine, which apparatus includes a deaeration tank connected to devices for generating a vacuum inside the deaeration tank. At least one wire water feed pipe extends into the tank, which pipe opens into a vacuum space above the liquid surface level in the tank. A wire water discharge duct is connected to the bottom part of the tank. The feed pipe extends above the liquid level in the tank so that the wire water overflows the edge of the feed pipe onto the liquid level in the tank and the wire water discharge conduit extends downward and is connected to a pump.
摘要:
The invention relates to a separation pump (1) for pumping a fluid mixture (2) of gas (3) and liquid or suspension (4) and for separating gas (3) and liquid or suspension (4) from each other. The separation pump (1) comprising a rotatable drum means (10) for rotating fluid mixture (2). The rotatable drum means (10) having an inner wall (11) and an inner space (12). The rotatable drum means (10) being rotatable for causing liquid or suspension (4) of fluid mixture (2) to form a layer of liquid or suspension (4) on the inner wall (11) and for causing gas (3) of the fluid mixture (2) to migrate towards the axis of rotation (13). The separation pump comprises foam discharging means (15) for discharging foam (16) from the inner space (12) of the rotatable drum means (10). The foam discharging means (15) comprises a second outlet (17).
摘要:
The present invention relates to a degassing centrifugal apparatus (10), such as a degassing centrifugal pump (10) for use in a pulp- or papermaking process. The degassing centrifugal apparatus (10) according to the present invention comprises a rotatable hollow rotor (20) connected to a stationary fluid inlet (14) at one end portion and a stationary liquid outlet (18) at the opposite end portion, and having a gas exhaust (36) for removing gas from the centre thereof. The apparatus further comprises at said inlet end portion means (24) for rotating said fluid and directing it to the inner wall of said rotor (20). The apparatus further comprises a rotatable sensor (42) arranged to measure the layer thickness of a liquid (40) rotating in said apparatus.
摘要:
The present invention relates to a method and arrangement for treating pulp. The method and arrangement according to the invention are suitable for use in production of chemical pulp in situations, where gas must be separated from the pulp and the pulp must be diluted. A characterizing feature of the method and arrangement for treating pulp according to the invention, in which method pulp is transferred from a first pulp treatment apparatus (5) treating pulp in a higher consistency, to a second pulp treatment apparatus (50) treating pulp in a lower consistency, is that gas is separated from the pulp in a consistency higher than said second consistency, pulp is pumped by means of a pump (26) to a second treatment performed in low consistency, with the pulp being diluted with an apparatus (28) located after the pump (26) to said second consistency prior to treatment in said consistency.
摘要:
Plant and process for cleaning and degassing a fibrous suspension. The plant includes a plurality of hydrocyclones, in which each hydrocyclone includes an intake connection, an accepts connection, and a rejects connection and at least two supply lines for feeding liquids into the plurality of hydrocyclones. At least two accepts lines, coupled to the accepts connections of the plurality of hydrocyclones, are structured and arranged to combine liquids cleaned of contaminants in the plurality of hydrocyclones, and at least one accepts draining pipe coupled to the at least two accepts lines is structured and arranged to open directly into a further line downstream. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
摘要:
An apparatus and method serves, e.g., to deaerate, clean or screen a fibrous suspension and is provided with a closed housing and a rotor arranged centrally therein. The rotor puts at least a part of the fibrous suspension guided into the housing into a rotational flow. The fibrous suspension flowing into the housing through the inlet is put into rotation by a guide element acting hydraulically. This increase the efficiency of the apparatus and prevents disturbing turbulences in the apparatus.
摘要:
The invention relates to a process for blending liquid flows, particularly in the approach system to a paper machine. It is characterised by the individual liquid flows being merged, blended with one another, and degassed, all at the same time. In addition, the invention relates to a device for implementing the process, where a degassing device 5, particularly a rotor with degassing holes, is provided in a mixing pipe 1.
摘要:
The present invention relates to a method and apparatus for controlling the operation of an approach system of a paper machine or the like web formation apparatus. Especially preferably the method of controlling the operation of an approach system according to the invention is applicable to be used in connection with paper and paperboard machines as well as in connection with various apparatuses performing non-woven webformating.