KR-102964724-B1 - Horizontal plate pressure filter

KR102964724B1KR 102964724 B1KR102964724 B1KR 102964724B1KR-102964724-B1

Abstract

The present invention relates to a horizontal plate pressure filter (1), which comprises a plurality of overlapping filter plates (2) for forming filter chambers between at least two adjacent filter plates. An opening actuator device (5) provides opening and closing movements, and an opening mechanism (6) is coupled to the opening actuator device (5) and configured to mechanically transmit the opening and closing movements. In particular, the opening mechanism (6) extends vertically along support columns (4) at a plurality of individual positions, and the opening actuator device (5) includes an electric motor (5a) mechanically actuatedly coupled to the opening mechanism (6) at a plurality of individual positions.

Inventors

포스터 제프리
얀 환
리 지홍

Assignees

메트소 핀란드 오이

Dates

Publication Date: 20260513
Application Date: 20200226
Priority Date: 20190306

Claims (20)

As a horizontal plate pressure filter (1), A plurality of overlapping filter plates (2) for forming filter chambers between at least two adjacent filter plates; A head plate (3) placed on top of the top filter plate; Open actuator device (5) for providing open and closed motion; An opening mechanism (6) coupled to the opening actuator device (5) and the head plate (3), wherein the opening mechanism (6) is configured to mechanically transmit opening and closing movements between the opening actuator device (5) and the head plate (3) to move the head plate (3) away from the uppermost filter plate (2) and individually toward the uppermost filter plate (2); A limited clearance device (2a) coupled between the head plate (3) and the uppermost filter plate (2) and individually between adjacent filter plates (2), wherein the limited clearance device (2a) - The head plate (3) is configured to come into contact with the uppermost filter plate (2), and individually, the adjacent filter plates (2) are configured to come into contact with each other when moving toward one another, and - The limited clearance device (2a) configured to form a limited clearance between the head plate (3) and the uppermost filter plate (2), and individually between adjacent filter plates (2) when moving away from each other; A vertical extension guide device for supporting filter plates and the head plate laterally, and for enabling the filter plates (2) and the head plate (3) to move away from each other and toward each other along a vertical extension guide device; and A support structure for firmly fixing the head plate (3) at least in a closed position of the head plate (3), wherein the support structure comprises at least two vertically extended support columns (4) located on opposite sides of the head plate (3). Includes, The above opening mechanism (6) extends vertically between the above opening actuator device (5) and the above head plate (3), and the above opening mechanism (6) is a plurality of, A horizontal plate pressure filter characterized in that the above-mentioned opening actuator device (5) includes an electric motor (5a) mechanically actuated to each of the plurality of above-mentioned opening mechanisms (6).
In Article 1, A horizontal plate pressure filter characterized in that the above-mentioned opening actuator device (5) comprises a single electric motor (5a) mechanically actuated to each of the plurality of above-mentioned opening mechanisms (6).
In Article 1, A horizontal plate pressure filter characterized in that the support structure comprises at least four vertical extension support columns (4), and the vertical extension support columns (4) are provided as opposing pairs on opposite sides of the head plate (3).
In Article 1, A horizontal plate pressure filter characterized by further including a locking device for coupling the head plate (3) to the support structure in order to fix the head plate (3) to the support structure at least in a closed position of the head plate (3).
In Article 4, A horizontal plate pressure filter characterized by the above locking device including a locking pin in the head plate configured to engage with a corresponding recess of the support structure.
In any one of paragraphs 1 to 5, A horizontal plate pressure filter characterized in that the above opening mechanism (6) includes an elongated flexible member (6c) configured to mechanically transmit opening and closing movements between the above opening actuator device (5) and the head plate (3).
In Article 6, The above opening mechanism (6) is One or more drums (6d) that can be rotated by the above-mentioned open actuator device (5), and - to wind around the drum during the opening movement of the above-mentioned opening actuator device (5), - to be released from the drum during the closing motion of the above-mentioned opening actuator device (5). One or more elongated flexible members (6c) joined to each drum (6d) Includes, A horizontal plate pressure filter characterized by one or more elongated flexible members (6c) additionally operatively coupled to the head plate (3) to transmit opening and closing movements between the opening actuator device (5) and the head plate (3).
In Article 7, Each of the plurality of the above-mentioned opening mechanisms (6) further includes a first pulley (6a), and the first pulley (6a) is positioned above the uppermost position of the head plate (3), and A horizontal plate pressure filter characterized by one or more elongated flexible members (6c) extending from the drum (6d) toward the head plate (3) around the first pulley (6a).
In Article 8, Each of the plurality of the above-mentioned opening mechanisms (6) further includes a second pulley, the second pulley (6b) is located below the first pulley (6a) and is coupled to the head plate (3), and A horizontal plate pressure filter characterized in that at least one slender flexible member (6c) is coupled to the head plate (3) through the second pulley (6b).
In Article 6, One or more elongated flexible members (6c) are provided, and a chain (6c') extends between and around the upper sprocket (6a') and the lower sprocket (6b'), and the chain (6c') is fixed to the head plate (3) between the upper sprocket (6a') and the lower sprocket (6b'), and The lower sprocket (6b') is positioned at the lowest position of the head plate (3) or below it, and the upper sprocket (6a') is positioned at the highest position of the head plate (3) or above it, A horizontal plate pressure filter characterized in that the above-mentioned open actuator device (5) is configured to rotate the above-mentioned upper sprocket (6a').
In any one of paragraphs 1 to 5, The above opening mechanism (6) is, - At least a lead screw extending vertically between the opening actuator device (5) and the head plate (3), and - A nut coupled to the lead screw to convert the rotational motion of the lead screw into the linear motion of the nut Includes, A horizontal plate pressure filter characterized in that the above-described opening actuator device is configured to rotate the lead screw, and the nut is fixed to the head plate (3).
In any one of paragraphs 1 to 5, A horizontal plate pressure filter further comprising an equipment platform (7) supported on the head plate (3), wherein the opening actuator device (5) is disposed on the equipment platform (7).
In any one of paragraphs 1 to 5, A tail plate (8) placed below the lowest filter plate (2), and A press actuator device (9) for pressing the tail plate (8) toward the filter plates (2) to compress the filter plates (2) between the head plate (3) and the tail plate (8). A horizontal plate pressure filter characterized by further including
In Article 13, A horizontal plate pressure filter characterized in that the above press actuator device (9) includes at least a hydraulic cylinder (9a) configured to press the tail plate (8) toward the filter plates (2).
In Article 13, The above press actuator device (9) is A lead screw assembly comprising a lead screw and a nut element, wherein the lead screw assembly is configured to convert rotational motion into translational motion to press the tail plate (8) toward the head plate (3), and At least an electric motor operatively coupled to the lead screw assembly for operation A horizontal plate pressure filter characterized by including
In Article 15, A horizontal plate pressure filter characterized in that the press actuator device (9) comprises a plurality of lead screw assemblies, and the electric motor of the press actuator device (9) is mechanically actuated to one or more lead screw assemblies.
In Article 16, A horizontal plate pressure filter characterized in that the electric motor of the above press actuator device (9) is mechanically actuated to each lead screw assembly.
In any one of paragraphs 1 to 5, A horizontal plate pressure filter characterized by comprising a plurality of filter chambers, or 2 to 30 filter chambers, or 4 to 24 filter plates.
In any one of paragraphs 1 to 5, A horizontal plate pressure filter characterized in that the above-described opening actuator device (5) and the above-described opening mechanism (6) are configured such that, during the operating cycle of the pressure filter, the head plate (3) moves toward and away from the uppermost filter plate (2) of 200 mm - 2000 mm, or 400 mm - 1500 mm, or 800 mm - 1000 mm.
In Article 13, A horizontal plate pressure filter characterized in that the above press actuator device (9) is configured such that, during the operating cycle of the pressure filter, the tail plate (8) moves toward and away from the lowest filter plate of 50 mm - 100 mm.

Description

Horizontal plate pressure filter The present invention relates to a pressure filter, and more specifically, to a horizontal plate pressure filter in which filter chambers are formed between horizontally extended overlapping filter plates. Such a filter is also referred to as a tower press. A horizontal plate pressure filter has a plurality of horizontally extending, overlapping filter plates formed between filter chambers. During operation, the filter plates are pressurized against each other to seal the filter chambers between the filter plates. Then, a slurry is supplied into the filter chambers, and while the filtrate is separated from it, the solid contents of the slurry form a filter cake within the filter chambers. Subsequently, the filter plates move apart from each other to open the filter chambers so that the filter cake can be discharged therefrom, and then move further toward each other to close the filter chambers again. Then, this sequence is repeated. Typically, the movement of filter plates apart from and toward each other for opening and closing the filter chambers is actuated by a separate set of actuators from those used to pressurize the filter plates against each other to seal the chambers. This is because the pressure and force required to seal the filter chambers are significantly greater than those required to open and close them, and the actuators must be sized accordingly for each purpose. Generally, both sets of actuators are hydraulically operated because hydraulic actuators provide both an excellent force-to-weight ratio advantageous for achieving the required sealing pressure and the superior positional control necessary to open and close the filter chambers. In particular, hydraulic cylinders most commonly used for linear motion, such as those connected to horizontal filter presses, present some difficulties in synchronizing the movement of multiple hydraulic cylinders. To ensure precise synchronization, control feedback loops containing position sensors and servo-controlled valves have frequently been used, but this results in an expensive and delicate arrangement. In addition to the required sealing pressure, multiple actuators are necessary in horizontal plate pressure filters to open and close the filter chambers so that a uniform load distribution can be achieved. Furthermore, precise synchronization of the actuators is required to maintain uniform levels and movements of the head plate and filter plates. Uneven movement or uneven orientation of the head plate and/or filter plates can, in turn, cause jamming of the filter plates and/or head plate along the guide rails, or even damage the limited clearance arrangement due to uneven loads on them. Publications US 3 981 802 A and WO 03/068271 A both relate to horizontal plate pressure filters. Hereinafter, the present invention will be described in more detail by preferred embodiments with reference to the accompanying drawings. FIG. 1 is a schematic side view of a horizontal plate pressure filter according to one embodiment of the present invention. Figure 2 is a schematic top view of the horizontal plate pressure filter of Figure 1. Figure 3 schematically illustrates the horizontal plate pressure filter of Figure 1 from the end side. FIG. 4 schematically illustrates the pulley arrangement of an opening mechanism according to the embodiment shown in FIG. 1. FIG. 5 schematically illustrates a horizontal plate pressure filter according to another embodiment of the present invention from the end side. FIG. 6 schematically illustrates the pulley arrangement of an opening mechanism according to the embodiment shown in FIG. 5. FIG. 7 is a schematic side view of a horizontal plate pressure filter according to another embodiment of the present invention. Figure 8 is a schematic top view of the horizontal plate pressure filter of Figure 7. FIG. 9 illustrates an alternative open actuator device having two electric motors connected to a horizontal plate pressure filter according to another embodiment of the present invention. According to the present invention, a horizontal plate pressure filter (1) is provided. The plate pressure filter includes a plurality of overlapping filter plates (2) for forming a filter chamber between at least two adjacent filter plates, and a head plate (3) arranged on top of the top filter plate. The plate pressure filter (1) further comprises an open actuator device (5) for providing open and closed motion. In the context of the present invention, the term actuator refers to a device that generates motion to move another entity. In particular, the open actuator device (5) comprises an electric motor (5a) that generates open and closed motion. Naturally, one or more electric motors (5a) may be provided. Preferably, but not necessarily, the electric motor (5a) may be provided as an induction motor, enabling completely enclosed, reliable, and robust operation. When such an electric motor (5a) is used, the open