A filter cloth operation control component for a filter press

Abstract

A filter cloth operation control assembly for a filter press comprises: a frame and a cloth winding mechanism, a cloth feeding and deflection detection mechanism, and a filter cloth correction mechanism sequentially arranged on the frame; the cloth winding mechanism comprises a cloth winding roller movable along its own axis and rotatable about its own axis; the cloth feeding and deflection detection mechanism is used to detect positional deviation of the filter cloth, and the cloth winding roller adjusts its position in its own axis according to the detection signal of the cloth feeding and deflection detection mechanism; the filter cloth correction mechanism comprises displacement sensors located on both sides of the filter cloth for detecting whether the filter cloth has deflected left or right, and first and second deflection correction rollers arranged oppositely, the first and second deflection correction rollers being relatively movable to clamp or release the filter cloth; the first and second deflection correction rollers being synchronously adjusted in their own axis according to the detection signal of the displacement sensors. The present invention can perform multiple deflection corrections on the filter cloth, and the filter cloth correction mechanism, the cloth feeding and deflection detection mechanism, and the cloth winding mechanism can all generate tension on the filter cloth to ensure that the filter cloth is flat during operation.

Description

Technical Field

[0001] The invention belongs to the technical field of filter press equipment, and in particular relates to a filter cloth operation control component for a stacked-cloth filter press. Background Art

[0002] A filter press is a solid-liquid separation device that uses pressure to forcibly remove water from the filter medium. Currently, two main types of equipment for deep sludge dewatering are horizontal and vertical filter presses. Vertical filter presses, due to the length of the filter cloth used, are prone to cloth misalignment during sludge distribution and discharge. This misalignment not only leads to sludge leakage during the filtration process but also causes wrinkling and unevenness in the cloth, making it difficult to collect and discharge the sludge. Furthermore, wrinkling or unevenness in the filter cloth affects the length of the cloth collected, resulting in unequal lengths during cloth feeding and collection. Consequently, after multiple cycles of cloth distribution and discharge, the cloth reel roller retracts less cloth than it laid, compromising the subsequent operation of the filter press. Summary of the Invention

[0003] The object of the present invention is to provide a filter cloth operation control component which can correct the deviation of the filter cloth and ensure that the filter cloth is flat and wrinkle-free.

[0004] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0005] The filter cloth of claim 1, wherein the filter cloth is wound around the cloth roller and the filter cloth is guided relative to the filter cloth by the roller.

[0006] Furthermore, the cloth rolling mechanism also includes: a base arranged on the frame, a cloth rolling roller mounting bracket movably arranged on the base, a cloth rolling roller translation drive unit driving the cloth rolling roller mounting bracket to move, and a cloth rolling roller rotation drive unit driving the cloth rolling roller to rotate, the cloth rolling roller is arranged on the cloth rolling roller mounting bracket, and the moving direction of the cloth rolling roller mounting bracket is parallel to the axial direction of the cloth rolling roller.

[0007] Furthermore, the base is provided with a guide rail extending in a direction parallel to the axis of the cloth rolling roller, and a slide is provided on the guide rail. The slide can move along the guide rail under the drive of the cloth rolling roller translation drive unit, and the cloth rolling roller mounting frame is provided on the slide.

[0008] Furthermore, a limit assembly is arranged between the slide and the base, and the limit assembly includes a first travel switch, a second travel switch, an origin switch and an induction plate arranged on the base; the first travel switch and the second travel switch are arranged at intervals, and the origin switch is located at the midpoint between the first travel switch and the second travel switch; the moving range of the induction plate is between the first travel switch and the second travel switch.

[0009] Furthermore, the cloth winding mechanism also includes a counting component, which includes a counting wheel arranged at the end of the cloth winding roller and a counting switch arranged on the cloth winding roller mounting frame. The counting wheel rotates with the cloth winding roller. The counting wheel is provided with an outwardly protruding protrusion. When the counting wheel rotates, the protrusion can touch the counting switch, triggering the counting switch to count.

[0010] Furthermore, the roll feeding deflection detection mechanism includes: a mounting frame arranged on the frame, a roll feeding active roller and a roll feeding driven roller arranged on the mounting frame, a pair of follower brackets arranged on the mounting frame, a pair of guide rods arranged on the mounting frame, a guide block arranged on the guide rod and movable along the guide rod, a deflection detection sensor for sensing the guide block, and an active roller driving device for driving the roll feeding active roller to rotate around its own axis; the roll feeding active roller and the roll feeding driven roller are arranged opposite to each other and can move relative to each other so as to approach or separate from each other, the follower bracket is connected to the guide block and a follower bracket is arranged on each side of the roll feeding active roller and the roll feeding driven roller, the follower bracket is in the shape of a U, and the guide rod is parallel to the roll feeding active shaft.

[0011] Furthermore, the filter cloth correction mechanism also includes: a first bracket and a second bracket located on both sides of the filter cloth, a first correction roller mounting bracket movably arranged on the first bracket, a second correction roller mounting bracket movably arranged on the second bracket, a first correction drive unit that drives the first correction roller mounting bracket to move, and a second correction drive unit that drives the second correction roller mounting bracket to move; the two ends of the first correction roller and the two ends of the second correction roller are respectively arranged on the first correction roller mounting bracket and the second correction roller mounting bracket, and the first correction roller and the second correction roller can both rotate around their own axes, and the first bracket and the second bracket are arranged on the frame.

[0012] Furthermore, the first correcting roller is arranged on the first correcting roller mounting frame and the second correcting roller mounting frame through a fixed bearing seat, and the second correcting roller is movably arranged on the first correcting roller mounting frame and the second correcting roller mounting frame through a sliding bearing seat, and can approach or move away from the first correcting roller under the control of the correcting roller movement control unit.

[0013] Furthermore, the filter cloth correction mechanism also includes: a mud pressing roller with its two ends respectively arranged on the first bracket and the second bracket, and a mud pressing roller driving unit that drives the mud pressing roller to rotate around its own axis; the distance between the mud pressing roller and the filter cloth is adjustable.

[0014] Furthermore, it also includes a first mounting slide and a second mounting slide, the first bracket is movably set on the first mounting slide, and the second bracket is movably set on the second mounting slide, and the distance between the mud press roller and the filter cloth is adjusted by adjusting the position of the first bracket on the first mounting slide and the position of the second bracket on the second mounting slide.

[0015] As can be seen from the above technical solutions, the filter cloth correction mechanism and the cloth rolling mechanism of the present invention can perform multiple corrections on the filter cloth during the entire working process, so that the filter cloth will not be offset during the mud spreading and mud unloading processes, avoiding sludge leakage during the mud spreading and filter pressing processes. At the same time, the filter cloth correction mechanism, the roll-feeding and deflection-detecting mechanism and the cloth rolling mechanism can all generate tension on the filter cloth, ensuring that the filter cloth is flat during the working process, making it easy to spread the cloth and collect the cloth and unload the mud. The filter cloth is not offset and the filter cloth is neatly rolled, which is conducive to ensuring the smooth operation of the filter press. In a further technical solution, a counting component and / or a position-adjustable mud pressing roller can also be provided. The counting component can ensure that the length of the filter cloth each time it is spread is equal to the length of the cloth after the filter press is completed, ensuring that the filter cloth of the filter press can continue to operate fully automatically; the position-adjustable mud pressing roller can achieve adjustable sludge cake thickness and control the consistency of the mud cake thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic structural diagram of a filter cloth operation control assembly according to an embodiment of the present invention;

[0018] Figure 2 This is a structural diagram of a roll-feeding and deflection-correcting mechanism according to an embodiment of the present invention;

[0019] Figure 3 This is a structural diagram of the cloth rolling mechanism according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic structural diagram of a cloth rolling roller base according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic structural diagram of a counting wheel according to an embodiment of the present invention;

[0022] Figure 6 for Figure 4 A partial enlarged schematic diagram of part A;

[0023] Figure 7 This is a structural diagram of a filter cloth deviation correction mechanism according to an embodiment of the present invention;

[0024] Figure 8 for Figure 7 A partial enlarged schematic diagram of part B;

[0025] Figure 9 This is a structural schematic diagram of the filter cloth deviation correction mechanism according to another embodiment of the present invention;

[0026] Figure 10 It is a schematic diagram of the positions of the upper filter cloth and the components of the filter cloth correction mechanism.

[0027] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The present invention is described in detail below in conjunction with the accompanying drawings. When describing the embodiments of the present invention in detail, for the convenience of explanation, the drawings showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. It should be noted that the drawings are simplified and all use non-precise scales, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features; the terms "positive", "negative", "bottom", "upper", "lower", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0029] like Figure 1As shown, the filter cloth operation control assembly of this embodiment includes a frame 1, a cloth winding mechanism 2, a roll-feeding and deflection detection mechanism 3, and a filter cloth deviation correction mechanism 4, which are sequentially arranged on the frame 1. The cloth winding mechanism 2 is used to wind the filter cloth, the roll-feeding and deflection detection mechanism 3 is used to detect whether the filter cloth wound onto the cloth winding mechanism 2 has deflected, and the filter cloth deviation correction mechanism 4 is used to correct the deviation of the filter cloth pulled out from the cloth winding mechanism 2. The cloth winding mechanism 2 can be used to wind the upper filter cloth 102 and the lower filter cloth 101. In this embodiment, only the cloth winding mechanism for the upper filter cloth 102 is shown. The cloth winding mechanism 2 is arranged above the cloth feeding plane of the frame 1 (the plane where the lower filter cloth 101 is located). However, the same cloth winding mechanism can also be used to wind the lower filter cloth 101. The cloth winding mechanism for winding the lower filter cloth 101 can be arranged below the cloth feeding plane of the frame 1. The cloth winding mechanism 2 and the roll-feeding deviation detection mechanism 3 are correspondingly arranged. After the roll-feeding deviation detection mechanism 3 detects whether the filter cloth position has shifted, the cloth winding mechanism 2 takes corresponding action based on the detection result of the roll-feeding deviation correction mechanism 3. The filter cloth deviation correction mechanism 4 is arranged on the side of the frame 1 near the filter press frame (not shown). It mainly corrects the filter cloth during the mud spreading process or the mud unloading process to ensure that the filter cloth maintains a consistent position and does not shift.

[0030] like Figure 2 As shown, the roll feed deflection detection mechanism 3 of this embodiment includes a mounting frame 3-1, a roll feed active roller 3-2, a roll feed passive roller 3-3, a follower bracket 3-4, a guide rod 3-5, a guide block 3-6, and a deflection detection sensor 3-7. The roll feed active roller 3-2 and the roll feed passive roller 3-3 are both mounted on the mounting frame 3-1 via bearings. The roll feed active roller 3-2 and the roll feed passive roller 3-3 are arranged relative to each other. The roll feed active roller 3-2 is driven by a drive roller drive device 3-10 mounted on the mounting frame 3-1 and can rotate about its own axis. The roll feed active roller 3-2 and the roll feed passive roller 3-3 can move relative to each other, thereby moving them closer to or away from each other. To simplify the structure, the roll feed passive roller 3-3 of this embodiment is mounted on a slider 3-8, which is mounted on the mounting frame 3-1 so as to be movable up and down. The movement of the slider 3-8 is controlled by a lifting drive unit 3-9 mounted on the mounting frame 3-1. In this embodiment, a pneumatic cylinder is used. When the lifting drive unit 3-9 is in motion, it drives the slider 3-8 to move up and down on the mounting frame 3-1, thereby driving the winding driven roller 3-3 to move up and down, away from or close to the winding active roller 3-1.

[0031] A pair of follower brackets 3-4 are provided on the mounting bracket 3-1, and the follower brackets 3-4 are respectively located on both sides of the feeding driving roller 3-2 and the feeding driven roller 3-3. The follower brackets 3-4 are arranged on the mounting bracket 3-1 through the guide blocks 3-6 and the guide rods 3-5. The guide rods 3-5 are arranged on the mounting bracket 3-1 and are parallel to the feeding driving roller 3-2. The guide blocks 3-6 are arranged on the guide rods 3-5 and can move along the guide rods 3-5. The upper end of the follower bracket 3-4 is connected to the guide block 3-6, and the follower bracket 3-4 is in a U shape. The deviation measuring sensor 3-7 is used to sense the guide block 3-6. When the guide block 3-6 is detected, it indicates that the position of the filter cloth on the follower bracket 3-4 has shifted. The deviation measuring sensor 3-7 can adopt an ultrasonic sensor.

[0032] When the filter press is sludge-filtering, the feeding driven roller 3-2 moves upward under the action of the lifting drive unit 3-9 and separates from the feeding driving roller 3-2 to reduce the resistance of the filter cloth running. When the filter press discharges sludge, the feeding driven roller 3-3 moves downward under the action of the lifting drive unit 3-9 and approaches the feeding driving roller 3-2 to make the filter cloth generate tension, which can effectively flatten the filter cloth for the cloth winding mechanism 2 to wind the cloth.

[0033] As Figure 3 As shown, the cloth winding mechanism 2 of this embodiment includes a cloth winding roller 2-1, a base 2-2, a cloth winding roller mounting bracket 2-3, a cloth winding roller rotation drive unit 2-4 and a cloth winding roller translation drive unit 2-5. The cloth winding roller 2-1 is arranged on the cloth winding roller mounting bracket 2-3. The cloth winding roller mounting bracket 2-3 of this embodiment is generally in a U shape, and the cloth winding roller 2-1 is rotatably arranged on the cloth winding roller mounting bracket 2-3 around its own axis. The cloth winding roller rotation drive unit 2-4 is arranged on the cloth winding roller mounting bracket 2-3 and is used to drive the cloth winding roller 2-1 to rotate around its own axis. The cloth winding roller rotation drive unit 2-4 of this embodiment adopts a reduction motor. There is friction between the gears in the reduction motor gearbox. During the sludge discharging process, this friction can provide a certain tension for the filter cloth, so that the filter cloth does not wrinkle and remains flat, which is convenient for cloth winding. More preferably, a variable frequency reduction motor can be adopted. When the variable frequency reduction motor is in the torque mode, it can better apply a certain tension to the filter cloth to ensure that the filter cloth does not wrinkle and remains flat.

[0034] The cloth winding roller mounting bracket 2-3 is movably arranged on the base 2-2. The moving direction of the cloth winding roller mounting bracket 2-3 is parallel to the axial direction of the cloth winding roller 2-1. Thus, when the feeding deviation measuring mechanism 3 detects that the position of the filter cloth has shifted, the position of the cloth winding roller 2-1 (cloth winding roller mounting bracket 2-3) can be adjusted accordingly, so that the filter cloth can be wound neatly and flatly on the cloth winding roller 2-1. The cloth winding roller translation drive unit 2-5 is used to drive the cloth winding roller mounting bracket 2-3 to move on the base 2. As Figure 4As shown, in this embodiment, a slide + guide rail assembly structure is employed between the cloth roller mounting frame 2-3 and the base 2-2, enabling the cloth roller mounting frame 2-3 to slide on the base 2-2. A guide rail 2-21 is provided on the base 2-2, and a slide 2-22 is provided on the guide rail 2-21. The slide 2-22 is driven by the cloth roller translation drive unit 2-5 and can move along the guide rail 2-21. The cloth roller mounting frame 2-3 is mounted on the slide 2-22, thereby allowing it to move along with the slide 2-22 on the base 2-2. The number of guide rails 2-21 and slides 2-22 can be set accordingly according to the design requirements of the product. In this embodiment, a pair of parallel guide rails 2-21 are provided on the base 2-2, and each guide rail 2-21 is provided with two slides 2-22. The cloth winding roller mounting frame 2-3 is provided on the slides 2-22. The cooperation between the slides 2-22 and the guide rails 2-21 can also guide the movement of the cloth winding roller 2-1. The cloth winding roller translation drive unit 2-5 of this embodiment adopts a motor. The motor controls the movement of the slide 2-22 through a screw transmission structure. The output shaft of the motor is connected to the ball screw 2-6 through a coupling (unnumbered). The ball screw 2-6 is provided on the base 2-2 through a fixed seat 2-6a. The screw nut seat 2-7 provided on the ball screw 2-6 is connected to a slide 2-22, so that the motor can control the movement of the slide 2-22 along the guide rails 2-21.

[0035] In order to control the movement of the cloth roller mounting frame 2-3 to only within a certain range, a limit assembly is optionally provided between the slide 2-22 and the base 2-2 in this embodiment. The limit assembly includes a first travel switch 2-8, a second travel switch 2-9, an origin switch 2-10, and a sensor plate 2-11. Although four slides 2-22 are provided in this embodiment, since the four slides 2-22 move synchronously, only one limit assembly needs to be provided between the slide 2-22 and the base 2-2 to limit the movement of the cloth roller mounting frame 2-3. The first travel switch 2-8, the second travel switch 2-9, and the origin switch 2-10 are all disposed on the base 2-2 and are located in the same straight line. The first travel switch 2-8 and the second travel switch 2-9 are respectively used to limit the left and right extreme positions of the slide 2-22 (cloth roller 2-1) during translation. The origin switch 2-10 is located between the first travel switch 2-8 and the second travel switch 2-9 and at the midpoint therebetween. The first travel switch 2-8, the second travel switch 2-9, and the origin switch 2-10 are all connected to a PLC (not shown) to send sensing signals to the PLC. The sensor plate 2-11 is disposed on one of the slides 2-22. When the slide 2-22 is moving, when the induction sheet 2-11 moved thereon triggers the first travel switch 2-8 or the second travel switch 2-9, the first travel switch 2-8 or the second travel switch 2-9 will send out an induction signal. At this time, the cloth roller translation drive unit 2-8 will control the slide 2-22 according to the induction signal so that it cannot move beyond the range between the first travel switch 2-8 and the second travel switch 2-9. When the slide 2-22 moves to the point where the induction sheet 2-11 thereon triggers the origin switch 2-10, the position data of the PLC is reset and counted as the origin. At the same time, the first and second travel switches on the left and right sides are set to allow the slide to move back and forth within the left and right limit positions. If it moves beyond the limit position, the machine will stop and alarm, which will trigger the signal for the slide 2-22 to move back to the origin. The cloth roller 2-1 can only move within a certain range by controlling the limit assembly. More preferably, as Figure 6 As shown, the first travel switch 2-8, the second travel switch 2-9, and the origin switch 2-10 are all disposed on a slide plate 2-12, which is mounted on the base 2-2 via threaded fasteners. The slide plate 2-12 is provided with a slide groove 2-12a. The first travel switch 2-8, the second travel switch 2-9, and the origin switch 2-10 are disposed within the slide groove 2-12a and can be moved within the slide groove 2-12a for position adjustment. Once the position is adjusted, the first travel switch 2-8, the second travel switch 2-9, and the origin switch 2-10 are fixed within the slide groove 2-12a using fasteners such as screws and buckles on both sides. Thus, the positions of the first travel switch 2-8, the second travel switch 2-9, and the origin switch 2-10 can be adjusted as needed, thereby adjusting the range of left and right movement of the cloth winding roller 2-1.

[0036] In order to ensure that the length of the filter cloth released and the length of the filter cloth collected are consistent and do not affect the normal operation of the filter press, as a preferred embodiment of the present invention, a counting assembly is also provided on the cloth roller mounting frame 2-3. The technical assembly includes a counting switch 2-13 provided on the cloth roller mounting frame 2-3 and a counting wheel 2-14 provided at the end of the cloth roller 2-1. The counting wheel 2-14 can rotate with the cloth roller 2-1. The counting wheel 2-14 is provided with a protruding protrusion 2-14a. When the counting wheel 2-14 rotates with the cloth roller 2-1 (forward or reverse, such as forward rotation to feed the cloth and mud, and reverse rotation to collect the cloth and unload the mud), the protrusion 2-14a will touch the counting switch 2-13 during the rotation process, thereby starting the counting switch 2-13 to count and record the number of revolutions of the cloth roller 2-1. By counting, as long as the number of revolutions of the cloth roller 2-1 during cloth feeding and mud discharging is equal to the number of revolutions of the cloth roller 2-1 during cloth collection and mud discharging, the cloth feeding length and the cloth collection length can be ensured to be equal, thereby further ensuring that the filter press can continue to work normally. Figure 5 As shown, the counting wheel 2-14 of this embodiment has three arc-shaped protrusions 2-14a, which are evenly spaced along the circumference. During the rotation of the counting wheel 2-14, the protrusions 2-14a can touch the counting switch 2-13, thereby counting the number of rotations of the cloth winding roller 2-1. The number of protrusions 2-14a provided on the counting wheel 2-14 can be set according to needs, and can be one or more. In theory, the more protrusions there are, the higher the control accuracy.

[0037] The following further describes the filter cloth deviation correction process between the feed and deflection detection mechanism 3 and the cloth winding mechanism 2. Taking the rewinding process of the upper filter cloth as an example (the unwinding and rewinding processes are opposite, and the lower filter cloth's movements are essentially the same), after unloading the mud, the upper filter cloth passes between the feed active roller 3-2 and the feed driven roller 3-3, and simultaneously passes through two follower brackets 3-4. One end of the upper filter cloth is wound around the cloth winding roller 2-1. As the cloth winding roller 2-1 rotates, the unloaded filter cloth is gradually rewound onto the cloth winding roller 2-1. During the winding process of the upper filter cloth, if the position of the upper filter cloth is offset, the upper filter cloth will touch the follower bracket 3-4 and drive the follower bracket 3-4 to deviate. When the guide block 3-6 connected to the follower bracket 3-4 moves to be detected by the deviation sensor 3-7, the deviation sensor 3-7 sends a signal of detecting the deviation, and the cloth roller translation drive unit 2-5 controls the movement of the cloth roller mounting frame 2-3 (slide 2-2) to control the cloth roller 2-1 to move along its own axial direction, so that the upper filter cloth leaves the offset position, and the filter cloth on the cloth roller 2-1 is rolled neatly.

[0038] like Figure 7 、 Figure 8 and Figure 9As shown, the filter cloth deflection correction mechanism of this embodiment includes an upper deflection correction roller 4-1 (first deflection correction roller), a lower deflection correction roller 4-2 (second deflection correction roller), a first deflection correction roller mounting frame 4-3, a first deflection correction drive unit 4-4, a second deflection correction roller mounting frame 4-5, a second deflection correction drive unit 4-6, a deflection correction roller moving drive unit 4-7, a first bracket 4-8, and a second bracket 4-9. The first bracket 4-8 and the second bracket 4-9 are used to mount and support the various components. The filter cloth deflection correction mechanism is mounted on the filter cloth conveyor frame of the stacked filter press via the first bracket 4-8 and the second bracket 4-9, with the first bracket 4-8 and the second bracket 4-9 positioned on the left and right sides of the filter cloth, respectively. Displacement sensors 4-17 are also located on either side of the filter cloth edge to detect left and right deflection of the filter cloth. The displacement sensors 4-17 can be sensors such as travel switches and photoelectric switches. The displacement sensor 4-17 is located before or after the filter cloth correction mechanism in the direction of filter cloth movement. When the filter cloth position is offset, it will be detected by the displacement sensor 4-17. The displacement sensor of the filter cloth sends a detection signal to the upper computer (not shown). The upper computer controls the action of the correction drive unit, drives the correction roller to move up and down, and corrects the filter cloth.

[0039] The first and second correcting roller mounting frames 4-3 and 4-5 are used to mount the upper and lower correcting rollers 4-1 and 4-2. The ends of the upper and lower correcting rollers 4-1 and 4-2 are mounted on the first and second correcting roller mounting frames 4-3 and 4-5, respectively. Both the upper and lower correcting rollers 4-1 and 4-2 are rotatable about their respective axes. The upper and lower correcting rollers 4-1 and 4-2 are positioned vertically relative to each other and can move vertically relative to each other, moving closer to or further away from each other. In this embodiment, the lower correcting roller 4-2 is fixedly mounted on the first correcting roller mounting frame 4-3 and the second correcting roller mounting frame 4-5 via a fixed bearing seat 4-21. The upper correcting roller 4-1 is mounted on the first correcting roller mounting frame 4-3 and the second correcting roller mounting frame 4-5 so as to be movable up and down relative to the lower correcting roller 4-2 via a sliding bearing seat 4-11. The upper correcting roller 4-1 can move up and down relative to the lower correcting roller 4-2. The correcting roller movement drive unit 4-7 is used to drive the upper correcting roller 4-1 in the vertical direction. In this embodiment, the correcting roller movement drive unit 4-7 is a pneumatic cylinder. One pneumatic cylinder is provided on each of the first correcting roller mounting frame 4-3 and the second correcting roller mounting frame 4-5. The piston rod of the pneumatic cylinder is connected to the sliding bearing seat 4-11, and the pneumatic cylinder drives the upper correcting roller 4-1 (the sliding bearing seat) to move up and down. In other embodiments, conventional drive units such as motors and electric push rods can also be used to drive the correcting rollers up and down. Alternatively, a method can be used in which the upper correcting roller is fixed and the lower correcting roller is movable.

[0040] The first deflection-correcting roller mounting frame 4-3 is movably arranged on the first bracket 4-8. The first deflection-correcting roller mounting frame 4-3 and the first bracket 4-8 can be slidably assembled by a slide rail + slider or a slide groove + slider. In this embodiment, a slide groove (not shown) is processed on the first bracket 4-8. The first deflection-correcting roller mounting frame 4-3 is connected to the first bracket 4-8 through a connecting portion 4-10. One end of the connecting portion 4-10 passes through the slide groove on the first bracket 4-8 and is connected to the first deflection-correcting drive unit 4-4. Therefore, the first deflection-correcting drive unit 4-4 installed on the first bracket 4-8 can drive the first deflection-correcting roller mounting frame 4-3 to move up and down through the connecting portion 4-10, approaching or moving away from the first bracket installation plane. The first deflection-correcting drive unit 4-4 in this embodiment adopts a cylinder, but in other embodiments, a conventional drive unit such as a motor or an electric push rod can also be adopted. To ensure the parallelism and perpendicularity of the vertical movement of the first correcting roller mounting frame 4-3, a movable guide portion 4-11 is provided on the first bracket 4-8. The movable guide portion 4-11 is provided with a guide groove 4-11a extending in the vertical direction. The connecting portion 4-10 has a guide protrusion 4-10a disposed within the guide groove 4-11a. The guide protrusion 4-10a of the connecting portion 4-10 can only move up and down within the guide groove 4-11a, thereby ensuring that the first correcting roller mounting frame 4-3 can only move in the vertical direction and will not deviate. The mating structure between the second correcting roller mounting frame 4-5 and the second bracket 4-9 is the same as the mating structure between the first correcting roller mounting frame 4-3 and the first bracket 4-8. For details on the mating structure between the first correcting roller mounting frame 4-3 and the first bracket 4-8, please refer to the description of the mating structure between the first correcting roller mounting frame 4-3 and the first bracket 4-8, and will not be repeated here.

[0041] As a preferred embodiment of the present invention, the filter cloth correction mechanism also includes a mud pressing roller 4-12 and a mud pressing roller driving unit 4-13. The two ends of the mud pressing roller 4-12 are respectively arranged on the first bracket 4-8 and the second bracket 4-9. The mud pressing roller 4-12 is located below the lower correction roller 4-2. The mud pressing roller 4-12 can rotate around its own axis under the control of the mud pressing roller driving unit 4-13. The mud pressing roller driving unit 4-13 drives the mud pressing roller 4-12 to rotate forward or reverse to achieve uniform distribution of sludge on the filter cloth. At the same time, the mud pressing roller 4-12 can also provide driving force for the filter cloth when feeding and unloading the sludge. The height of the mud pressing roller 4-12 in the vertical direction is adjustable, that is, the distance between the mud pressing roller 4-12 and the filter cloth is adjustable. In this embodiment, the height adjustment of the mud pressing roller 4-12 is achieved by the first mounting slide 4-14 and the second mounting slide 4-15. The first bracket 4-8 is movably arranged on the first mounting slide 4-14, the second bracket 4-9 is movably arranged on the second mounting slide 4-15, and the filter cloth correction mechanism is arranged on the filter press frame through the first and second mounting slides.

[0042] The matching structure between the first bracket 4-8 and the first mounting slide 4-14 is the same as the matching structure between the second bracket 4-9 and the second mounting slide 4-15. The matching structure between the second bracket 4-9 and the second mounting slide 4-15 is described below as an example. The second bracket 4-9 and the second mounting slide 4-15 can adopt a sliding matching structure of a slide rail + slider or a slide groove + slider, such as Figure 7 As shown, in this embodiment, a slide groove (not numbered) for accommodating the second bracket 4-9 is provided on the second mounting slide 4-15. The second bracket 4-9 is arranged in the slide groove of the second mounting slide 4-15 and can move up and down along the slide groove. An adjusting screw connecting portion 4-9a is provided on the second bracket 4-9, and the adjusting screw 4-16 is threadedly connected to the adjusting screw connecting portion 4-9a, and the lower end of the adjusting screw 4-16 is connected to the adjusting screw fixing seat 4-18, and the adjusting screw fixing seat 4-18 and the second mounting slide 4-15 maintain a fixed relative position. The adjusting screw fixing seat 4-18 and the second mounting slide 4-15 can be an integrated structure or a split structure. In this embodiment, the adjusting screw fixing seat 4-18 and the second mounting slide 4-15 are a split structure, and the adjusting screw fixing seat 4-18 and the second mounting slide 4-15 are both fixedly mounted on the filter press frame, so that the positions of the adjusting screw fixing seat 4-18 and the second mounting slide 4-15 are fixed and cannot be moved. By rotating the adjusting screw 4-16, the height of the second bracket 4-9 can be adjusted, so that the second bracket 4-9 moves up and down relative to the second mounting slide 4-15, thereby adjusting the height of the mud pressing roller 4-12, and then controlling the lifting and lowering of the mud pressing roller 4-12 to achieve the purpose of controlling the thickness of the sludge cake.

[0043] The following further describes the filter cloth deviation correction process of the filter cloth deviation correction mechanism 4:

[0044] like Figure 10 As shown, the upper filter cloth 102 passes between the upper and lower correction rollers 4-1 and 4-2 and winds down to the bottom of the mud pressing roller 4-12. During the mud distribution or unloading process of the filter press, the filter cloth moves along its length. If the filter cloth deviates during movement, the filter cloth will trigger the displacement sensor 4-17 located on one side of the filter cloth. The displacement sensor will send a detection signal when detecting the displacement of the filter cloth. The filter cloth correction drive unit will start to operate according to the detection signal, controlling one end of the upper and lower correction rollers to rise and the other end to fall. The filter cloth will move toward the end with the higher correction rollers to correct the deviation.

[0045] For example, refer to Figure 9As shown, if the filter cloth deviates to the right, the filter cloth will trigger the displacement sensor 4-17 located on the right side, and the displacement sensor 4-17 will send a detection signal. Then, the first filter cloth deviation correction drive unit 4-4 controls the first deviation correction roller mounting frame 4-3 to move downward, and the second filter cloth deviation correction drive unit 4-6 controls the second deviation correction roller mounting frame 4-5 to move upward, so that the right ends of the upper deviation correction roller 4-1 and the lower deviation correction roller 4-2 are lowered and the left ends are raised, which can quickly correct the deviation of the filter cloth. If the filter cloth deviates to the left, the above action process is reversed.

[0046] Compared with the single-roller correction structure, the upper correction roller 4-1 and the lower correction roller 4-2 can move relative to each other in the vertical direction. When feeding the cloth and discharging mud, the gap between the upper correction roller 4-1 and the lower correction roller 4-2 can be increased, thereby reducing the resistance of the filter cloth to move forward; and when collecting the cloth and unloading the mud, the gap between the upper correction roller 4-1 and the lower correction roller 4-2 can be reduced, and the upper filter cloth 102 can be clamped between the upper correction roller 4-1 and the lower correction roller 4-2 and clamped, so that the filter cloth generates tension, flattens the filter cloth, and prevents the filter cloth from wrinkling and being uneven.

[0047] The present invention has a dual deviation-correcting function. During the operation of the filter press, the filter cloth deviation-correcting mechanism and the cloth-winding mechanism both correct the filter cloth, preventing it from deflecting during both the mud-dispensing and mud-unloading processes, thus preventing sludge leakage during both the mud-dispensing and filtration processes. Simultaneously, the filter cloth is prevented from deflecting on the cloth-winding roller by the roll-feeding and deflection-detecting mechanisms, maintaining a neat roll of filter cloth on the roll-up roller and facilitating mud-collection and unloading. Furthermore, the filter cloth deviation-correcting mechanism, the roll-feeding and deflection-detecting mechanisms, and the cloth-winding mechanism all generate tension on the filter cloth, ensuring that it remains flat during operation and facilitating both the cloth-dispensing and mud-unloading processes. In a preferred embodiment, the sludge cake thickness can be adjusted by adjusting the height of the mud-pressing roller, resulting in stable operation, automated operation, and reduced labor costs. Furthermore, a counting assembly ensures that the length of the filter cloth during each mud-dispensing operation is equal to the length of the filter cloth during mud-unloading and cloth-collecting after the filtration process, thereby ensuring the continued normal operation of the filter cloth in the filter press.

[0048] In the above embodiments, the components are described using the upper filter cloth as an example. The above components can also be applied to the lower filter cloth to achieve double deviation correction of the lower filter cloth, cloth collection and mud unloading, and the length of the lower filter cloth to be collected and released is equal, which can reduce the manufacturing cost and difficulty of the stacked cloth filter press.

[0049] Of course, the technical concept of the present invention is not limited to the above-mentioned embodiments, and many different specific schemes can be obtained based on the concept of the present invention. In the above-mentioned embodiment, a slide + guide rail assembly structure is adopted between the cloth winding roller mounting frame and the base to realize the sliding installation of the cloth winding roller mounting frame on the base. In addition to the slide + guide rail assembly structure, a slide groove + slider assembly structure can also be adopted between the cloth winding roller mounting frame and the base to realize the sliding installation between the two; in addition to using motors, each driving unit can also use conventional driving units such as cylinders, electric push rods, hydraulic cylinders, etc.; such changes and equivalent transformations should be included in the scope of the present invention.

Claims

1. A filter cloth operation control component for a filter press, characterized in that: include: A frame and a cloth winding mechanism, a cloth feeding and deviation measuring mechanism and a filter cloth deviation correcting mechanism which are sequentially arranged on the frame; The cloth rolling mechanism includes a cloth rolling roller that can move along its own axial direction, the filter cloth is wound on the cloth rolling roller, and the cloth rolling roller can rotate around its own axis; The roll-feeding deflection detection mechanism is used to detect the position deviation of the filter cloth wound on the cloth winding roller, and the cloth winding roller adjusts its position in its own axial direction according to the detection signal of the roll-feeding deflection detection mechanism; The filter cloth correcting mechanism includes a displacement sensor located on both sides of the filter cloth for detecting whether the filter cloth is deviated left or right, a first correcting roller and a second correcting roller arranged opposite to each other, a first correcting roller mounting frame, a second correcting roller mounting frame, a first correcting drive unit, a second correcting drive unit, a correcting roller moving drive unit, a first bracket and a second bracket, the first correcting roller and the second correcting roller can move relative to each other to clamp or release the filter cloth; the first correcting roller and the second correcting roller can synchronously adjust their positions in their own axial direction according to the detection signal of the displacement sensor, the first bracket and the second bracket are respectively located on the left and right sides of the filter cloth, and the first correcting roller mounting frame can move up and down The first and second deflection correcting roller mounting brackets are respectively arranged on the first and second deflection correcting roller mounting brackets, and the first and second deflection correcting roller mounting brackets are respectively arranged on the first and second deflection correcting roller mounting brackets. When the filter cloth position is detected to be offset, the displacement sensor sends a detection signal, and the first and second deflection correcting roller mounting brackets are actuated according to the detection signal to control the first and second deflection correcting roller mounting brackets to move up and down.

2. The filter cloth operation control assembly of the filter press according to claim 1, characterized in that: The cloth rolling mechanism also includes: a base arranged on the frame, a cloth rolling roller mounting frame movably arranged on the base, a cloth rolling roller translation drive unit driving the cloth rolling roller mounting frame to move, and a cloth rolling roller rotation drive unit driving the cloth rolling roller to rotate, the cloth rolling roller is arranged on the cloth rolling roller mounting frame, and the moving direction of the cloth rolling roller mounting frame is parallel to the axial direction of the cloth rolling roller.

3. The filter cloth operation control assembly of the filter press according to claim 2, characterized in that: The base is provided with a guide rail extending in a direction parallel to the axis of the cloth rolling roller, and a slide is provided on the guide rail. The slide can move along the guide rail under the drive of the cloth rolling roller translation drive unit, and the cloth rolling roller mounting frame is provided on the slide.

4. The filter cloth operation control assembly of the filter press according to claim 3, characterized in that: A limit assembly is arranged between the slide and the base, and the limit assembly includes a first travel switch, a second travel switch, an origin switch arranged on the base, and a sensing plate arranged on the slide, the first travel switch, the second travel switch, and the origin switch are connected to a PLC and send an induction signal to the PLC; the first travel switch and the second travel switch are arranged at intervals, and the origin switch is located at the midpoint between the first travel switch and the second travel switch; the moving range of the sensing plate is between the first travel switch and the second travel switch.

5. The filter cloth operation control assembly of the filter press according to claim 2, characterized in that: The cloth winding mechanism also includes a counting component, which includes a counting wheel arranged at the end of the cloth winding roller and a counting switch arranged on the cloth winding roller mounting frame. The counting wheel rotates with the cloth winding roller. The counting wheel is provided with an outwardly protruding protrusion. When the counting wheel rotates, the protrusion can touch the counting switch, triggering the counting switch to count.

6. The filter cloth operation control assembly of the filter press according to claim 1, characterized in that: The roll feeding deflection detection mechanism includes: a mounting frame provided on the frame, a roll feeding active roller and a roll feeding driven roller provided on the mounting frame, a pair of follower brackets provided on the mounting frame, a pair of guide rods provided on the mounting frame, guide blocks provided on the guide rods and movable along the guide rods, a deflection detection sensor for sensing the guide blocks, and an active roller driving device for driving the roll feeding active roller to rotate around its own axis; The active winding roller and the driven winding roller are arranged opposite to each other, and can move relative to each other so as to approach or separate from each other. The follower bracket is connected to the guide block, and a follower bracket is provided on each side of the active winding roller and the driven winding roller. The follower bracket is in the shape of a U, and the guide rod is parallel to the active winding roller.

7. The filter cloth operation control assembly of the filter press according to claim 1, characterized in that: The first deviation-correcting roller and the second deviation-correcting roller can both rotate around their own axes, and the first bracket and the second bracket are arranged on the frame.

8. The filter cloth operation control assembly of the filter press according to claim 7, characterized in that: The first correcting roller is arranged on the first correcting roller mounting frame and the second correcting roller mounting frame through a fixed bearing seat, and the second correcting roller is movably arranged on the first correcting roller mounting frame and the second correcting roller mounting frame through a sliding bearing seat, and can approach or move away from the first correcting roller under the control of the correcting roller movement control unit.

9. The filter cloth operation control assembly of the filter press according to claim 7, characterized in that: The filter cloth deviation correction mechanism further includes: a mud pressing roller with its two ends respectively arranged on the first bracket and the second bracket, and a mud pressing roller driving unit for driving the mud pressing roller to rotate around its own axis; the distance between the mud pressing roller and the filter cloth is adjustable.

10. The filter cloth operation control assembly of the filter press according to claim 9, characterized in that: It also includes a first mounting slide and a second mounting slide, the first bracket is movably set on the first mounting slide, and the second bracket is movably set on the second mounting slide, and the distance between the mud press roller and the filter cloth is adjusted by adjusting the position of the first bracket on the first mounting slide and the position of the second bracket on the second mounting slide.

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