A cloth stacking device for filter press

Abstract

A filter press cloth stacking device includes a frame, an upper filter cloth operating assembly, a lower filter cloth operating assembly, a sludge discharge mechanism, a sludge separation and pressing mechanism, a sludge pressing roller, and a sludge stacking and feeding mechanism. The upper and lower filter cloth operating assemblies each include a cloth winding mechanism, a roll-feeding and deflection-detecting mechanism, and a filter cloth deviation correction mechanism. The cloth winding mechanism includes a cloth winding roller that can move along its own axis and rotate about its own axis. The cloth winding roller adjusts its position along its own axis based on the detection results of the roll-feeding and deflection-detecting mechanism. The filter cloth deviation correction mechanism corrects the deviation of the filter cloth. The sludge separation and pressing mechanism includes a sludge pressing plate having a horizontally arranged sludge pressing portion, the length of the sludge pressing plate being at least equal to the width of the lower filter cloth. The sludge pressing roller is height-adjustable, and the axis of the sludge pressing roller is perpendicular to the movement direction of the lower filter cloth. The sludge stacking and feeding mechanism is located at one end of the frame and is used to transport sludge bags formed by sludge wrapped by the upper and lower filter cloths. The present invention can automatically correct the deviation of the filter cloth, keep the filter cloth flat, and prevent sludge leakage.

Description

Technical Field

[0001] The invention belongs to the technical field of filter press equipment, and in particular relates to a cloth stacking device for a cloth stacking type 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 dehydration are horizontal and vertical filter presses. Vertical filter presses utilize stacked cloths to simultaneously filter multiple layers of filter cloth within a filter press frame, offering high efficiency. For example, Chinese invention patent application publication number CN110922018A discloses a laminated filter press apparatus comprising a stacking assembly, a mud spreading device, and a pressing device. The stacking assembly comprises a stacking frame, a stacking device reciprocally mounted on the stacking frame, and an upper filter cloth operating assembly and a lower filter cloth operating assembly. The upper and lower filter cloths, after being operated by the upper and lower filter cloth operating assemblies, clamp the material between the upper and lower filter cloths and move toward the pressing device. The upper and lower filter cloths, containing the sludge, are stacked layer by layer on a liftable support plate below the pressing head of the pressing device, where the sludge is filtered by lowering the pressing head. This laminated filter press apparatus can be operated automatically and has high pressing efficiency. However, because this type of stacked filter press applies mud to a very long length of filter cloth before stacking it into the filter press frame for filtration, the filter cloth is prone to misalignment during mud distribution and unloading. This misalignment not only leads to sludge leakage during the filtration process, but also causes the filter cloth to wrinkle and become uneven, making it difficult to collect and unload the cloth. Furthermore, insufficient filter cloth tension can cause wrinkles and unevenness, which in turn affects the length of the cloth collected, resulting in unequal lengths during cloth feeding and unloading. After the filter press has undergone multiple cycles of cloth distribution and unloading, the length of the filter cloth retracted by the cloth roller is less than the length of the cloth released, affecting the subsequent normal operation of the filter press. Existing filter press equipment still has room for improvement in terms of filter cloth deviation correction, automatic cloth tensioning to maintain consistency, uniform mud distribution, and preventing sludge leakage. Summary of the Invention

[0003] The object of the present invention is to provide a filter press cloth stacking device which can automatically correct the deviation of the filter cloth, keep the filter cloth flat and prevent sludge leakage.

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

[0005] A filter press cloth stacking device comprises a frame, a lower filter cloth is movably laid on the frame; an upper filter cloth operating assembly is arranged on the frame, the upper filter cloth operating assembly comprises a first cloth rolling mechanism, a first roll feeding and deflection detection mechanism and a first filter cloth deviation correction mechanism which are arranged in sequence, the first cloth rolling mechanism comprises a cloth rolling roller which can move along its own axial direction and rotate around its own axis, the upper filter cloth is wound on the cloth rolling roller of the first cloth rolling mechanism, the first roll feeding and deflection detection mechanism detects whether the upper filter cloth is deflected, and the cloth rolling of the first cloth rolling mechanism The filter cloth is wound around the cloth roller of the second cloth roller mechanism, and the cloth roller of the second cloth roller mechanism is moved and adjusted along its own axial direction according to the detection result of the first roll-feeding and deflection measuring mechanism, and the cloth roller of the second cloth roller mechanism is moved and adjusted along its own axial direction according to the detection result of the first roll-feeding and deflection measuring mechanism, and the cloth roller of the second cloth roller mechanism is corrected for the deviation of the lower filter cloth; a mud discharge mechanism for discharging sludge onto the lower filter cloth; a mud dividing and pressing mechanism provided on the frame and located behind the mud discharge mechanism, the mud dividing and pressing mechanism including a mud pressing plate provided on the frame, the mud pressing plate having a mud pressing portion arranged horizontally, and the length of the mud pressing plate is at least equal to the width of the lower filter cloth; A mud pressing roller is arranged on the frame and located behind the mud separating and pressing mechanism. The setting height of the mud pressing roller is adjustable and the axis of the mud pressing roller is perpendicular to the moving direction of the lower filter cloth. After the upper filter cloth passes through the first roll feeding and deviation measuring mechanism and the first filter cloth deviation correcting mechanism, it is laid on the lower filter cloth and passes under the mud pressing roller together with the lower filter cloth; a cloth stacking and feeding mechanism is horizontally movably arranged on the frame. The cloth stacking and feeding mechanism is located at one end of the frame and is used for transporting sludge bags formed by sludge wrapped by the upper filter cloth and the lower filter cloth.

[0006] Furthermore, the first 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; the structure of the second cloth rolling mechanism is the same as that of the first cloth rolling mechanism.

[0007] The transmission mechanism of the present invention is a pair of transmission mechanisms, each of which is connected to the transmission mechanism by a pair of guide wheels, and the transmission mechanism has a pair of guide wheels connected thereto. The pair of guide wheels is connected to the transmission mechanism by a pair of guide wheels, and the transmission mechanism has a pair of guide wheels connected thereto.

[0008] Furthermore, the first filter cloth correcting mechanism includes displacement sensors located on both sides of the filter cloth for detecting whether the filter cloth is deviated left or right, and a first correcting roller and a second correcting roller arranged opposite to each other. The first correcting roller and the second correcting roller can move relative to each other to clamp or loosen the filter cloth; the first correcting roller and the second correcting roller can synchronously adjust their positions in their own axial directions according to the detection signal of the displacement sensor; the structure of the second filter cloth correcting mechanism is the same as that of the first filter cloth correcting mechanism.

[0009] Furthermore, the first filter cloth correcting mechanism also includes: a first bracket and a second bracket located on both sides of the filter cloth, a first correcting roller mounting frame movably arranged on the first bracket, a second correcting roller mounting frame movably arranged on the second bracket, a first correcting drive unit that drives the first correcting roller mounting frame to move, and a second correcting drive unit that drives the second correcting roller mounting frame to move; the two ends of the first correcting roller and the two ends of the second correcting roller are respectively arranged on the first correcting roller mounting frame and the second correcting roller mounting frame, and the first correcting roller and the second correcting roller can both rotate around their own axes, and the first bracket and the second bracket are arranged on the frame.

[0010] Furthermore, the mud pressing plate can be movably arranged on the frame in a vertical direction.

[0011] Furthermore, the mud pressing and separating mechanism also includes a mud separating part and mud guards arranged on both sides of the mud separating part; the mud separating part has at least one protrusion protruding toward the sludge discharge position, and the angle between the two side edges of the projection of the protrusion on the plane where the lower filter cloth is located is between 0 and 180°, and the mud separating part is located in front of the mud pressing part.

[0012] Furthermore, the angle between the two mudguards located on both sides of the mud dividing portion is greater than 0 and less than 180 degrees, and the distance between the head ends of the two mudguards is greater than the distance between the tail ends.

[0013] Furthermore, the distance between the head end of the fender and the top end of the protrusion is greater than 0.

[0014] Furthermore, the cloth stacking and feeding mechanism includes a movable plate frame movably arranged on the frame in the horizontal direction, a cloth supporting plate movably arranged on the movable plate frame, an active roller and a driven roller arranged on the movable plate frame, a chain passing around the active roller and the driven roller, a plate frame moving drive unit driving the movable plate frame to move, and a cloth supporting plate moving drive unit driving the active roller to rotate, the cloth supporting plate passing around the active roller and the driven roller to form a closed ring, and the lower filter cloth is supported by the cloth supporting plate.

[0015] It can be seen from the above technical scheme that the present invention has a high degree of automation and can realize automatic cloth stacking and mud spreading, automatic double correction, no human operation is required, and labor costs are reduced. Moreover, the cloth winding roller can adjust its position in the axial direction according to the detection result of the roll feeding and correction mechanism. Even if the filter cloth is corrected by the upper and lower correction devices or is offset by external force, it can ensure that the filter cloth on the cloth winding roller is neat and flat without offset; at the same time, the cloth winding roller and the filter cloth correction mechanism can both generate tension on the filter cloth to ensure that the filter cloth will not be deformed and wrinkled during operation, which is convenient for the mud spreading and unloading of the filter cloth. At the same time, the tension roller can be eliminated, simplifying the equipment structure and helping to reduce equipment costs; the mud pressing roller can roll the sludge bag so that the thickness of the sludge cake can be adjusted according to actual needs, and ensuring that the sludge bag formed by the upper and lower filter cloths fits tightly to prevent sludge leakage during the filtration process, thereby ensuring a good filtration effect. 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 Schematic diagram of the structure of an embodiment of the present invention;

[0018] Figure 2 This is a structural diagram of the upper filter cloth operating assembly according to an embodiment of the present invention;

[0019] Figure 3 This is a structural diagram of the first roll-feeding and deflection-measuring mechanism according to an embodiment of the present invention;

[0020] Figure 4 Schematic diagram of the structure of the first cloth rolling mechanism according to an embodiment of the present invention;

[0021] Figure 5 Schematic diagram of the matching structure of the cloth roller mounting frame and the base according to an embodiment of the present invention;

[0022] Figure 6 for Figure 5 A partial enlarged schematic diagram of part A;

[0023] Figure 7 This is a schematic structural diagram of a counting wheel according to an embodiment of the present invention;

[0024] Figure 8 This is a structural diagram of the first filter cloth deviation-correcting mechanism according to an embodiment of the invention;

[0025] Figure 9 for Figure 8 A partial enlarged schematic diagram of part B;

[0026] Figure 10 This is a schematic diagram of the first filter cloth deviation-correcting mechanism of the embodiment of the invention from another angle;

[0027] Figure 11 Schematic diagram of the positions of the upper filter cloth and the components of the first filter cloth correction mechanism;

[0028] Figure 12 This is a schematic diagram of a sludge discharge mechanism, a sludge separation and compression mechanism, and a cloth stacking and feeding mechanism arranged on a machine frame according to an embodiment of the present invention;

[0029] Figure 13a This is a schematic structural diagram of a mud press plate and a mud guard according to an embodiment of the present invention;

[0030] Figure 13b A top view of a fender and a mudguard according to an embodiment of the present invention;

[0031] Figure 14 It is a structural schematic diagram of the cloth stacking and feeding mechanism according to an embodiment of the present invention.

[0032] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] 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.

[0034] like Figure 1 As shown, the filter press cloth stacking device of this embodiment includes a frame 1, on which are mounted a first cloth winding mechanism 2, a first cloth feeding and deflection detection mechanism 3, a first filter cloth deviation correction mechanism 4, a second cloth winding mechanism 5, a second cloth feeding and deflection detection mechanism 6, a second filter cloth deviation correction mechanism 7, a cloth stacking and feeding mechanism 8, a sludge discharge mechanism 9, a sludge separation and pressing mechanism 10, and a sludge pressing roller 11. The first cloth winding mechanism 2, the first cloth feeding and deflection detection mechanism 3, and the first filter cloth deviation correction mechanism 4 constitute the upper filter cloth operating assembly, which is used to perform operations such as winding / unwinding, deflection correction, and tensioning on the upper filter cloth 101. The second cloth winding mechanism 5, the second cloth feeding and deflection detection mechanism 6, and the second filter cloth deviation correction mechanism 7 constitute the lower filter cloth operating assembly, which is used to perform operations such as winding / unwinding, deflection correction, and tensioning on the lower filter cloth 102. The lower filter cloth 102 is laid on the frame 1. The frame 1 of this embodiment is provided with a plurality of support rollers 1-1, which are rotatable about their own axes. The lower filter cloth 102 is laid on the support rollers 1-1 and can move forward along the frame 1. The movement direction of the lower filter cloth 102 is perpendicular to the axes of the support rollers 1-1. The use of the support rollers 1-1 to support the lower filter cloth 101 can reduce the resistance to the movement of the filter cloth.

[0035] The upper and lower filter cloth operating assemblies are both mounted on a frame 1. In this embodiment, the first cloth winding mechanism 2, the first roll-feeding and deflection-detecting mechanism 3, and the first filter cloth correction mechanism 4 are sequentially mounted on the upper layer of the frame 1. The second cloth winding mechanism 5, the second roll-feeding and deflection-detecting mechanism 6, and the second filter cloth correction mechanism 7 are sequentially mounted on the lower layer of the frame 1. As a preferred embodiment, this embodiment includes a first filter cloth cleaning mechanism 12 between the first cloth winding mechanism 2 and the first roll-feeding and deflection-detecting mechanism 3, and a second filter cloth cleaning mechanism 13 between the second cloth winding mechanism 5 and the second roll-feeding and deflection-detecting mechanism 6. The filter cloth cleaning mechanisms are used to spray clean the filter cloth. The first and second filter cloth cleaning mechanisms 12, 13 have identical structures, each including two upper and lower spray pipes. This allows for automatic cleaning of both sides of the filter cloth simultaneously, ensuring a clean filter cloth and improving its filtration efficiency.

[0036] The first cloth winding mechanism 2 and the second cloth winding mechanism 5 of the present invention have the same structure, the first roll feeding and deflection measuring mechanism 3 and the second roll feeding and deflection measuring mechanism 6 have the same structure, and the first filter cloth deviation correcting mechanism 4 and the second filter cloth deviation correcting mechanism 7 have the same structure. The following will take the first cloth winding mechanism 2, the first roll feeding and deflection measuring mechanism 3, and the first filter cloth deviation correcting mechanism 4 as examples to illustrate several components in the filter cloth operating assembly. The components in the lower filter cloth operating assembly can refer to the description of the corresponding components in the upper filter cloth operating assembly.

[0037] like Figure 2 As shown, the first cloth winding mechanism 2, the first roll-feeding deflection detection mechanism 3, and the first filter cloth deviation correction mechanism 4 are arranged in sequence. The first cloth winding mechanism 2 is used to reel in / out the upper filter cloth, the first roll-feeding deflection detection mechanism 3 is used to detect whether the upper filter cloth reeled onto the cloth winding mechanism 2 has deflected, and the first filter cloth deviation correction mechanism 4 is used to correct the deviation of the upper filter cloth. The first cloth winding mechanism 2 and the first roll-feeding deflection detection mechanism 3 are arranged correspondingly. After the first roll-feeding deflection detection mechanism 3 detects whether the position of the upper filter cloth has deflected, the first cloth winding mechanism 2 performs corresponding actions based on the detection results of the first roll-feeding deflection correction mechanism 3. The first filter cloth deviation correction mechanism 4 is arranged on the side of the frame 1 close to the filter press frame (not shown), and is mainly used to correct the deviation of the filter cloth during the mud spreading process or the mud unloading process, so that the filter cloth maintains a consistent position and does not deflect.

[0038] like Figure 3As shown, the first roll-feeding deflection measurement mechanism 3 of this embodiment includes a roll-feeding deflection measurement mechanism mounting frame 3-1, a roll-feeding active roller 3-2, a roll-feeding passive roller 3-3, a follower bracket 3-4, a guide rod 3-5, a guide block 3-6, and a deflection measurement sensor 3-7. The roll-feeding active roller 3-2 and the roll-feeding passive roller 3-3 are both mounted on the roll-feeding deflection measurement mechanism mounting frame 3-1 via bearings. The roll-feeding active roller 3-2 and the roll-feeding passive roller 3-3 are positioned relative to each other. The roll-feeding active roller 3-2 is driven by a drive roller drive device 3-10 mounted on the roll-feeding deflection measurement mechanism mounting frame 3-1 and can rotate about its own axis. The roll-feeding active roller 3-2 and the roll-feeding passive roller 3-3 can move relative to each other, allowing them to move closer to or further away from each other. To simplify the structure, the roll-feed driven roller 3-3 in this embodiment is mounted on a slider 3-8, which is mounted on the roll-feed deflection detection mechanism mounting frame 3-1 for vertical movement. The movement of the slider 3-8 is controlled by a lift drive unit 3-9, which in this embodiment uses a pneumatic cylinder, mounted on the roll-feed deflection detection mechanism mounting frame 3-1. When the lift drive unit 3-9 is activated, it moves the slider 3-8 up and down on the roll-feed deflection detection mechanism mounting frame 3-1, thereby moving the roll-feed driven roller 3-3 up and down, moving away from or closer to the roll-feed driving roller 3-1.

[0039] A pair of follower brackets 3-4 are mounted on the roll feed and deflection detection mechanism mounting frame 3-1. These follower brackets 3-4 are located on either side of the roll feed drive roller 3-2 and the roll feed driven roller 3-3, respectively. The follower brackets 3-4 are attached to the roll feed and deflection detection mechanism mounting frame 3-1 via guide blocks 3-6 and guide rods 3-5. The guide rods 3-5 are mounted on the roll feed and deflection detection mechanism mounting frame 3-1, parallel to the roll feed drive roller 3-2. The guide blocks 3-6 are mounted on the guide rods 3-5 and can move along them. The follower brackets 3-4 are in a U-shape, with the upper ends of the follower brackets 3-4 connected to the guide blocks 3-6. A deflection detection sensor 3-7 senses the guide blocks 3-6. When the guide blocks 3-6 move along the guide rods 3-5 until they are detected by the deflection detection sensor 3-7, it indicates that the filter cloth on the follower brackets 3-4 has shifted. The deflection detection sensor 3-7 can be an ultrasonic sensor.

[0040] When the filter press is loading, the feed driven roller 3-2 moves upward under the action of the lifting drive unit 3-9, separating from the feed active roller 3-2. The two rollers are spread apart to reduce the resistance to the filter cloth. When the filter press is unloading, the feed driven roller 3-3 moves downward under the action of the lifting drive unit 3-9, approaching the feed active roller 3-2. The two rollers clamp the filter cloth, creating tension in the filter cloth and effectively leveling the filter cloth so that the cloth winding mechanism 2 can retract the cloth.

[0041] like Figure 4As shown, the first cloth rolling mechanism 2 of this embodiment includes a cloth rolling roller 2-1, a base 2-2, a cloth rolling roller mounting frame 2-3, a cloth rolling roller rotation drive unit 2-4 and a cloth rolling roller translation drive unit 2-5. The cloth rolling roller 2-1 is arranged on the cloth rolling roller mounting frame 2-3. The cloth rolling roller mounting frame 2-3 of this embodiment is roughly " 凵 " shape, the cloth rolling roller 2-1 can be rotatably arranged on the cloth rolling roller mounting frame 2-3 around its own axis. The cloth rolling roller rotation drive unit 2-4 is arranged on the cloth rolling roller mounting frame 2-3, and is used to drive the cloth rolling roller 2-1 to rotate around its own axis. The cloth rolling 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 mud unloading process, the friction can provide a certain tension for the filter cloth, so that the filter cloth does not wrinkle, remains flat, and is convenient for cloth collection. More preferably, a variable frequency reduction motor can be used. When the variable frequency reduction motor is in 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. The forward and reverse rotation of the motor can realize the stacking and mud dispensing of the filter cloth and the collection and unloading of the cloth.

[0042] The cloth roller mounting frame 2-3 is movably mounted on the base 2-2. The moving direction of the cloth roller mounting frame 2-3 is parallel to the axial direction of the cloth roller 2-1. Therefore, when the roll feeding and deflection measuring mechanism 3 detects that the filter cloth has shifted, the position of the cloth roller 2-1 (cloth roller mounting frame 2-3) can be adjusted accordingly, so that the filter cloth can be wound neatly and evenly on the cloth roller 2-1. The cloth roller translation drive unit 2-5 is used to drive the cloth roller mounting frame 2-3 to move on the base 2. Figure 5As 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.

[0043] 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.

[0044] 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 7 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.

[0045] The following further describes the filter cloth deviation correction process between the first feeding and deflection-detecting mechanism 3 and the first 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 moves in the same way), after unloading the mud, the upper filter cloth passes between the feeding active roller 3-2 and the feeding 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 reeling process of the upper filter cloth, if the position of the upper filter cloth deviates, the upper filter cloth will touch the follower bracket 3-4 and cause the follower bracket 3-4 to deviate. When the guide block 3-6 connected to the follower bracket 3-4 moves to the point where it is detected by the deviation sensor 3-7, the deviation sensor 3-7 sends a signal indicating the deviation has been detected. 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 axis, so that the upper filter cloth moves away from the deviated position and the filter cloth on the cloth roller 2-1 is neatly rolled. Through the cooperation of the roll-feeding deviation detection mechanism and the cloth winding mechanism, if the filter cloth still deviates slightly after being corrected by the filter cloth correction mechanism or is deviated by external force, the axial movement of the cloth roller 2-1 is controlled to ensure that the filter cloth on the cloth roller 2-1 is axially aligned and not deviated, facilitating subsequent filter pressing.

[0046] like Figure 8 、 Figure 9 and Figure 10 As shown, the first 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 first filter cloth deflection correction mechanism is mounted on the frame 1 via the first bracket 4-8 and the second bracket 4-9. The first bracket 4-8 and the second bracket 4-9 are respectively located on the left and right sides of the upper filter cloth. Displacement sensors 4-17 are also provided on both sides of the filter cloth edge. The displacement sensors 4-17 are used to detect whether the filter cloth has deflected left or right. 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 first 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.

[0047] 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.

[0048] 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.

[0049] To make the structure more compact and reduce space usage, in this embodiment, a mud press roller 11 is integrated with the first bracket 4-8 and the second bracket 4-9. The ends of the mud press roller 11 are respectively arranged on the first bracket 4-8 and the second bracket 4-9. The mud press roller 11 is located below the lower correction roller 4-2. The mud press roller 11 can rotate about its own axis under the control of a mud press roller drive unit 11-1. The mud press roller drive unit 11-1 drives the mud press roller 11 to rotate, compacting the sludge wrapped by the upper and lower filter cloths. The mud press roller 11 is vertically adjustable in height, that is, the distance between the mud press roller 11 and the filter cloth (sludge bag) is adjustable. In this embodiment, the height of the mud press roller 11 is adjusted 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.

[0050] 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 8 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 11. The thickness of the sludge cake can be controlled by controlling the raising and lowering of the mud pressing roller 11. The thickness of the sludge between the upper and lower filter cloths can be set as needed and can be adjusted arbitrarily between 3 and 120 mm.

[0051] The following further describes the filter cloth deviation correction process of the first filter cloth deviation correction mechanism 4:

[0052] like Figure 11 As shown, the upper filter cloth 101 passes between the upper correction roller 4-1 and the lower correction roller 4-2, and is wound under the mud pressing roller 11, so that it can be laid on the lower filter cloth 101 after mud distribution. During the mud distribution or unloading process of the filter press, the filter cloth will move along the length of the filter cloth. 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 of the filter cloth will send a detection signal. 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 roller to correct the deviation.

[0053] For example, refer to Figure 10As 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.

[0054] 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.

[0055] The filter cloth handling assembly of the present invention has a dual deviation-correcting function. During the operation of the filter press, the (first and second) filter cloth deviation-correcting mechanisms and the (first and second) cloth-winding mechanisms can both correct the deviation of the (upper and lower) filter cloths, preventing the filter cloths from deflecting during both the mud-laying and mud-unloading processes, thereby preventing sludge leakage during the mud-laying and filtration processes. Simultaneously, the filter cloth is not deflected on the cloth-winding roller by the action of the roll-feeding and deflection-detecting mechanisms and the cloth-winding mechanism, maintaining the filter cloth roll neatly on the cloth-winding roller for easy collection and unloading. Furthermore, the filter cloth deviation-correcting mechanisms, the roll-feeding and deflection-detecting mechanisms, and the cloth-winding mechanism all generate tension on the filter cloth, ensuring that the filter cloth remains flat during operation, facilitating both the placement and collection of the filter cloth. 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-laying operation is equal to the length of the filter cloth collected after the filter press completes mud-unloading, thereby ensuring the continued normal operation of the filter cloth in the filter press.

[0056] like Figure 1As shown, a sludge discharge mechanism 9 and a sludge separation and pressing mechanism 10 are sequentially positioned before a sludge pressing roller 11. The sludge discharge mechanism 9 is used to discharge the sludge to be filtered onto a lower filter cloth 102. The sludge discharge mechanism 9 can be implemented in various forms, such as a screw conveyor, a sludge delivery pipe with a sludge discharge port, or an oscillating sludge discharge nozzle. The sludge separation and pressing mechanism 10 is positioned after the sludge discharge mechanism 9 and is used to evenly distribute and flatten the sludge discharged from the sludge discharge mechanism 9 onto the lower filter cloth 102. After the sludge is discharged onto the lower filter cloth 102 by the sludge discharge mechanism 9, it is distributed and flattened by the sludge separation and pressing mechanism 10. The upper filter cloth 101 is then covered with the sludge. The upper and lower filter cloths, wrapped in sludge, pass under the sludge pressing roller 11, which rolls the filter cloths to form a tightly fitted sludge bag. The rolling action of the sludge pressing roller 11 ensures that the sludge adheres tightly to the upper and lower filter cloths, flattening the sludge while forming a sludge bag and preventing sludge leakage during the filtration process.

[0057] like Figure 12 As shown, the mud separation and pressing mechanism 10 includes at least a mud pressing plate 10-1 having a horizontally arranged mud pressing portion 10-1a. The mud pressing plate 10-1 is mounted on the frame 1 via a lifting bracket 10-2, spanning above the lower filter cloth 101. The lifting bracket 10-2 can move up and down in the vertical direction to adjust the distance between the mud pressing plate 10-1 and the lower filter cloth 102. In this embodiment, a lifting cylinder 10-3 is used as a lifting drive unit to control the up and down movement of the lifting bracket 10-2 (mud pressing plate 10-1). The length of the mud pressing plate 10-1 corresponds to the width of the lower filter cloth 102 and is at least equal to the width of the lower filter cloth 102, thereby spreading and flattening the sludge on the lower filter cloth 102. When spreading mud, the mud pressing plate 10-1 is lowered to the position of the required thickness of the mud cake along with the lifting cylinder 10-3, so that mud cakes with uniform thickness can be pressed out. When unloading mud, the mud pressing plate 10-1 is raised to the specified position along with the lifting cylinder 10-3, which reduces resistance and facilitates mud unloading.

[0058] As a preferred embodiment of the present invention, Figure 13a and Figure 13bAs shown, the mud separating and pressing mechanism 10 also includes a mud separating portion 10-4 and mud guards 10-5 arranged on both sides of the mud separating portion 10-4. The mud separating portion 10-4 is formed with at least one protrusion 10-4a in the direction facing the sludge 100 discharged from the sludge discharge mechanism 9 to the lower filter cloth 102. The protrusion 10-4a protrudes toward the sludge discharge position. When the sludge 100 on the lower filter cloth 102 moves with the lower filter cloth 102 to contact the protrusion 10-4a, the protrusion 10-4a can spread the sludge to both sides thereof, thereby achieving the effect of evenly distributing the mud. The projection of the protrusion 10-4a of this embodiment on the plane where the lower filter cloth 102 is located is angular. The angle α between the two sides of the projection of the protrusion 10-4a can be between 0° and 180° (excluding 0° and 180°). When the mud separating portion 10-4 has multiple protrusions 10-4a, the angle α of each protrusion 10-4a can be the same or different. The value of α is related to the moving speed of the lower filter cloth 102 and the amount of sludge discharged. It can be set and adjusted accordingly according to the moving speed of the lower filter cloth and the amount of sludge discharged. For example, when the sludge discharge amount is constant and the running speed of the lower filter cloth is high, α can be appropriately reduced to evenly distribute the mud when the lower filter cloth moves quickly. Conversely, when the running speed of the lower filter cloth is low, α can be appropriately increased to improve the efficiency of even mud distribution.

[0059] The projection of the mud separator 10-4 onto the plane of the lower filter cloth 102 can be formed by stitching together a number of intersecting straight lines or a number of circular arcs. As long as a protrusion protruding toward the sludge discharge location is formed, the purpose of mud separation can be achieved. In this embodiment, the projection of the mud separator 10-4 onto the plane of the lower filter cloth 102 is a broken line formed by stitching together four straight lines, forming two protrusions 10-4a. The angle between the two protrusions 10-4a is the same. Mudguards 10-5 are disposed on either side of the mud separation portion 10-4. In this embodiment, the angle β between the two mudguards 10-5 is greater than 0 and less than 180°, i.e., 0 < β < 180°. Furthermore, the distance between the leading ends of the two mudguards 10-5 is greater than the distance between the trailing ends. The end of each mudguard 10-5 closest to the sludge discharge mechanism 9 is the leading end, while the end farther from the sludge discharge mechanism 9 is the trailing end. The two mudguards 10-5 form a converging shape on either side of the mud separation portion 10-4. More specifically, the distance L between the leading end of each mudguard 10-5 and the top of the protrusion 10-4a is greater than 0°, thereby preventing sludge from leaking from either side of the lower filter cloth 102 during mud pressing. The mud dividing portion 10-4 is provided before the mud pressing portion 10-1a of the mud pressing plate 10-1. After the mud dividing portion 10-4 divides the mud, the mud pressing portion 10-1a presses the mud. The mud guards 10-5 are located on both sides of the mud pressing plate 10-1.

[0060] The cloth stacking and feeding mechanism 8 is provided on the frame 1, and is located at one end of the frame 1 close to the filter press frame (not shown), and is used to stack the filter cloth after the mud is spread into the filter press frame in a stacked manner. Figure 12 and Figure 14 As shown, the cloth stacking and feeding mechanism 8 of the present embodiment includes a movable plate frame 8-1, a cloth supporting plate 8-2, a plate frame moving drive unit 8-3 and a cloth supporting plate moving drive unit 8-4. The movable plate frame 8-1 can be movably arranged on the frame 1 in the horizontal direction. The movable plate frame 8-1 and the frame 1 can be installed in a coordinated manner using a guide rail + slide or a guide groove + slide rail, so that the movable plate frame 8-1 can slide on the frame 1, so that the movable plate frame 8-1 can extend horizontally outward from one end of the frame 1 under the drive of the plate frame moving drive unit 8-3, and then the filter cloth after the mud is spread is fed into the filter press frame. The plate frame moving drive unit 8-3 of the present embodiment adopts a servo motor, and the servo motor drives the horizontal movement of the movable plate frame 8-1 through a screw transmission mechanism. In other embodiments, a cylinder can also be used to drive the horizontal movement of the movable plate frame 8-1. Cloth-holding plate 8-2 is movably arranged on the movable plate frame 8-1, and cloth-holding plate 8-2 can adopt mesh plate or chain plate or belt etc., and mesh plate or chain plate can be made of materials such as stainless steel. Cloth-holding plate 8-2 is wound around on the active roller shaft 8-5 and the driven roller shaft 8-6 that are arranged on the movable plate frame 8-1, forms a closed ring, and rotates on the movable plate frame 8-1 under the drive of the active roller shaft 8-5. Filter cloth is spread on the cloth-holding plate 8-2, moves with the rolling of cloth-holding plate 8-2. The cloth-holding plate mobile drive unit 8-4 of the present embodiment adopts a motor, and the motor drives the active roller shaft 8-5 to rotate by a pair of sprocket wheels (unnumbered), and the active roller shaft 8-5 drives the driven roller shaft 8-6 to rotate synchronously by chain 8-7, thereby further drives cloth-holding plate 8-2 to move. The sludge bag is stacked in a Z-shaped pattern above the filter press frame under the reciprocating sliding of the movable plate frame 8-1 and the rotation of the cloth support plate 8-2, and the filter cloth after sludge is stacked into the filter press frame. After the sludge is filtered in the filter press frame, the movable plate frame and the cloth support plate move in the opposite direction, driving the sludge bag to be unloaded. During unloading, the mud pressing roller and mud pressing plate are raised to reduce the resistance during unloading.

[0061] The present invention can directly discharge the sludge onto the lower filter cloth and be wrapped by the upper and lower filter cloths to form a flat sludge bag. Through the mud pressing and separating mechanism, the sludge is evenly distributed between the upper and lower filter cloths. The mud cake thickness is adjustable and the filter cloth is flat after adjustment, ensuring that there is no leakage of sludge during the mud distribution and filtration process, so as to achieve a better filtration effect. At the same time, the sludge bag can be smoothly transported to the top of the filter press frame through the cloth stacking and cloth feeding mechanism for reciprocating motion to complete the stacking of the sludge bag in the filter press frame. Moreover, after the sludge is filtered in the filter press frame, the cloth can be automatically collected and unloaded, thereby reducing labor costs.

[0062] The filter press of the present invention can complete sludge spreading and unloading, filter cloth deviation correction, filter cloth tensioning, filter cloth cleaning, and uniform mud spreading during filtration, and the mud cake thickness is controllable, and can realize fully automatic and continuous sludge filtration, thereby improving the economy of sludge filtration.

[0063] 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. For example, each drive unit can adopt a conventional drive unit such as a motor, a cylinder, an electric push rod, a hydraulic cylinder, etc.; in addition to the assembly structure of a slide + guide rail between the cloth roller mounting frame and the base, an assembly structure of a slide groove + slider can also be used to achieve sliding installation between the two; such changes and equivalent transformations should be included in the scope of the present invention.

Claims

1. A filter press cloth stacking device, characterized in that: include a frame, on which the lower filter cloth is movably laid; an upper filter cloth operating assembly provided on the frame, the upper filter cloth operating assembly comprising a first cloth winding mechanism, a first roll-feeding and deflection-detecting mechanism, and a first filter cloth deviation-correcting mechanism which are sequentially arranged, the first cloth winding mechanism comprising a cloth winding roller which can move along its own axial direction and rotate around its own axis, the upper filter cloth is wound on the cloth winding roller of the first cloth winding mechanism, the first roll-feeding and deflection-detecting mechanism detects whether the upper filter cloth is deflected, the cloth winding roller of the first cloth winding mechanism moves and adjusts its position along its own axial direction according to the detection result of the first roll-feeding and deflection-detecting mechanism, and the first filter cloth deviation-correcting mechanism corrects the deviation of the upper filter cloth; a lower filter cloth operating assembly provided on the frame, the lower filter cloth operating assembly comprising a second cloth winding mechanism, a second roll-feeding and deflection-detecting mechanism and a second filter cloth deviation-correcting mechanism which are sequentially arranged, the second cloth winding mechanism comprising a cloth winding roller which can move along its own axial direction and rotate around its own axis, the lower filter cloth is wound on the cloth winding roller of the second cloth winding mechanism, the second roll-feeding and deflection-detecting mechanism detects whether the lower filter cloth is deflected, the cloth winding roller of the second cloth winding mechanism moves and adjusts its position along its own axial direction according to the detection result of the second roll-feeding and deflection-detecting mechanism, and the second filter cloth deviation-correcting mechanism corrects the deviation of the lower filter cloth; a sludge discharge mechanism for discharging sludge onto the lower filter cloth; a mud separating and pressing mechanism provided on the frame and located behind the sludge discharge mechanism, the mud separating and pressing mechanism comprising a mud pressing plate provided on the frame, the mud pressing plate having a horizontally provided mud pressing portion, the length of the mud pressing plate being at least equal to the width of the lower filter cloth; a mud pressing roller provided on the frame and located behind the mud separating and pressing mechanism, wherein the height of the mud pressing roller is adjustable and the axis of the mud pressing roller is perpendicular to the moving direction of the lower filter cloth; after the upper filter cloth passes through the first roll-feeding deviation measuring mechanism and the first filter cloth deviation correcting mechanism, it is laid on the lower filter cloth and passes under the mud pressing roller together with the lower filter cloth; a cloth stacking and feeding mechanism disposed on the frame in a horizontally movable manner, the cloth stacking and feeding mechanism being located at one end of the frame and being used for transporting sludge bags formed by sludge wrapped by upper and lower filter cloths; The first filter cloth correcting mechanism is used to correct the filter cloth during the mud spreading process or the filter cloth during the mud unloading process; the first filter cloth correcting mechanism includes displacement sensors 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, and a correcting drive unit, 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 are arranged opposite to each other up and down, when the filter cloth position is offset, the correcting drive unit drives the first correcting roller and the second correcting roller to move up and down to correct the filter cloth; the structure of the second filter cloth correcting mechanism is the same as that of the first filter cloth correcting mechanism.

2. The filter press cloth stacking device according to claim 1, characterized in that: The first 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; the structure of the second cloth rolling mechanism is the same as that of the first cloth rolling mechanism.

3. The filter press cloth stacking device according to claim 1, characterized in that: The cam-type roller conveyor belt conveyor is a roller conveyor belt ...

4. The filter press cloth stacking device according to claim 1, characterized in that: The first filter cloth correcting mechanism also includes: a first bracket and a second bracket located on both sides of the filter cloth, a first correcting roller mounting bracket movably arranged on the first bracket, a second correcting roller mounting bracket movably arranged on the second bracket, a first correcting drive unit that drives the first correcting roller mounting bracket to move, and a second correcting drive unit that drives the second correcting roller mounting bracket to move; both ends of the first correcting roller and the second correcting roller are respectively arranged on the first correcting roller mounting bracket and the second correcting roller mounting bracket, and the first correcting roller and the second correcting roller can both rotate around their own axes, and the first bracket and the second bracket are arranged on the frame.

5. The filter press cloth stacking device according to claim 1, characterized in that: The mud pressing plate is movably arranged on the frame along a vertical direction.

6. The filter press cloth stacking device according to claim 1 or 5, characterized in that: The mud pressing and separating mechanism also includes a mud separating part and mud guards arranged on both sides of the mud separating part; the mud separating part has at least one protrusion protruding toward the sludge discharge position, and the angle between the two side edges of the projection of the protrusion on the plane where the lower filter cloth is located is between 0 and 180 degrees, and the mud separating part is located in front of the mud pressing part.

7. The filter press cloth stacking device according to claim 6, characterized in that: The included angle between the two mudguards located on both sides of the mud dividing portion is greater than 0 and less than 180 degrees, and the distance between the head ends of the two mudguards is greater than the distance between the tail ends.

8. The filter press cloth stacking device according to claim 6, characterized in that: The distance between the head end of the fender and the top end of the protrusion is greater than 0.

9. The filter press cloth stacking device according to claim 1, characterized in that: The cloth stacking and feeding mechanism includes a movable plate frame movably arranged on the frame in the horizontal direction, a cloth supporting plate movably arranged on the movable plate frame, an active roller and a driven roller arranged on the movable plate frame, a chain passing around the active roller and the driven roller, a plate frame moving drive unit driving the movable plate frame to move, and a cloth supporting plate moving drive unit driving the active roller to rotate. The cloth supporting plate passes around the active roller and the driven roller to form a closed ring, and the lower filter cloth is supported by the cloth supporting plate.

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