Sludge drying treatment equipment and treatment method based on box type diaphragm pressure filtration

Abstract

The present application relates to sludge drying treatment technical field, specifically a kind of sludge drying treatment equipment and processing method based on box type diaphragm filter pressing, including rack, hydraulic mechanism being located at one end of rack and multiple filter plates movably being located on rack, both sides of filter plate are respectively fixed with one ear, ear is slidably arranged on rack, and one set of evacuation structure is arranged on the both sides of rack;Evacuation structure includes: assembly plate movably arranged on the side of rack, after filter pressing is finished, assembly plate can be driven by linear drive module being located on the side of rack, and intermittently move along the length direction of rack;Filter cake is not only subjected to vertical vibration force by filter plate in movement, but also can generate horizontal direction inertia drag, and this compound motion forms dynamic shear force at filter cake and filter cloth interface, so that filter cake particles are in the state of continuous relative slip, which greatly improves the shedding effect and efficiency of filter cake.

Description

Technical Field

[0001] This invention relates to the field of sludge drying technology, specifically a sludge drying equipment and method based on box-type diaphragm filter press. Background Technology

[0002] Sludge drying is a crucial step in achieving sludge reduction, harmlessness, and resource utilization. Among various dewatering processes, diaphragm filtration technology, with its ability to perform secondary pressurization during the pressing stage, significantly improves sludge dewatering efficiency and has become the mainstream deep dewatering method. After the filtration process, the filter plates need to be removed one by one to allow the filter cake to detach from the filter cloth. In conventional operation, this process is automatically completed by a plate-pulling trolley: the trolley moves along the guide rail, hooking and pulling apart each filter plate in sequence; when the filter plate is pulled to the end of its stroke, the electric cam device installed on the plate-pulling trolley is activated, driving the filter plate to produce a momentary upward-downward motion. This vibration mechanism aims to use inertial force to break the adhesion between the filter cake and the filter cloth, causing the filter cake to automatically peel off under gravity.

[0003] However, in existing equipment, during filter plate retraction, the vibration of the filter plate only occurs at a fixed position at the end of the stroke, and the vibration pattern is singular, limited to vertical swaying motion. This design can only effectively overcome the vertical adhesion force between the filter cake and the filter cloth, and it is difficult to effectively break the lateral adhesion force caused by cloth weave embedding, particle wedging, or local vacuum adsorption. In addition, the fixed vibration position cannot cover the entire surface of the filter plate, which easily leads to local residue of filter cake and incomplete detachment. This not only reduces the cake removal efficiency and increases manual cleaning costs, but also affects subsequent filtration cycles and equipment operational stability in the long run. Summary of the Invention

[0004] The purpose of this invention is to provide a sludge drying treatment device and method based on box-type diaphragm filter press to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sludge drying treatment device based on a box-type diaphragm filter press, comprising a frame, a hydraulic mechanism located at one end of the frame, and multiple filter plates movably mounted on the frame. Each filter plate has a hanging lug fixed to both sides, which slidably rests on the frame. A set of retraction structures is provided on each side of the frame. The retraction structure includes: an assembly plate movably mounted on the side of the frame; after filtration, the assembly plate can be driven by a linear drive module located on the side of the frame, intermittently moving along the length of the frame; and an assembly seat mounted on the assembly plate, with a guide rail fixed to the assembly plate. The assembly seat slidably fits into the guide rail, and a guide block is fixed on the assembly seat. The block is slidably connected to a vertical arm, which is equipped with a lever mechanism that engages with the hanging lugs. An intermittent lifting mechanism is connected to the vertical arm, and two limiting rollers are movably mounted on the mounting base. The two limiting rollers are connected to a swing mechanism mounted on the mounting base. The mounting base can be driven by a threaded drive mechanism mounted on the mounting plate to slide back and forth along the length of the mounting plate. When the mounting base slides to one side, the lever mechanism reaches the side of the hanging lugs away from the hydraulic mechanism, and the limiting rollers abut against the side of the hanging lugs facing the hydraulic mechanism. When the mounting base slides to the other side, the lever mechanism can drive the filter plate towards the hydraulic mechanism through the hanging lugs, and the intermittent lifting mechanism is triggered, driving the filter plate to reciprocate up and down.

[0006] The sludge drying treatment equipment based on box-type diaphragm filter press as described above: the lever mechanism includes two crossbars slidably mounted on the upright arm and a transverse block fixedly connected to the two crossbars, and a cylindrical spring is respectively sleeved on the outer periphery of the two crossbars, with the two ends of the cylindrical springs respectively connected to the upright arm and the transverse block.

[0007] As described above, the sludge drying equipment based on box-type diaphragm filter press has the following characteristics: the side of the transverse block away from the hydraulic mechanism has an inclined surface, and the side facing the hydraulic mechanism has a straight surface. When the mounting base moves the transverse block upward toward the hanging ear, the inclined surface contacts the hanging ear and can cause the transverse block to move toward the vertical arm; wherein, the side of the hanging ear away from the hydraulic mechanism is also fixedly provided with a protrusion, and the protrusion is higher than the upper part of the transverse block.

[0008] The sludge drying treatment equipment based on box-type diaphragm filter press as described above: the intermittent lifting mechanism includes a guide arm fixed to the upright arm, a sleeve plate slidably fitted with the guide arm, and a column fixed to the sleeve plate at one end away from the upright arm; wherein, the sleeve plate is connected to the swaying mechanism, and the column cooperates with a limiting plate fixed to the assembly plate.

[0009] The sludge drying treatment equipment based on box-type diaphragm filter press as described above: the limiting plate is provided with a groove that cooperates with the column, and the swaying mechanism can drive the sleeve plate to slide relative to the guide arm so that the column extends into the groove or is pulled out of the groove; the groove includes a plurality of connected zigzag grooves, the zigzag grooves including connected straight sections, inclined sections and vertical sections.

[0010] The sludge drying treatment equipment based on box-type diaphragm filter press as described above: the oscillation mechanism includes a vertical shaft rotatably mounted on the mounting base, two connecting arms fixed on the vertical shaft, and two limiting rollers rotatably mounted on the two connecting arms; wherein, the vertical shaft is connected to a pneumatic component provided on the mounting base, and the pneumatic component is also connected to the sleeve plate, for driving the vertical shaft to rotate and the sleeve plate to slide relative to the guide arm.

[0011] The sludge drying treatment equipment based on box-type diaphragm filter press as described above: two guide rods are fixed on the mounting base, the pneumatic component is slidably connected to the two guide rods, and two cylinders are fixed on the mounting base. The movable end of the cylinder is fixed to the drive frame, and a sliding fit structure is provided between the drive frame and the vertical shaft.

[0012] The sludge drying treatment equipment based on box-type diaphragm filter press as described above: the sliding fit structure includes a kit slidably sleeved on the vertical shaft and a connecting rod connecting the kit and the drive frame, the two ends of the connecting rod being hinged to the kit and the drive frame respectively; wherein, a groove is provided on the outer wall of the vertical shaft, the groove is spirally arranged, and a protrusion adapted to the groove is fixed on the kit, the protrusion extending into the groove and slidably connected to the vertical shaft.

[0013] The sludge drying treatment equipment based on box-type diaphragm filter press as described above: the drive frame is provided with an extension, the sleeve plate is fixed with a transmission plate, the transmission plate passes through the extension and is slidably connected to the extension.

[0014] A sludge drying treatment method employs a sludge drying treatment device based on a box-type diaphragm filter press. After the filter press is completed, the assembly seat moves away from the hydraulic mechanism on the assembly plate, causing the transverse block to reach the side of the hanging ear away from the hydraulic mechanism. The swaying mechanism is activated, driving the limit roller to sway to the side of the hanging ear facing the hydraulic mechanism. The assembly seat moves towards the hydraulic mechanism, and the transverse block drives the filter plate to move towards the hydraulic mechanism through the hanging ear. The intermittent lifting mechanism is triggered, driving the filter plate to reciprocate up and down, causing the filter cake to fall off.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting a transverse block, the present invention utilizes the inclined surface of the side of the transverse block to enable the transverse block to smoothly reach the side of the hanging ear away from the hydraulic mechanism. There are two limiting rollers on the side of the hanging ear facing the hydraulic mechanism. The transverse block uses the flat surface to remove the filter plate. During the removal of the filter plate, the intermittent lifting mechanism can cause the vertical arm to move up intermittently, so that the transverse block can drive the filter plate to lift through the protrusion. Thus, the filter plate can reciprocate up and down vibration during the removal process. The moving filter plate causes the filter cake to be subjected not only to vertical vibration force, but also to horizontal inertial drag. This composite motion forms a dynamic shear force at the interface between the filter cake and the filter cloth, so that the filter cake particles are in a continuous relative sliding state. This effectively prevents the "false loosening" caused by the filter cake moving synchronously with the filter cloth when vibrating in place, and greatly improves the removal effect and efficiency of the filter cake. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of a sludge drying treatment device based on a box-type diaphragm filter press; Figure 2 This is a schematic diagram of another aspect of an embodiment of a sludge drying treatment device based on a box-type diaphragm filter press; Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 for Figure 2 Enlarged view of the structure at point B; Figure 5 This is a schematic diagram of the evacuation structure in one embodiment of a sludge drying treatment device based on a box-type diaphragm filter press. Figure 6 This is a front view of the evacuation structure in one embodiment of a sludge drying treatment device based on a box-type diaphragm filter press; Figure 7 This is a schematic diagram of the assembly base in one embodiment of a sludge drying treatment device based on a box-type diaphragm filter press; Figure 8 This is a schematic diagram of the assembly base from another angle in one embodiment of a sludge drying treatment device based on a box-type diaphragm filter press; Figure 9 An exploded view of the structure of the toggle mechanism and the sway mechanism in one embodiment of a sludge drying treatment device based on a box-type diaphragm filter press; Figure 10 for Figure 9 A structural diagram from another angle.

[0017] In the diagram: 1. Frame; 2. Hydraulic mechanism; 3. Filter plate; 4. Hanging lug; 401. Protrusion; 5. Linear drive module; 6. Movable seat; 7. Assembly plate; 701. Guide rail; 8. Assembly seat; 801. Guide block; 9. Vertical arm; 10. Crossbar; 11. Cylindrical spring; 12. Horizontal block; 1201. Inclined surface; 1202. Flat surface; 13. Vertical shaft; 1301. Groove; 14. Connecting arm; 15. Limiting roller; 16. Guide arm; 17. Sleeve plate; 18. Column; 19. Cylinder; 20. Drive frame; 2001. Extension; 21. Transmission plate; 22. Limiting plate; 2201. Flat section; 2202. Inclined section; 2203. Vertical section; 23. Kit; 2301. Protruding column; 24. Connecting rod; 25. Guide rod. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0020] Please see Figures 1-10In this embodiment, a sludge drying treatment device based on box-type diaphragm filter press includes a frame 1, a hydraulic mechanism 2 located at one end of the frame 1, and multiple filter plates 3 movably mounted on the frame 1. Each filter plate 3 has a hanging lug 4 fixed on both sides, which slidably mounts on the frame 1. A set of retraction structures is provided on each side of the frame 1. The retraction structures include: an assembly plate 7 movably mounted on the side of the frame 1; after filtration, the assembly plate 7 can be driven by a linear drive module 5 located on the side of the frame 1, allowing it to move intermittently along the length of the frame 1; and an assembly seat 8 mounted on the assembly plate 7. A guide rail 701 is fixed on the assembly plate 7, and the assembly seat 8 slidably engages with the guide rail 701. A guide block 801 is fixed on the assembly seat 8. A sliding connection is provided with an upright arm 9, on which a lever mechanism is provided to cooperate with the hanging ear 4; an intermittent lifting mechanism is connected to the upright arm 9 and two limiting rollers 15 are movably provided on the mounting base 8. The two limiting rollers 15 are connected to a swing mechanism provided on the mounting base 8; wherein, the mounting base 8 can be driven by a threaded drive mechanism provided on the mounting plate 7 to slide back and forth along the length direction of the mounting plate 7. When the mounting base 8 slides to one side, the lever mechanism can reach the side of the hanging ear 4 away from the hydraulic mechanism 2, and the limiting rollers 15 abut against the side of the hanging ear 4 facing the hydraulic mechanism 2. When the mounting base 8 slides to the other side, the lever mechanism can drive the filter plate 3 to move towards the hydraulic mechanism 2 through the hanging ear 4, and the intermittent lifting mechanism is triggered, which can drive the filter plate 3 to reciprocate up and down.

[0021] In this embodiment, it should be further noted that the linear drive module 5 and the threaded drive mechanism are both applications of existing technology, both driven by a lead screw and a servo motor to achieve linear drive of the components. Furthermore, the linear drive module 5 is connected to a movable seat 6, which is fixed to the assembly plate 7. Secondly, the hydraulic mechanism 2 is also an application of existing technology. It is used to apply pressure to multiple filter plates 3 during operation. After the filtration is completed, the hydraulic mechanism 2 is removed, and then the multiple filter plates 3 are removed to allow the filter cake to fall off.

[0022] During operation, after the filter press is completed, the filter plate 3 needs to be removed so that the filter cake can fall off. The threaded drive mechanism works, causing the mounting seat 8 to move along the length of the mounting plate 7 to complete the removal of one filter plate 3. Then, the linear drive module 5 drives the movable seat 6 to move a certain distance from the mounting plate 7, that is, the distance between two adjacent hanging ears 4. This cycle continues, and the lever mechanism can cooperate with the hanging ears 4 to remove multiple filter plates 3 one by one.

[0023] As a further embodiment of the present invention, please refer again. Figure 4 , Figure 7 as well as Figure 9The lever mechanism includes two crossbars 10 slidably mounted on the upright arm 9 and a transverse block 12 fixedly connected to the two crossbars 10. A cylindrical spring 11 is fitted around the outer periphery of each of the two crossbars 10, with both ends of the cylindrical spring 11 connected to the upright arm 9 and the transverse block 12, respectively. The transverse block 12 has an inclined surface 1201 on the side away from the hydraulic mechanism 2 and a straight surface 1202 on the side facing the hydraulic mechanism 2. When the mounting base 8 moves the transverse block 12 upward toward the hanging ear 4, the inclined surface 1201 contacts the hanging ear 4, causing the transverse block 12 to move toward the upright arm 9. The hanging ear 4 also has a protrusion 401 fixedly provided on the side away from the hydraulic mechanism 2, and the protrusion 401 is higher than the upper part of the transverse block 12.

[0024] In this embodiment, during operation, the mounting base 8 moves away from the hydraulic mechanism 2 on the mounting plate 7, and the transverse block 12 moves towards the hanging lug 4. Subsequently, the inclined surface 1201 will contact the hanging lug 4, thereby causing the transverse block 12 to move aside. Specifically, the two crossbars 10 guide the transverse block 12, and the transverse block 12 moves towards the vertical arm 9. The cylindrical spring 11 is compressed, and then the end of the transverse block 12 away from the crossbars 10 abuts against the hanging lug 4. Finally, after the transverse block 12 disengages from the hanging lug 4, the cylindrical spring 11 rebounds, causing the transverse block 12 to reach its destination. The hanging ear 4 is positioned away from the hydraulic mechanism 2, with the flat surface 1202 facing the hanging ear 4. Subsequently, the swaying mechanism operates, driving the two limiting rollers 15 to sway to the side of the hanging ear 4 facing the hydraulic mechanism 2. At this point, the lateral block 12 and the limiting rollers 15 are respectively located on both sides of the hanging ear 4. The mounting base 8 moves on the mounting plate 7 towards the hydraulic mechanism 2, and the lateral block 12 can use the flat surface 1202 to push the hanging ear 4, causing the filter plate 3 to move towards the hydraulic mechanism 2, so that the filter plate 3 is removed. During this process, the intermittent lifting mechanism is triggered, driving the vertical arm 9 to move intermittently upward. Correspondingly, the transverse block 12 can lift the filter plate 3 through the protrusion 401, allowing the filter plate 3 to reciprocate during the removal process, thereby promoting the detachment of the filter cake. During this process, the two limiting rollers 15 can effectively limit the filter plate 3 through the hanging ears 4, preventing the filter plate 3 from tipping over. In this regard, the present invention provides a transverse block 12, which, by utilizing the inclined surface 1201 on the side of the transverse block 12, allows the transverse block 12 to smoothly reach the side of the hanging ear 4 away from the hydraulic mechanism 2. Two limiting rollers 15 are located on the side of the hanging ear 4 facing the hydraulic mechanism 2. The transverse block 12 utilizes the flat surface 1202... The filter plate 3 is removed, and during the removal process, the intermittent lifting mechanism causes the vertical arm 9 to move upward intermittently, so that the transverse block 12 can lift the filter plate 3 through the protrusion 401. This allows the filter plate 3 to reciprocate up and down during the removal process. The moving filter plate 3 causes the filter cake to be subjected not only to vertical vibration force, but also to horizontal inertial drag. This composite motion forms a dynamic shear force at the interface between the filter cake and the filter cloth, keeping the filter cake particles in a continuous relative sliding state. This effectively prevents the "false loosening" caused by the filter cake moving synchronously with the filter cloth when vibrating in place, and greatly improves the removal effect and efficiency of the filter cake.

[0025] As a further embodiment of the present invention, please refer again. Figure 6 , Figure 7 as well as Figure 10The intermittent lifting mechanism includes a guide arm 16 fixed to the upright arm 9, a sleeve 17 slidably fitted with the guide arm 16, and a column 18 fixed to the sleeve 17 at one end away from the upright arm 9; the sleeve 17 is connected to the sway mechanism, and the column 18 cooperates with the limiting plate 22 fixed on the assembly plate 7.

[0026] The limiting plate 22 is provided with a groove that cooperates with the column 18, and the swaying mechanism can drive the sleeve 17 to slide relative to the guide arm 16 so that the column 18 extends into the groove or is pulled out of the groove; the groove includes a plurality of connected zigzag grooves, the zigzag grooves including connected straight sections 2201, inclined sections 2202 and vertical sections 2203.

[0027] In this embodiment, during operation, after the transverse block 12 reaches the side of the hanging ear 4 away from the hydraulic mechanism 2, the sway mechanism is triggered, driving the two limiting rollers 15 to sway to the side of the hanging ear 4 facing the hydraulic mechanism 2. Simultaneously, the sleeve 17 is driven to slide away from the vertical arm 9 on the guide arm 16 until the column 18 extends into the straight section 2201. Subsequently, the mounting base 8 moves towards the hydraulic mechanism 2 on the mounting plate 7, and the transverse block 12 can drive the filter plate 3 towards the hydraulic mechanism 2 via the hanging ear 4. After the column 18 enters the inclined section 2202, it will slide with the limiting plate 22, causing the sleeve 17, guide arm 16, and vertical arm 9 to move upward. The vertical arm 9 then moves the horizontal moving block 12 upward via the two crossbars 10. The horizontal moving block 12, in turn, moves the hanging ear 4 and filter plate 3 upward via the protrusion 401. After the column 18 enters the vertical section 2203, the sleeve 17, guide arm 16, vertical arm 9, and horizontal moving block 12 fall, the filter plate 3 moves downward, and the hanging ear 4 falls back onto the frame. The filter plate 3 vibrates repeatedly as it moves towards the hydraulic mechanism 2. This repeated vibration causes the filter cake to be subjected to both vertical vibration and horizontal inertial drag, significantly improving the cake's removal efficiency. It should be noted that the vertical section 2203 is wider than the straight section 2201 and the inclined section 2202 because the filter plate 3 requires a certain amount of time to fall after the column 18 enters the vertical section 2203 from the inclined section 2202. To prevent the column 18 from getting stuck in the vertical section 2203, the width of the vertical section 2203 is designed to be relatively large. Secondly, the straight section 2201 of the limiting plate 22 facing the hydraulic mechanism 2 is longer than the previous design. The purpose is that when the column 18 enters the straight section 2201, the filter plate 3 will no longer rise or fall. Then, the swaying mechanism will work to drive the two limiting rollers 15 to deviate. The limiting rollers 15 will be withdrawn from the side of the hanging ear 4 to avoid the limiting rollers 15 from obstructing the subsequent movement of the mounting seat 8 away from the hydraulic mechanism 2.

[0028] As a further embodiment of the present invention, please refer again. Figure 7 and Figure 8The oscillation mechanism includes a vertical shaft 13 rotatably mounted on the mounting base 8, with two connecting arms 14 fixed on the vertical shaft 13. Two limiting rollers 15 are rotatably mounted on the two connecting arms 14. The vertical shaft 13 is connected to a pneumatic assembly on the mounting base 8, and the pneumatic assembly is also connected to the sleeve plate 17, for driving the vertical shaft 13 to rotate and the sleeve plate 17 to slide relative to the guide arm 16. Two guide rods 25 are fixed on the mounting base 8. The pneumatic assembly is slidably connected to a drive frame 20 and two cylinders 19 fixed on the mounting base 8. The movable end of the cylinder 19 is fixed to the drive frame 20, and a sliding fit structure is provided between the drive frame 20 and the vertical shaft 13.

[0029] The sliding fit structure includes a kit 23 slidably sleeved on the vertical shaft 13 and a connecting rod 24 connecting the kit 23 and the drive frame 20. The two ends of the connecting rod 24 are respectively hinged to the kit 23 and the drive frame 20. The outer wall of the vertical shaft 13 is provided with a groove 1301, which is spirally arranged. The kit 23 is fixed with a protrusion 2301 that is adapted to the groove 1301. The protrusion 2301 extends into the groove 1301 and is slidably connected to the vertical shaft 13.

[0030] In this embodiment, with attachment Figure 8 Taking the illustrated state as an example, when the movable end of the cylinder 19 retracts, it drives the drive frame 20 to slide towards the mounting base 8 on the two guide rods 25. Then, the drive frame 20 pushes the kit 23 to slide upwards on the vertical shaft 13 via the connecting rod 24. Consequently, the protrusion 2301 moves linearly along the axial direction of the vertical shaft 13 and slides with the vertical shaft 13 through the groove 1301, causing the vertical shaft 13 to rotate. The vertical shaft 13 then drives the two limiting rollers 15 to deviate from the side of the hanging lug 4 via the two connecting arms 14 to avoid... To prevent the limiting roller 15 from obstructing the movement of the mounting base 8 away from the hydraulic mechanism 2 after the filter plate 3 has been removed; after the transverse block 12 moves to the side of the hanging ear 4 away from the hydraulic mechanism 2, the movable end of the cylinder 19 extends, and the drive frame 20 pulls the kit 23 downward on the vertical shaft 13 through the connecting rod 24. The vertical shaft 13 can then drive the limiting roller 15 to swing to the side of the hanging ear 4 facing the hydraulic mechanism 2 through the connecting arm 14, in order to limit the hanging ear 4 and prevent the filter plate 3 from tilting during subsequent lifting and lowering.

[0031] As a further embodiment of the present invention, please refer again. Figure 7 The drive frame 20 is provided with an extension 2001, and the sleeve 17 is fixed with a transmission plate 21. The transmission plate 21 passes through the extension 2001 and is slidably connected to the extension 2001.

[0032] In this embodiment, when the filter plate 3 is retracted toward the hydraulic mechanism 2 and undergoes a lifting action, the transmission plate 21 slides relative to the extension 2001. When the movable end of the cylinder 19 retracts, causing the vertical shaft 13 to drive the limiting roller 15 to deviate from the side of the hanging ear 4, the extension 2001 will drive the sleeve 17 to slide toward the vertical arm 9 on the guide arm 16 through the transmission plate 21, thereby allowing the column 18 to be pulled out from the straight section 2201. Thus, when the mounting base 8 moves away from the hydraulic mechanism 2 on the mounting plate 7, the problem of the column 18 being unable to pass through the vertical section 2203 can be avoided.

[0033] A sludge drying treatment method employs a sludge drying treatment device based on a box-type diaphragm filter press. After the filter press is completed, the mounting base 8 moves away from the hydraulic mechanism 2 on the mounting plate 7, causing the transverse block 12 to reach the side of the hanging ear 4 away from the hydraulic mechanism 2. The swaying mechanism is activated, driving the limiting roller 15 to sway to the side of the hanging ear 4 facing the hydraulic mechanism 2. The mounting base 8 moves towards the hydraulic mechanism 2, and the transverse block 12 drives the filter plate 3 to move towards the hydraulic mechanism 2 through the hanging ear 4. The intermittent lifting mechanism is triggered, driving the filter plate 3 to reciprocate up and down, causing the filter cake to fall off.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sludge drying treatment device based on box-type diaphragm filter press, comprising a frame, a hydraulic mechanism disposed at one end of the frame, and multiple filter plates movably disposed on the frame, wherein each filter plate has a hanging lug fixed on both sides, the hanging lugs are slidably disposed on the frame, and each side of the frame is provided with a set of retraction structures; characterized in that, The evacuation structure includes: an assembly plate movably mounted on the side of the frame; after filtration, the assembly plate can be driven by a linear drive module on the side of the frame to move intermittently along the length of the frame; an assembly seat mounted on the assembly plate, with a guide rail fixed on the assembly plate, the assembly seat slidably fitting into the guide rail, and a guide block fixed on the assembly seat; a vertical arm slidably connected to the guide block; a lever mechanism on the vertical arm that engages with the hanging ear; an intermittent lifting mechanism connecting the vertical arm; and two limiting rollers movably mounted on the assembly seat, the two limiting rollers being connected to a swing mechanism mounted on the assembly seat; wherein, the assembly seat can be driven by a threaded drive mechanism mounted on the assembly plate to slide back and forth along the length of the assembly plate; when the assembly seat slides to one side, the lever mechanism can reach the side of the hanging ear away from the hydraulic mechanism, and the limiting rollers abut against the side of the hanging ear facing the hydraulic mechanism; when the assembly seat slides to the other side, the lever mechanism can drive the filter plate to move towards the hydraulic mechanism through the hanging ear, and the intermittent lifting mechanism is triggered, driving the filter plate to move back and forth.

2. The sludge drying treatment equipment based on box-type diaphragm filter press according to claim 1, characterized in that, The lever mechanism includes two horizontal bars slidably mounted on the vertical arm and a horizontal moving block fixedly connected to the two horizontal bars. A cylindrical spring is sleeved on the outer periphery of each of the two horizontal bars, and the two ends of the cylindrical spring are respectively connected to the vertical arm and the horizontal moving block.

3. The sludge drying treatment equipment based on box-type diaphragm filter press according to claim 2, characterized in that, The lateral block has an inclined surface on the side away from the hydraulic mechanism and a flat surface on the side facing the hydraulic mechanism. When the mounting seat moves the lateral block upward toward the hanging ear, the inclined surface contacts the hanging ear and can cause the lateral block to move toward the vertical arm. The hanging ear also has a protrusion fixed on the side away from the hydraulic mechanism, and the protrusion is higher than the upper part of the lateral block.

4. The sludge drying treatment equipment based on box-type diaphragm filter press according to claim 1, characterized in that, The intermittent lifting mechanism includes a guide arm fixed to the upright arm, a sleeve plate slidably fitted with the guide arm, and a column fixed to the sleeve plate at an end away from the upright arm; wherein, the sleeve plate is connected to the sway mechanism, and the column cooperates with a limiting plate fixed to the assembly plate.

5. The sludge drying treatment equipment based on box-type diaphragm filter press according to claim 4, characterized in that, The limiting plate is provided with a groove that mates with the column, and the sway mechanism can drive the sleeve plate to slide relative to the guide arm so that the column extends into or is pulled out of the groove; the groove includes multiple connected zigzag grooves, and the zigzag grooves include connected straight sections, inclined sections and vertical sections.

6. The sludge drying treatment equipment based on box-type diaphragm filter press according to claim 4, characterized in that, The sway mechanism includes a vertical shaft rotatably mounted on the mounting base, two connecting arms fixed on the vertical shaft, and two limiting rollers rotatably mounted on the two connecting arms; wherein, the vertical shaft is connected to a pneumatic assembly provided on the mounting base, and the pneumatic assembly is also connected to the sleeve plate, for driving the vertical shaft to rotate and the sleeve plate to slide relative to the guide arm.

7. A sludge drying treatment device based on a box-type diaphragm filter press according to claim 6, characterized in that, Two guide rods are fixed on the mounting base. The pneumatic assembly is slidably connected to the two guide rods, and two cylinders are fixed on the mounting base. The movable end of the cylinder is fixed to the drive frame. A sliding fit structure is provided between the drive frame and the vertical shaft.

8. The sludge drying treatment equipment based on box-type diaphragm filter press according to claim 7, characterized in that, The sliding fit structure includes a kit slidably sleeved on the vertical shaft and a connecting rod connecting the kit and the drive frame. The two ends of the connecting rod are respectively hinged to the kit and the drive frame. The outer wall of the vertical shaft is provided with a groove, which is spirally arranged. The kit is fixed with a protrusion adapted to the groove, which extends into the groove and is slidably connected to the vertical shaft.

9. A sludge drying treatment device based on a box-type diaphragm filter press according to claim 7, characterized in that, The drive frame is provided with an extension, and a transmission plate is fixed on the sleeve plate. The transmission plate passes through the extension and is slidably connected to the extension.

10. A sludge drying treatment method, employing a sludge drying treatment device based on a box-type diaphragm filter press as described in any one of claims 1-9, characterized in that, After the filter press is completed, the mounting base moves away from the hydraulic mechanism on the mounting plate, causing the transverse block to reach the side of the hanging ear away from the hydraulic mechanism. The swaying mechanism works, driving the limit roller to sway to the side of the hanging ear facing the hydraulic mechanism. The mounting base moves towards the hydraulic mechanism, and the transverse block drives the filter plate to move towards the hydraulic mechanism through the hanging ear. The intermittent lifting mechanism is triggered, driving the filter plate to rise and fall back and forth, causing the filter cake to fall.

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