A sludge filter press with a group opening plate

Abstract

This application discloses a group-opening sludge filter press, relating to the field of sludge and wastewater treatment. It includes a frame and a filter press assembly mounted on the frame. The frame includes side beams, and along the side beams from one end to the other, an end frame, a movable frame, an extrusion end plate, and another end frame are sequentially arranged. The filter press assembly includes several filter press components disposed between the extrusion end plate and the end frame at the other end. A central push plate, dividing the filter press components, is disposed between the extrusion end plate and the end frame at the other end. The extrusion end plate and the end frame at the other end are connected by a connecting chain, and the central push plate and the filter press components are all connected to the connecting chain. A power mechanism A drives the extrusion end plate to slide along the length of the side beams. A power mechanism B drives the movable frame and the central push plate to move along the length of the side beams. This design solves the problems of existing filter presses, achieves group-opening and closing of the plates twice, reduces equipment length and floor space, and improves production efficiency.

Description

Technical Field

[0001] This application relates to the field of sludge and wastewater treatment, and in particular to a grouped plate sludge filter press. Background Technology

[0002] Currently, domestic filter presses generally use a plate-pulling trolley to open and close the filter plates one by one. Due to the excessive number of opening and closing operations, the unloading time is long and the efficiency is low. Furthermore, due to the complexity of the mechanism, the mechanical, electrical, and hydraulic components work together repeatedly during the reciprocating opening and closing process, resulting in frequent malfunctions, high costs, and easy damage to the filter plates, requiring frequent replacement of parts and a large amount of maintenance.

[0003] While one-time plate-opening technology exists both domestically and internationally, such equipment is long, occupies a large area, is difficult to install on-site, and its precision and strength are hard to guarantee. Plate-by-plate filter presses have low automation and efficiency, and complex mechanical structures. One-time plate-opening filter presses are long, occupy a large space, and are limited by manufacturing precision and raw material length, making it impossible to manufacture too many chambers. Summary of the Invention

[0004] To address the problems of existing filter presses, this application provides a group-opening sludge filter press that reduces the overall length of the equipment compared to one-time plate opening, thereby reducing equipment length and floor space and improving production efficiency.

[0005] The technical solution of the grouped plate sludge filter press provided in this application is as follows.

[0006] A group-opening sludge filter press includes a frame and a filter press device mounted on the frame. The frame includes a side beam, and an end frame, a movable frame, an extrusion end plate, and another end frame are sequentially arranged along the first end to the last end of the side beam. The filter press device includes a plurality of filter press components disposed between the extrusion end plate and the end frame at the last end, and a central push plate is provided between the extrusion end plate and the end frame at the last end to divide the plurality of filter press components.

[0007] The extrusion end plate and the end frame at the tail end are connected by a connecting chain, and the middle push plate and several filter press components are all connected to the connecting chain.

[0008] The mobile frame is equipped with a power mechanism A, which is used to drive the extrusion end plate to slide along the length of the side beam.

[0009] The frame is equipped with a power mechanism B, which is used to drive the moving frame and the middle push plate to move along the length of the side beam.

[0010] By adopting the above technical solution, the middle push plate divides several filter press components into two groups. The power mechanism A drives the extrusion end plate to slide along the length of the side beam, thereby enabling the filter press components to be squeezed together. The power mechanism B drives the moving frame and the middle push plate to slide along the length of the side beam. When the moving frame slides towards the end frame at the beginning, the connecting chain enables the opening of a group of filter press components near the end frame at the beginning. When the middle push plate slides towards the end frame at the beginning, the connecting chain enables the opening of a group of filter press components near the end frame at the end, thus realizing the grouping and opening of the filter press components. The group-opening design allows for opening plates without simultaneous opening, reducing the required length for each plate and thus shortening the overall frame length. This allows for the installation of more filter press components within the limited length, enabling the simultaneous filtration of more sludge. Consequently, while maintaining sludge processing capacity, the overall length of the equipment is reduced, the floor space required is minimized, and transportation is also facilitated.

[0011] Optionally, the filter press assembly includes a plate and frame, which is connected to a connecting chain. A filter plate is disposed on the plate and frame, which is slidably disposed on the side beam along the length direction of the side beam. A filter cloth is disposed on one side of the filter plate.

[0012] By adopting the above technical solution, the plate and frame are slidably set on the side beam. Under the push of the extrusion end plate, the plate and frame in several filter press components can slide, so that the filter plates are squeezed against each other, and the water squeezed out of the sludge seeps out through the filter cloth, thereby realizing filter press.

[0013] Optionally, the filter press further includes a filter cloth driving assembly, which is used to drive the filter cloth to move and be set.

[0014] The filter cloth drive assembly includes filter cloth drive shafts located at the top and bottom of the plate frame. Filter cloth drive sprockets are located near both ends of the filter cloth drive shafts. The filter cloth is connected end-to-end to two filter cloth drive chains. The two filter cloth drive chains cooperate with the two filter cloth drive sprockets. Power mechanisms C are located on both the first and last end frames. The power mechanism C on the first end frame drives the filter cloth drive shaft between the extrusion end plate and the last end frame to rotate. The power mechanism C on the last end frame drives the filter cloth drive shaft between the middle push plate and the last end frame to rotate.

[0015] By adopting the above technical solution, and through the setting of the filter cloth drive assembly, the filter cloth drive shaft is rotated under the drive of the power mechanism C, thereby driving the filter cloth to move, which is conducive to the rapid falling off of the filter cake or residue formed after filter pressing.

[0016] Optionally, the power mechanism C includes a motor reducer mounted on the end frame. The output shaft of the motor reducer is connected to the input shaft of the commutator via a coupling. The output shaft of the commutator is connected to a splined shaft via a universal joint. A filter cloth gearbox is mounted on the plate frame. The filter cloth gearbox contains a filter cloth driving gear and a filter cloth driven gear that mesh with each other. The splined shaft is splinedly engaged with the filter cloth driving gear. The filter cloth driven gear is coaxially fixed with the filter cloth transmission shaft. The end of the splined shaft is supported on a side beam.

[0017] By adopting the above technical solution, a motor reducer drives the spline shaft to rotate, and finally, through the transmission of the filter cloth gearbox, the filter cloth drive shaft rotates, thus realizing the control of the filter cloth.

[0018] Optionally, the filter cloth gearbox further includes a gearbox body, wherein the filter cloth driving gear and the filter cloth driven gear are both helical gears, and the axial directions of the filter cloth driving gear and the filter cloth driven gear are distributed at a 90-degree angle. The filter cloth driving gear is mounted in the gearbox body through a spherical bearing.

[0019] By adopting the above technical solution, the cooperation between the filter cloth drive gear and the filter cloth driven gear realizes the change of transmission route direction. The filter cloth drive gear is set in the gearbox through a spherical bearing. The setting of the spherical bearing allows the filter cloth drive gear to have a certain floating range, which allows the filter pressing assembly to have a certain degree of shaking. Moreover, the mechanical part has a certain error, which is equivalent to having a certain degree of flexibility compensation, realizing force release and preventing jamming during transmission.

[0020] Optionally, the filter cloth drive assembly further includes a detection module, which includes a detection shaft, an encoder, and a rotary limit switch. The output shaft of the motor reducer drives the detection shaft to rotate via a chain drive. The two ends of the detection shaft are connected to the encoder rotating shaft and the rotary limit switch rotating shaft respectively via couplings. The encoder is used to detect the position of the filter cloth by detecting the rotation of the detection shaft and upload the position information to the host computer to realize real-time detection of the filter cloth position. The rotary limit switch is used to control the upper and lower limits of the filter cloth travel by controlling the rotation travel of the detection shaft.

[0021] By adopting the above technical solution and setting the detection module, the encoder and rotary limit switch are also driven to rotate during the process of the motor reducer driving the filter cloth to move. The encoder can calculate the position of the filter cloth to realize the detection of the filter cloth position. The rotary limit switch is a limit switch that controls the upper and lower limit travel positions of the filter cloth and also has a limit protection function to prevent the filter cloth from moving excessively.

[0022] Optionally, the filter press further includes a filter cloth cleaning assembly for cleaning the filter cloth; the filter cloth cleaning assembly includes a cleaning nozzle disposed at the bottom of the plate frame, the cleaning nozzle having a plurality of nozzles disposed on the side facing the filter cloth, and the cleaning nozzle being connected to a cleaning main pipe disposed on the side beam via a cleaning hose.

[0023] By adopting the above technical solution and setting up the filter cloth cleaning component, each filter cloth can be cleaned by water spraying through the nozzle on the cleaning spray pipe, ensuring that the sludge is discharged cleanly.

[0024] Optionally, the power mechanism A includes a hydraulic cylinder, and the two sides of the mobile frame are supported on the side beam by support wheels. The wheel surface of one support wheel is a flat surface, and the wheel surface of the other support wheel is a V-shaped surface.

[0025] By adopting the above technical solution, the hydraulic cylinder generates a large thrust, which can exert greater pressure on the sludge and achieve a better filtration effect. With the setting of support wheels, the mobile frame can be slidably set on the side beam. The support wheel surface is flat, which provides better support. The support wheel surface is V-shaped, which cooperates with the side beam to have a certain limiting and guiding function.

[0026] Optionally, the power mechanism B includes a hydraulic cylinder, which includes a front end hydraulic cylinder and a rear end hydraulic cylinder. The two ends of the front end hydraulic cylinder are respectively connected to the moving frame and the middle push plate, and the two ends of the rear end hydraulic cylinder are respectively connected to the middle push plate and the rear end frame.

[0027] A roller assembly is installed on the side beam. The roller assembly supports the hydraulic cylinder from the bottom. The roller assembly includes a roller, a lever, a disc spring cylinder, disc springs, an adjusting rod, and a roller housing. The roller is located at one end of the lever and supports the hydraulic cylinder. The lever is hinged to the roller housing. The other end of the lever is hinged to a disc spring cylinder hinge seat. A disc spring cylinder is provided at the other end of the disc spring cylinder hinge seat. An adjusting rod hole is opened at the other end of the disc spring cylinder. One end of the adjusting rod passes through the adjusting rod hole and is inserted into the disc spring cylinder. Several disc springs are provided on the adjusting rod inserted into the disc spring cylinder. One end of the several disc springs abuts against the abutting part of one end of the adjusting rod. The other end of the several disc springs abuts against the other end of the disc spring cylinder. The other end of the adjusting rod passes through an adjusting seat on the roller housing, and an adjusting nut is threaded onto the other end of the adjusting rod.

[0028] By adopting the above technical solution, the distance between the moving frame and the middle push plate can be controlled independently through the setting of the first and last end cylinders, as well as the distance between the middle push plate and the last end frame. This allows for the grouped opening control of several filter press components. Since the cylinder bends downwards under gravity, the bottom roller supports it during this bending. As the roller sinks, the lever mechanism compresses the disc spring. The disc spring, with its compressibility, provides spring force to support the cylinder. Furthermore, the nut allows for pre-tightening adjustment of the disc spring, thus adjusting the supporting force and ensuring the cylinder's support. This prevents severe cylinder bending, which could damage components or even cause safety accidents.

[0029] Optionally, the mobile frame is provided with a locking device, which includes a locking stop block, a locking cylinder, an opening locking plate, and a closing locking plate;

[0030] The locking stop block is mounted on the side beam;

[0031] The opening plate locking plate is hinged to one end of the moving frame near the extrusion end plate, and the closing plate locking plate is hinged to one end of the moving frame away from the extrusion end plate. The hinge shafts of the opening plate locking plate and the closing plate locking plate are coaxially fixed. The locking cylinder is mounted on the moving frame and drives the opening plate locking plate and the closing plate locking plate to swing.

[0032] When the plates are closed, the locking cylinder drives the closing plate locking plate to swing, which abuts against the rear end of the locking stop block; when the plates are opened, the locking cylinder drives the opening plate locking plate to swing, which abuts against the rear end of the locking stop block.

[0033] By adopting the above technical solution and setting the locking device, the moving frame can be locked when opening or closing the plate to prevent the moving frame from moving. For example, when opening the plate, that is, when several filter press components are separated from each other, the open state can be maintained. When closing the plate, after the first closing is completed, the position of the moving frame is maintained, so that the stroke of the plate closing is shorter during the second closing. When the power mechanism B performs the second closing, the thrust stroke is short, which helps to reduce the overall forming length during the closing.

[0034] In summary, this application includes at least the following beneficial effects:

[0035] 1. This application divides several filter press components into two groups by setting a middle push plate. By setting a power mechanism A, the extrusion end plate can be driven to slide along the length of the side beam, thereby realizing the mutual extrusion and closing of several filter press components. By setting a power mechanism B, the moving frame and the middle push plate can be driven to slide along the length of the side beam. When the moving frame is driven to slide towards the end frame at the beginning, in conjunction with the connecting chain, a group of several filter press components near the end frame at the beginning will open. When the middle push plate is driven to slide towards the end frame at the beginning, in conjunction with the connecting chain, a group of several filter press components near the end frame at the end will open, thereby realizing the grouping and opening of filter press components. The group-opening design allows for opening plates without simultaneous opening, reducing the required length for each plate and thus shortening the overall frame length. This allows for the installation of more filter press components within the limited length, enabling the simultaneous filtration of more sludge. Consequently, while maintaining sludge processing capacity, the overall length and floor space of the equipment are reduced, facilitating the transportation of the entire unit.

[0036] 2. The cooperation between the filter cloth drive gear and the filter cloth driven gear in this application realizes the change of transmission route direction. The filter cloth drive gear is set in the gearbox through a spherical bearing. The setting of the spherical bearing allows the filter cloth drive gear to have a certain floating range, which allows the filter pressing assembly to have a certain degree of shaking. Moreover, the mechanical error has a certain degree of flexibility compensation, which realizes the release of force and prevents jamming during transmission.

[0037] 3. This application, through the setting of the detection module, drives the encoder and rotary limit switch to rotate during the process of the motor reducer driving the filter cloth to move. The encoder can calculate the position of the filter cloth to realize the detection of the filter cloth position. The rotary limit switch is a limit switch that controls the upper and lower limit travel positions of the filter cloth and also has a limit protection function to prevent the filter cloth from moving excessively.

[0038] 4. The idler roller assembly in this application can support the hydraulic cylinder from the bottom. Since the hydraulic cylinder will bend downward under the action of gravity, the idler roller at the bottom can support the hydraulic cylinder when it bends downward. When the idler roller sinks, the disc spring is squeezed by the lever setting and the lever principle is used. The disc spring has a certain compressibility and can provide spring force to support the hydraulic cylinder. Furthermore, the disc spring can be pre-tightened by the nut setting, thereby adjusting the magnitude of the support force, ensuring the support of the hydraulic cylinder, and preventing the hydraulic cylinder from bending severely, damaging components, or even causing safety accidents.

[0039] 5. This application, through the setting of a locking device, can lock the moving frame when opening or closing the plate, preventing the moving frame from moving. For example, when opening the plate, that is, when several filter press components are separated from each other, the open state can be maintained. When closing the plate, after the first closing is completed, the position of the moving frame is maintained, so that the stroke of the plate closing is shorter during the second closing. When the power mechanism B performs the second closing, the thrust stroke provided by the thrust is short, which helps to reduce the overall forming length during the closing. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of a group-opening sludge filter press.

[0042] Figure 2 yes Figure 1 A magnified schematic diagram of part A in the middle.

[0043] Figure 3 This is a schematic diagram of a grouped open-plate sludge filter press from another perspective (with some filter press components removed).

[0044] Figure 4 This is a top view schematic diagram of a grouped open-plate sludge filter press.

[0045] Figure 5 This is a schematic diagram of the main structure of a grouped open-plate sludge filter press.

[0046] Figure 6 This is a schematic diagram of the left-side structure of a group-opening sludge filter press.

[0047] Figure 7 It is an idler roller assembly.

[0048] Figure 8 yes Figure 7 A schematic diagram of the cross-sectional structure along section line AA.

[0049] Figure 9 This is a schematic diagram of the power mechanism C.

[0050] Figure 10 This is a schematic diagram of the power mechanism C from another perspective.

[0051] Figure 11 This is another structural schematic diagram of the power mechanism C from a different perspective.

[0052] Figure 12 This is a cross-sectional structural diagram of the filter cloth gearbox.

[0053] Figure 13 This is a schematic diagram of a mobile rack structure.

[0054] Figure 14 This is a schematic diagram of the mobile rack structure from another perspective.

[0055] Explanation of reference numerals in the attached drawings: 1. Frame; 101. Side beam; 102. End frame; 103. Moving frame; 104. Extrusion end plate; 105. Middle push plate; 106. Support wheel; 107. Hydraulic cylinder; 2. Filter press assembly; 201. Plate and frame; 202. Filter cloth; 203. Connecting chain; 204. First end cylinder; 205. Tail end cylinder; 206. Cylinder hinge lug; 207. Idler roller assembly; 2071. Idler roller; 2072. Lever; 2073. Disc spring cylinder; 2074. Disc spring; 2075. Adjusting rod; 2076. Adjusting seat; 2077. Idler roller shell; 2078. Disc spring cylinder hinge seat; 2079. Adjusting nut; 3. Filter cloth drive assembly; 301. Plate and frame connecting plate; 302. Filter cloth drive shaft; 303. Filter cloth drive sprocket; 304. Filter cloth drive chain; 305. Power mechanism C; 3051. Motor reducer; 3052. Reversing gear; 3053. Splined shaft; 3054. Splined shaft bracket; 3055. Gearbox body; 3056. Filter cloth drive gear; 3057. Filter cloth driven gear; 3058. Spherical bearing; 306. Detection module; 3061. Detection shaft; 3062. Encoder; 3063. Rotary limit switch; 3064. Spring coupling; 4. Filter cloth cleaning assembly; 401. Cleaning nozzle; 402. Cleaning hose; 403. Cleaning main pipe; 5. Locking device; 501. Locking stop block; 502. Locking cylinder; 503. Opening plate locking plate; 504. Closing plate locking plate. Detailed Implementation

[0056] 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.

[0057] The following is in conjunction with the appendix Figures 1 to 14 This application will be described in further detail.

[0058] This application discloses a grouped plate sludge filter press.

[0059] Reference Figures 1 to 14A group-opening sludge filter press includes a frame 1 and a filter press device disposed on the frame 1.

[0060] The frame 1 includes side beams 101 on both sides. An end frame 102 is fixedly installed at the beginning and end of the side beams 101. A movable frame 103, an extrusion end plate 104, and a middle push plate 105 are sequentially arranged from the beginning to the end of the side beams 101. The movable frame 103, the extrusion end plate 104, and the middle push plate 105 are located between the two side beams 101 and can be moved along the length of the side beams 101.

[0061] The mobile frame 103 is equipped with support wheels 106 on both sides, which support the side beam 101. This rolling contact reduces friction. One support wheel 106 has a flat surface, while the other has a V-shaped surface. The support wheels 106 allow the mobile frame 103 to slide on the side beam 101. The flat surface of one support wheel provides better support, while the V-shaped surface of the other provides a certain degree of limiting and guiding function when it engages with the side beam 101. The mobile frame 103 is equipped with an integrated hydraulic system, including a hydraulic control valve group, to control the hydraulic actuators on this group of open-plate sludge filter presses.

[0062] The two sides of the extrusion end plate 104 are slidably engaged with the side beam 101. A power mechanism A is provided on the movable frame 103. The power mechanism A includes a hydraulic cylinder 107. The power mechanism A is used to drive the extrusion end plate 104 to slide along the length of the side beam 101. The hydraulic cylinder 107 generates a large thrust, which can generate a greater extrusion force on the sludge. Moreover, the extrusion force is stable, resulting in a better filtration effect.

[0063] The two sides of the central push plate 105 are in sliding fit with the side beam 101.

[0064] The filter press device includes a filter press assembly 2.

[0065] Several filter press components 2 are provided, which are located between the extrusion end plate 104 and the end frame 102 at the tail end, and are divided into two sets of filter press components 2 at the beginning and end by the middle push plate 105.

[0066] The filter press assembly 2 includes a plate frame 201, on which filter plates are disposed. The plate frame 201 is slidably disposed on the side beam 101 along its length. Filter cloth 202 is disposed on one side of each filter plate. The plate frame 201 is slidably disposed on the side beam 101. Under the pushing action of the pressing end plate 104, the plate frames 201 in the filter press assembly 2 can slide, causing the filter plates to press against each other. Water squeezed out of the sludge seeps through the filter cloth 202, thereby achieving filter pressing.

[0067] The extrusion end plate 104 is connected to the end frame 102 at the tail end via a connecting chain 203. The connecting chain 203 can be a steel chain, and the middle push plate 105 and several filter press components 2 are all connected to the connecting chain 203.

[0068] A power mechanism B is provided on the frame 1. The power mechanism B is used to drive the movable frame 103 and the middle push plate 105 to move along the length of the side beam 101. The power mechanism B includes hydraulic cylinders, including a front hydraulic cylinder 204 and a rear hydraulic cylinder 205. Hydraulic cylinder hinge ears 206 are protruding on both sides of the movable frame 103, the middle push plate 105 and the rear end frame 102. The two ends of the front hydraulic cylinder 204 are hinged to the hydraulic cylinder hinge ears 206 on the movable frame 103 and the middle push plate 105 respectively. The two ends of the rear hydraulic cylinder 205 are hinged to the hydraulic cylinder hinge ears 206 on the middle push plate 105 and the rear end frame 102 respectively. By setting the first-end hydraulic cylinder 204 and the last-end hydraulic cylinder 205, the distance between the moving frame 103 and the middle push plate 105 can be controlled independently, and then the connecting chain 203 can be used to pull a group of filter press components 2 at the first end to separate from each other. Alternatively, the distance between the middle push plate 105 and the end frame 102 at the last end can be controlled independently, and then the connecting chain 203 can be used to pull a group of filter press components 2 at the last end to separate from each other. Thus, the group opening control of two groups of filter press components 2 can be realized.

[0069] A displacement sensor is installed on the hydraulic cylinder to control the two hydraulic cylinders on both sides to operate synchronously and ensure that the opening and closing plates are stable.

[0070] In actual use, due to the long stroke and small diameter of the hydraulic cylinder, it will bend under the action of gravity, especially when the cylinder is in the extended state, the bending angle is large and very obvious. In order to overcome the bending of the hydraulic cylinder and prevent the bending angle from being too large, the grouped plate sludge filter press of this application is also equipped with a roller assembly 207.

[0071] Each hydraulic cylinder is equipped with a roller assembly 207 at its bottom. The roller assembly 207 supports the hydraulic cylinder from the bottom. The roller assembly 207 includes a roller 2071, a lever 2072, a disc spring sleeve 2073, a disc spring 2074, an adjusting rod 2075, an adjusting seat 2076, and a roller shell 2077. The roller 2071 is rotatably mounted on one end of the lever 2072. The roller surface of the roller 2071 is made of soft rubber to avoid wear on the hydraulic cylinder and to support it. The lever 2072 is hinged to the roller shell 2077. The other end of the lever 2072 is hinged to the disc spring sleeve hinge seat 2078. The other end of the disc spring sleeve hinge seat 2078 is equipped with a disc spring sleeve 2073. The other end of the disc spring sleeve 2073 has an adjusting rod hole, through which one end of the adjusting rod 2075 passes. The rod is inserted into the disc spring cylinder 2073 after the rod hole, and the adjusting rod 2075 inserted into the disc spring cylinder 2073 is provided with several disc springs 2074. One end of the several disc springs 2074 abuts against the abutting part of one end of the adjusting rod 2075, and the other end of the several disc springs 2074 abuts against the other end of the disc spring cylinder 2073. The other end of the adjusting rod 2075 passes through the adjusting seat 2076 on the idler roller shell 2077, and the other end of the adjusting rod 2075 is threaded with an adjusting nut 2079. Because the hydraulic cylinder bends downwards under gravity, the bottom roller 2071 supports it as it bends. As the roller 2071 sinks, lever 2072 compresses the disc spring 2074. The disc spring 2074, being compressible, provides spring force to support the hydraulic cylinder. Rotating the nut causes the adjusting rod 2075 to move axially, compressing or loosening the disc spring 2074. This adjusts the preload of the disc spring 2074, thereby changing the preload and adjusting the supporting force. This ensures the hydraulic cylinder is supported and prevents severe bending, which could damage components or even cause a safety accident.

[0072] The filter press also includes a filter cloth drive assembly 3, which is used to move the filter cloth 202.

[0073] The filter cloth drive assembly 3 includes a plate and frame connecting plate 301, a filter cloth drive shaft 302, and a power mechanism C305. The plate and frame connecting plate 301 is fixed to the top and bottom sides of the plate and frame 201 by bolts. The filter cloth drive shaft 302 is provided between the two plate and frame connecting plates 301 at the top and bottom. The two ends of the filter cloth drive shaft 302 are rotatably mounted on the two plate and frame connecting plates 301 on both sides. The filter cloth drive shaft 302 is provided with filter cloth drive sprockets 303 near both ends. The filter cloth 202 is connected end to end with two filter cloth drive chains 304. The two filter cloth drive chains 304 cooperate with the two filter cloth drive sprockets 303.

[0074] Both the first and last end frames 102 are equipped with power mechanisms C305. The power mechanism C305 on the first end frame 102 drives the filter cloth drive shaft 302 between the extrusion end plate 104 and the last end frame 102 to rotate. The power mechanism C305 on the last end frame 102 drives the filter cloth drive shaft 302 between the middle push plate 105 and the last end frame 102 to rotate. Through the filter cloth drive assembly 3, the rotation of the filter cloth drive shaft 302 is achieved under the drive of the power mechanism C305, thereby driving the filter cloth 202 to move, which is beneficial for the rapid falling off of the filter cake or residue formed after filtration.

[0075] The power mechanism C305 includes a motor reducer 3051, a commutator 3052, a splined shaft 3053, a filter cloth gearbox, and a splined shaft support 3054. The motor reducer 3051 is mounted on the end frame 102. The motor reducer 3051 is a dual-output shaft type with two sides. The output shafts on both sides of the motor reducer 3051 are connected to the input shaft of the L-type right-angle commutator 3052 via couplings. The output shaft of the L-type right-angle commutator 3052 is connected to the splined shaft 3053 via a universal joint. The splined shaft 3053 is arranged along the length of the side beam 101. A filter cloth gearbox is mounted on one side of the plate frame connecting plate 301 at the top of the plate frame 201, and the filter cloth gearboxes on two adjacent plate frames 201 are not on the same side. The filter cloth gearbox contains a meshing filter cloth driving gear 3056 and a filter cloth driven gear 3057. A splined shaft 3053 is splinedly engaged with the filter cloth driving gear 3056. The filter cloth driven gear 3057 is coaxially and fixedly mounted with the filter cloth drive shaft 302. The end of the splined shaft 3053 is rotatably supported on a splined shaft bracket 3054, which is fixedly mounted on the side beam 101. A motor reducer 3051 drives the splined shaft 3053 to rotate, which in turn drives the filter cloth drive shaft 302 through the filter cloth gearbox, thus controlling the filter cloth 202.

[0076] The filter cloth gearbox also includes a gearbox body 3055. Both the filter cloth driving gear 3056 and the filter cloth driven gear 3057 are helical gears, and their axial directions are distributed at a 90-degree angle. The filter cloth driving gear 3056 is mounted within the gearbox body 3055 via a spherical bearing 3058. The engagement of the filter cloth driving gear 3056 and the filter cloth driven gear 3057 changes the direction of the transmission path. The spherical bearing 3058 allows the filter cloth driving gear 3056 to have a certain floating range, thus allowing for a certain degree of sway in the filter press assembly 2. Furthermore, the mechanical error is compensated for by a certain degree of flexibility, achieving force release and preventing jamming during transmission.

[0077] The filter cloth drive assembly 3 also includes a detection module 306, which includes a detection shaft 3061, an encoder 3062, and a rotary limit switch 3063. The detection shaft 3061 is rotatably mounted on a detection seat, which is fixed on the end frame 102. The output shaft of the motor reducer 3051 drives the detection shaft 3061 to rotate via a chain drive. The two ends of the detection shaft 3061 are connected to the rotating shafts of the encoder 3062 and the rotary limit switch 3063 respectively via spring couplings 3064. The encoder 3062 is used to detect the position of the filter cloth 202 by detecting the rotation of the detection shaft 3061 and upload the position information to the host computer to realize real-time detection of the position of the filter cloth 202. The rotary limit switch 3063 is used to control the upper and lower limits of the travel of the filter cloth 202 by controlling the rotation travel of the detection shaft 3061. By setting the detection module 306, during the process of the motor reducer 3051 driving the filter cloth 202 to move, the encoder 3062 and the rotary limit switch 3063 are also driven to rotate. The encoder 3062 is set to calculate the position of the filter cloth 202, thereby realizing the detection of the position of the filter cloth 202. The rotary limit switch 3063 is a limit switch that controls the upper and lower limit travel positions of the filter cloth 202 and also has a limit protection function to prevent the filter cloth 202 from moving excessively.

[0078] The filter press device also includes a filter cloth cleaning assembly 4, which is used to clean the filter cloth 202. The filter cloth cleaning assembly 4 includes a cleaning nozzle 401 located at the bottom of the plate frame 201. The cleaning nozzle 401 has several nozzles on the side facing the filter cloth 202. The cleaning nozzle 401 is connected to the cleaning main pipe 403 via a cleaning hose 402. The cleaning main pipe 403 is fixed to the side beam 101. With the filter cloth cleaning assembly 4, an external water source is connected to the cleaning main pipe 403. The filter cloth 202 in each filter press assembly 2 can be cleaned by spraying water through the nozzles on the corresponding cleaning nozzle 401, ensuring clean sludge discharge.

[0079] The mobile frame 103 is equipped with a locking device 5, which includes a locking stop block 501, a locking cylinder 502, an opening locking plate 503, and a closing locking plate 504.

[0080] There are two locking stop blocks 501, which are fixedly installed on the inner side of the two side beams 101 respectively. The top end of the opening plate locking plate 503 is hinged to the end of the moving frame 103 near the extrusion end plate 104. There are two opening plate locking plates 503 symmetrically distributed on the moving frame 103. The top end of the closing plate locking plate 504 is hinged to the end of the moving frame 103 away from the extrusion end plate 104. There are two closing plate locking plates 504 symmetrically distributed on the moving frame 103. The hinge shafts of the opening plate locking plate 503 and the closing plate locking plate 504 are coaxially fixed. The top end of the locking cylinder 502 is hinged to the end of the moving frame 103 away from the extrusion end plate 104. There are two locking cylinders 502 symmetrically distributed on the moving frame 103. The two locking cylinders 502 simultaneously drive the two closing plate locking plates 504 to swing, and also drive the two opening plate locking plates 503 to swing.

[0081] When the movable frame 103 moves to a position away from the first end of the frame 1, the locking cylinder 502 drives the closing plate locking plate 504 to swing, abutting against the rear end of the locking stop block 501; when the movable frame 103 moves to a position close to the first end of the frame 102, the locking cylinder 502 drives the opening plate locking plate 503 to swing, abutting against the front end of the locking stop block 501. Through the locking device 5, the movable frame 103 can be locked during opening or closing of the plate, preventing movement. For example, during opening, i.e., when several filter press components 2 are separated, the open state can be maintained; during closing, after the first closing is completed, the position of the movable frame 103 is maintained, resulting in a shorter closing stroke during the second closing. The short thrust stroke of the power mechanism B during the second closing helps reduce the overall forming length during closing.

[0082] This application divides several filter press components 2 into two groups by setting a central push plate 105. By setting a power mechanism A, the extrusion end plate 104 can be driven to slide along the length direction of the side beam 101, thereby realizing the mutual extrusion and closing of several filter press components 2. By setting a power mechanism B, the moving frame 103 and the central push plate 105 can be driven to slide along the length direction of the side beam 101. When the moving frame 103 is driven to slide towards the first end frame 102, in conjunction with the setting of the connecting chain 203, a group of several filter press components 2 near the first end frame 102 can be opened. When the central push plate 105 is driven to slide towards the first end frame 102, in conjunction with the setting of the connecting chain 203, a group of several filter press components 2 near the last end frame 102 can be opened, thereby realizing the grouping and opening of the filter press components 2. The design of group-opening plates allows for opening plates without simultaneous opening, reducing the required length for each plate. This results in a shorter overall length for the frame 1 and allows for the installation of more filter press components 2 within the limited length. This enables the simultaneous filtration of more sludge, thus ensuring sufficient sludge processing capacity while reducing the overall length and floor space required for the equipment, and facilitating transportation.

[0083] The operating principle of this application is as follows:

[0084] Plate closing operation: The first-end cylinder 204 retracts, driving the moving frame 103 to move towards the middle push plate 105, which in turn squeezes the end plate 104 and pushes the first set of filter press components 2 towards the middle push plate 105 to close the plate. After the first set of filter press components 2 closes, the tail-end cylinder 205 retracts, pulling the middle push plate 105 towards the tail-end end frame 102, which in turn pushes the tail-end set of filter press components 2 towards the tail-end end frame 102 to close the plate. Both the first and tail sets of filter press components 2 close the plate, realizing one-time plate closing. At the same time as the tail-end cylinder 205 retracts, it also pulls the moving frame 103, the squeeze end plate 104, and the first set of filter press components 2 to move towards the tail-end end frame 102. After the first batch of plates is assembled, the moving frame 103 moves to a position away from the first end of the frame 1. The locking device 5 on the moving frame 103 is activated, and the locking cylinder 502 extends, pushing the plate locking plate 504 to abut against the rear end of the locking stop block 501, thus locking the plates. After the plates are locked, the power mechanism A, i.e., the hydraulic cylinder 107, pushes the extrusion end plate 104 to move towards the end frame 102 near the tail end, thus achieving a second plate assembly. The hydraulic cylinder 107 generates a large thrust, and after the pressure meets the sealing conditions of the filter plates, the hydraulic system maintains the pressure until dewatering is complete.

[0085] Opening Operation: After dehydration, the power mechanism A, i.e., hydraulic cylinder 107, retracts, pulling the extrusion end plate 104 towards the end frame 102 near the beginning. This releases the extrusion pressure between the filter press components 2, achieving the first opening of the plates. The locking cylinder 502 on the moving frame 103 retracts, pulling the plate locking plate 504 away from the rear end of the locking stop block 501, thus unlocking the locking device 5. The tail-end cylinder 205 extends, pushing the middle push plate 105 towards the end frame 102 at the beginning. The middle push plate 105 and the connecting chain 203 pull the set of filter press components 2 at the tail end apart, i.e., the filter plates open completely, achieving the second opening of the set of filter press components 2 at the tail end. As the middle push plate 105 moves toward the end frame 102 at the beginning, a set of filter press components 2, the moving frame 103, and the extrusion end plate 104 at the beginning also move simultaneously. After the set of filter press components 2 at the end opens, the locking cylinder 502 on the moving frame 103 extends, pushing the closing plate locking plate 504 to swing. At the same time, the opening plate locking plate 503 swings, and the opening plate locking plate 503 abuts against the rear end of the locking stop block 501. The locking device 5 realizes the opening plate locking. The opening plate locking can limit the distance that the moving frame 103 moves toward the end frame 102 at the beginning, preventing the moving frame 103 from moving excessively or even abutting against the end frame 102 at the beginning, thus damaging the equipment. The power mechanism C305 on the end frame 102 at the tail end operates, driving the filter cloth drive shaft 302 between the middle push plate 105 and the end frame 102 at the tail end to rotate. This causes the filter cloth 202 to move up and down, completing the unloading of sludge from a set of filter plates at the tail end. The sludge cake is then conveyed by the bottom conveyor. The filter cloth 202 moves up and down again to clean itself, completing the secondary opening of the set of filter press components 2 at the tail end. After the set of filter press components 2 at the tail end completes the unloading of sludge, the first-end cylinder 204 extends, increasing the distance between the moving frame 103 and the middle push plate 105. This increases the distance between the extrusion end plate 104 and the middle push plate 105, causing the set of filter press components 2 at the first end to separate, i.e., the filter plates open, thus achieving the secondary opening of the set of filter press components 2 at the first end. After the plates are opened, the power mechanism C305 on the end frame 102 at the first end operates, driving the filter cloth drive shaft 302 between the middle push plate 105 and the end frame 102 at the first end to rotate. This causes the filter cloth 202 to move up and down, completing the unloading of sludge from one set of filter plates at the first end. The sludge cake is then transported by the bottom conveyor. The filter cloth 202 moves up and down again to clean itself, completing the second opening of the first set of filter press components 2. In summary, the second grouping and opening of the plates is completed.

[0086] In the description of this invention, it should be understood that the terms "head end," "tail end," "both sides," "one end," "the other end," "one side," "the other side," "both ends," "bottom," "top," "inner side," and "top," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, unless otherwise specified and limited, it should be noted that the term "connection" should be interpreted broadly. For example, it can refer to a mechanical connection or an electrical connection, or the internal connection of two elements. It can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0087] The above are merely preferred embodiments of the invention and are not intended to limit the invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A group-plate sludge filter press, characterized in that, The device includes a frame (1) and a filter press device mounted on the frame (1). The frame (1) includes a side beam (101). An end frame (102), a movable frame (103), an extrusion end plate (104), and the filter press device are arranged sequentially from the first end to the last end of the side beam (101). The filter press device includes a plurality of filter press components (2) disposed between the extrusion end plate (104) and the end frame (102) at the last end. A middle push plate (105) is provided between the extrusion end plate (104) and the end frame (102) at the last end to divide the plurality of filter press components (2). The extrusion end plate (104) and the end frame (102) at the tail end are connected by a connecting chain (203), and the middle push plate (105) and several filter press components (2) are all connected to the connecting chain (203); The mobile frame (103) is provided with a power mechanism A, which is used to drive the extrusion end plate (104) to slide along the length direction of the side beam (101); The frame (1) is provided with a power mechanism B, which is used to drive the movable frame (103) and the middle push plate (105) to move along the length direction of the side beam (101); The filter press assembly (2) includes a plate frame (201), which is connected to a connecting chain (203). A filter plate is provided on the plate frame (201), and the plate frame (201) is slidably disposed on the side beam (101) along the length direction of the side beam (101). A filter cloth (202) is provided on one side of the filter plate. The filter press device also includes a filter cloth driving assembly (3), which is used to drive the filter cloth (202) to move and set. The filter cloth drive assembly (3) includes filter cloth drive shafts (302) disposed at the top and bottom of the plate frame (201). Filter cloth drive sprockets (303) are disposed near both ends of the filter cloth drive shafts (302). The filter cloth (202) is connected end-to-end to two filter cloth drive chains (304). The two filter cloth drive chains (304) cooperate with the two filter cloth drive sprockets (303). The end frame (102) at the beginning and the end... Each end frame (102) is equipped with a power mechanism C (305). The power mechanism C (305) on the first end end frame (102) is used to drive the filter cloth drive shaft (302) between the extrusion end plate (104) and the tail end end frame (102) to rotate. The power mechanism C (305) on the tail end end frame (102) is used to drive the filter cloth drive shaft (302) between the middle push plate (105) and the tail end end frame (102) to rotate. The power mechanism C (305) includes a motor reducer (3051) mounted on the end frame (102). The output shaft of the motor reducer (3051) is connected to the input shaft of the commutator (3052) via a coupling. The output shaft of the commutator (3052) is connected to the spline shaft (3053) via a universal joint. A filter cloth gearbox is mounted on the plate frame (201). The filter cloth gearbox contains a filter cloth driving gear (3056) and a filter cloth driven gear (3057) that mesh with each other. The spline shaft (3053) is splinedly engaged with the filter cloth driving gear (3056). The filter cloth driven gear (3057) is coaxially fixed with the filter cloth transmission shaft (302). The end of the spline shaft (3053) is supported on the side beam (101). The filter cloth gearbox also includes a gearbox body (3055), the filter cloth driving gear (3056) and the filter cloth driven gear (3057) are both helical gears, and the filter cloth driving gear (3056) and the filter cloth driven gear (3057) are axially distributed at a 90-degree angle. The filter cloth driving gear (3056) is set in the gearbox body (3055) through a spherical bearing (3058). The power mechanism B includes a hydraulic cylinder, which includes a head cylinder (204) and a tail cylinder (205). The two ends of the head cylinder (204) are respectively connected to the moving frame (103) and the middle push plate (105), and the two ends of the tail cylinder (205) are respectively connected to the middle push plate (105) and the tail end frame (102). A roller assembly (207) is provided on the side beam (101). The roller assembly (207) is used to support the hydraulic cylinder from the bottom. The roller assembly (207) includes a roller (2071), a lever (2072), a disc spring sleeve (2073), a disc spring (2074), an adjusting rod (2075), and a roller shell (2077). The roller (2071) is located at one end of the lever (2072) and is used to support the hydraulic cylinder. The lever (2072) is hinged to the roller shell (2077). The other end of the lever (2072) is hinged to a disc spring sleeve hinge seat (2078). A disc spring sleeve (2073) is provided at the other end of the disc spring sleeve hinge seat (2078). The other end of the disc spring cylinder (2073) is provided with an adjusting rod hole. One end of the adjusting rod (2075) passes through the adjusting rod hole and is inserted into the disc spring cylinder (2073). The adjusting rod (2075) inserted into the disc spring cylinder (2073) is provided with a plurality of disc springs (2074). One end of the plurality of disc springs (2074) abuts against the abutting part of one end of the adjusting rod (2075). The other end of the plurality of disc springs (2074) abuts against the other end of the disc spring cylinder (2073). The other end of the adjusting rod (2075) passes through the adjusting seat (2076) on the roller shell (2077). The other end of the adjusting rod (2075) is threaded with an adjusting nut (2079). The filter cloth drive assembly (3) further includes a detection module (306), which includes a detection shaft (3061), an encoder (3062), and a rotary limit switch (3063). The output shaft of the motor reducer (3051) drives the detection shaft (3061) to rotate via chain drive. The two ends of the detection shaft (3061) are connected to the rotating shaft of the encoder (3062) and the rotating shaft of the rotary limit switch (3063) respectively via couplings. The encoder (3062) is used to detect the position of the filter cloth (202) by detecting the rotation of the detection shaft (3061) and upload the position information to the host computer to realize real-time detection of the position of the filter cloth (202). The rotary limit switch (3063) is used to control the upper and lower limits of the travel of the filter cloth (202) by controlling the rotation travel of the detection shaft (3061). The filter press device also includes a filter cloth cleaning assembly (4), which is used to clean the filter cloth (202). The filter cloth cleaning assembly (4) includes a cleaning nozzle (401) disposed at the bottom of the plate frame (201). The cleaning nozzle (401) has several nozzles on the side facing the filter cloth (202). The cleaning nozzle (401) is connected to the cleaning main pipe (403) disposed on the side beam (101) through the cleaning hose (402).

2. The group-opening sludge filter press according to claim 1, characterized in that, The power mechanism A includes a hydraulic cylinder (107). The two sides of the mobile frame (103) are supported on the side beam (101) by support wheels (106). The wheel surface of one support wheel (106) is a plane, and the wheel surface of the other support wheel (106) is a V-shaped surface.

3. A group-plate sludge filter press according to claim 1, characterized in that, The mobile frame (103) is provided with a locking device (5), which includes a locking stop block (501), a locking cylinder (502), an opening locking plate (503), and a closing locking plate (504). The locking stop block (501) is provided on the side beam (101); The opening plate locking plate (503) is hinged to one end of the moving frame (103) near the extrusion end plate (104), and the closing plate locking plate (504) is hinged to one end of the moving frame (103) away from the extrusion end plate (104). The hinge shafts of the opening plate locking plate (503) and the closing plate locking plate (504) are coaxially fixed. The locking cylinder (502) is mounted on the moving frame (103) and drives the opening plate locking plate (503) and the closing plate locking plate (504) to swing. When the plates are closed, the locking cylinder (502) drives the plate closing locking plate (504) to swing and abut against the rear end of the locking stop block (501); when the plates are opened, the locking cylinder (502) drives the plate opening locking plate (503) to swing and abut against the rear end of the locking stop block (501).

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