Filter press filtering mechanism for sludge dewatering

Abstract

The invention provides a filter press filtering mechanism for sludge dewatering, which comprises a plurality of groups of filter plate assemblies, each single filter plate assembly comprises a left filter plate and a right filter plate, the outer ends of the left filter plate and the right filter plate are respectively provided with a filter frame, the inner ends of the left filter plate and the right filter plate are respectively clamped with a filter cloth body, a distributor is communicated between the filter plate assemblies, and the distributor is communicated with the filter plate assemblies. The filter cake treatment assembly comprises bosses located at the outer ends of the left filter plate and the right filter plate, embedded cylinders are arranged at the inner ends of the bosses, embedded grooves are formed in the inner ends of the embedded cylinders, table rods are arranged at the inner ends of the embedded grooves, and multiple sets of movable table blocks are fixed to the outer ends of the table rods; an embedded spring is arranged between each group of movable table blocks and the embedded cylinder, and a fixed arc-shaped block is arranged at the rear end of the table rod. The problems that the filter cakes for sludge dewatering cannot be rapidly treated and discharged, so that the filter cakes are left on the filter cloth, secondary filtration is affected, the filter cloth needs to be taken down for cleaning, and the complex procedure of cleaning the filter cloth is caused are solved.

Description

Technical Field

[0001] The invention relates to the technical field of filter press filtration, in particular to a filter press filtration mechanism for sludge dehydration. Background Art

[0002] The filtration mechanism of a filter press used for sludge dewatering primarily consists of filter plates, filter cloth, and a plate movement mechanism. Some filter presses also incorporate an extrusion diaphragm. The filter plate, one of the core components of a filter press, is typically made of high-strength engineering plastics or metal, offering excellent pressure and corrosion resistance. Its surface is often designed with grooves or raised patterns to increase the filtration area and improve filtration efficiency. The filter plate supports the filter cloth and forms the filter chamber within the filter press. The filter cloth is a porous filter medium, typically made of natural or synthetic fibers such as cotton, nylon, and polyester. The pore size and porosity of the filter cloth determine its filtration accuracy and speed. The filter cloth filters and retains solid particles within the filter press. During the filtration process, water from the sludge is expelled through the pores of the filter cloth, while solid particles are trapped on its surface, forming a filter cake.

[0003] In the prior art, during the use of the filter press:

[0004] (1) The filter cake after sludge dehydration cannot be quickly processed and discharged, resulting in residual filter press on the filter cloth, affecting the secondary filtration;

[0005] (2) The filter cloth needs to be removed for cleaning, which results in a complicated procedure for cleaning the filter cloth;

[0006] Therefore, we have made improvements to this and proposed a filter press filtering mechanism for sludge dewatering. Summary of the Invention

[0007] The purpose of the present invention is to: address the current design of filter press filtration, which cannot quickly process and discharge the filter cake, resulting in residual filter cake on the filter cloth after sludge filtration, affecting secondary filtration. The filter cloth needs to be removed for cleaning, resulting in a complicated procedure for cleaning the filter cloth.

[0008] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0009] The invention discloses a filter press filtering mechanism for sludge dewatering, which can improve the above problems.

[0010] The specific application is as follows:

[0011] A filter press filter mechanism for sludge dewatering, comprising a plurality of filter plate assemblies, wherein a single filter plate assembly comprises a left filter plate and a right filter plate, wherein the outer ends of the left filter plate and the right filter plate are respectively provided with a filter frame, and the inner ends of the left filter plate and the right filter plate are respectively clamped with a filter cloth body, and a material distributor is connected between the filter plate assemblies, and further comprising:

[0012] The filter cake processing assembly is used for pressing and quickly unloading the filter cake. The filter cake processing assembly includes a boss located at the outer end of the left filter plate and the right filter plate, the inner end of the boss is provided with an embedded cylinder, the inner end of the embedded cylinder is provided with an embedded groove, the inner end of the embedded groove is provided with a platform rod, and multiple groups of movable blocks are fixed to the outer end of the platform rod. An embedded spring is provided between each group of movable blocks and the embedded cylinder, the rear end of the platform rod is provided with a fixed arc block, the rear end of the fixed arc block is provided with a movable arc block and a movable arc groove, the rear end of the movable arc block and the movable arc groove are provided with a linkage rod, the left end of the linkage rod is provided with a toothed rod, the outer end of the toothed rod is provided with a linkage gear and a linkage rotating rod, and the two ends of the linkage rod are respectively provided with linkage grooves.

[0013] As the preferred technical solution of this application, the boss is fixed at the outer ends of the left filter plate and the right filter plate, and the movable block slides along the boss through the embedded cylinder. The embedded cylinder passes through the outer end of the boss, and the rear end of the embedded cylinder is connected with the embedded groove. A fixing rod is provided at the rear end of the embedded groove, and the fixing rod is adhered to the outer side of the filter cloth body. The boss is adhered to the outer end of the fixing rod, and the fixing rod is fixedly connected to the left filter plate, and the fixing rod is fixedly connected to the right filter plate.

[0014] As the preferred technical solution of the present application, the table rods and the movable table blocks are fixedly connected, through openings are provided between the bosses arranged in the same vertical direction, and the movable table blocks arranged in the same vertical direction are connected by a group of table rods.

[0015] As the preferred technical solution of this application, the fixed arc blocks are arranged at equal intervals on the rear end outer surface of a group of table rods, the movable arc blocks are arranged at equal intervals on the front end outer surface of the linkage rod, the movable arc grooves are arranged adjacent to the movable arc blocks, and the movable arc grooves are embedded in the front end outer surface of the linkage rod.

[0016] As the preferred technical solution of this application, the toothed rod is fixed at the left end of the linkage rod, the front end of the toothed rod is meshed with the linkage gear, the linkage gear is fixedly connected to the linkage rotating rod, the linkage gear and the toothed rod are arranged in groups, and both ends of the toothed rod and the linkage rod slide along the linkage grooves at both ends.

[0017] As a preferred technical solution of the present application, a linkage rotating rod runs through the middle of multiple sets of linkage gears, and a rotating rod motor is provided at the lower end of the linkage rotating rod.

[0018] As a preferred technical solution of the present application, it also includes a filter cloth tensioning assembly, which is used to automatically tension the filter cloth that has loosened after long-term use. The filter cloth tensioning assembly includes linkage strips and connecting cloth located at both ends of the filter cloth body. The outer end of the connecting cloth is wrapped with a linkage shaft, and displacement sensors are fixed between the filter cloth and the left filter plate, and between the filter cloth and the right filter plate.

[0019] As the preferred technical solution of the present application, the linkage strips are arranged in two groups along the left and right sides of the filter cloth body, and each group of linkage strips is provided with two strips along the front and back sides of the filter cloth body. The outer ends of the two linkage strips are fixed to each other with a group of connecting cloths, and the outer ends of the connecting cloths are fixedly connected to the linkage shafts. The lower ends of the left and right groups of linkage shafts are connected to each other through racks and gears, and the bottom end of the linkage shaft is connected to a linkage motor, and the linkage motor and the displacement sensor are connected through controller signals.

[0020] As the preferred technical solution of the present application, it also includes a gas-liquid flow component for filtrate discharge and ventilation and drying of the filter cloth. The gas-liquid flow component includes a filtrate discharge structure and a ventilation structure. The filtrate discharge structure includes a liquid outlet pipe located at the lower ends of the left filter plate and the right filter plate and a chamber for filtrate flow. The ventilation structure includes a ventilation duct and an airflow distribution duct located at the upper ends of the left filter plate and the right filter plate.

[0021] As the preferred technical solution of the present application, the chamber is located between the left filter plate and the right filter plate, the liquid outlet pipe is divided into a multi-component pipe and a group of main pipes, the multi-component pipes are arranged at equal intervals at the lower ends of the left filter plate and the right filter plate, a group of main pipes and the multi-component pipes are connected through, the ventilation duct is divided into a multi-component air duct and a group of main air ducts, the multi-component air duct and the group of main air ducts are horizontally penetrated, the air outlet end of the multi-component air duct is connected to the airflow distribution pipe, the outer end of the multi-component air duct is provided with a groove, and the inner end of the groove is threadedly connected to a windshield.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] In the scheme of this application:

[0024] 1. Through efficient sludge dewatering, filtration and filter cake treatment, the filter cake treatment component can re-extrude the filter blocks and quickly discharge them in the later stage of sludge filtration, thus improving the filtration efficiency and filter cake treatment capacity;

[0025] 2. The filter cloth tensioning assembly can automatically detect filter cloth looseness and tighten it in time to ensure the comprehensiveness and stability of sludge filtration and improve filtration quality;

[0026] 3. The gas-liquid flow assembly facilitates the cleaning and drying of the filter cloth, extending its service life. It also helps to keep the equipment clean and reduce malfunctions.

[0027] 4. The sealing of moving parts by seals and the reasonable connection and arrangement design of each component ensure the reliability and stability of equipment operation and reduce equipment maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of a filter press filtration mechanism for sludge dewatering provided in this application;

[0029] Figure 2 This is an enlarged structural diagram of a single filter plate assembly of a filter press filtration mechanism for sludge dewatering provided in this application;

[0030] Figure 3 This is a schematic diagram of the disassembled structure of a single filter plate assembly of a filter press filtration mechanism for sludge dewatering provided in this application;

[0031] Figure 4 This is a schematic diagram of the enlarged structure of the right filter plate liquid outlet end of the filter mechanism of a filter press for sludge dewatering provided in this application;

[0032] Figure 5 This is a schematic diagram of the overall cross-sectional top view of a filter plate of a filter mechanism of a filter press for sludge dewatering provided in this application;

[0033] Figure 6 A schematic diagram of a side cross-sectional structure of an embedded groove of a filter mechanism of a filter press for sludge dewatering provided in this application;

[0034] Figure 7 A schematic diagram of a side cross-sectional structure of a ventilation duct of a filter mechanism of a filter press for sludge dehydration provided in this application;

[0035] Figure 8 This is a schematic side cross-sectional view of a distributor of a filter mechanism of a filter press for sludge dewatering provided in this application;

[0036] Figure 9 The present application provides a filter press filter mechanism for sludge dewatering Figure 5 A schematic diagram of a top view of a local structure;

[0037] Figure 10 This is a schematic diagram of the split structure of the ventilation duct and air flow distribution duct of the filter mechanism of a filter press for sludge dewatering provided in this application.

[0038] Markings in the figure:

[0039] 1. Filter plate assembly; 2. Left filter plate; 3. Right filter plate; 4. Filter frame; 5. Boss; 6. Embedded groove; 7. Linkage rod; 8. Toothed rod; 9. Linkage groove; 10. Linkage gear; 11. Linkage rotating rod; 12. Movable table block; 13. Table rod; 14. Fixed arc block; 16. Movable arc block; 17. Movable arc groove; 18. Liquid outlet pipe; 19. Chamber; 20. Ventilation duct; 21. Air flow distribution pipe; 22. Distributor; 23. Embedded spring; 24. Embedded cylinder; 25. Linkage strip; 26. Connecting cloth; 27. Linkage rotating shaft; 28. Displacement sensor. DETAILED DESCRIPTION

[0040] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in 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 part of the embodiments of the present invention, not all of them.

[0041] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features and technical solutions in the embodiments can be combined with each other in the absence of conflict.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0043] like Figures 1-10 As shown, this embodiment proposes a filter press filtration mechanism for sludge dewatering, including multiple groups of filter plate assemblies 1, a single filter plate assembly 1 includes a left filter plate 2 and a right filter plate 3, the outer ends of the left filter plate 2 and the right filter plate 3 are respectively provided with a filter frame 4, the inner ends of the left filter plate 2 and the right filter plate 3 are respectively clamped with a filter cloth body, a material distributor 22 is connected between the filter plate assemblies 1, and further includes:

[0044] The filter cake processing assembly is used for filtering and quickly unloading the filter cake. The filter cake processing assembly includes a boss 5 located at the outer ends of the left filter plate 2 and the right filter plate 3. The inner end of the boss 5 is provided with an embedded cylinder 24, the inner end of the embedded cylinder 24 is provided with an embedded groove 6, the inner end of the embedded groove 6 is provided with a platform rod 13, and the outer end of the platform rod 13 is fixed with multiple groups of movable blocks 12. An embedded spring 23 is provided between each group of movable blocks 12 and the embedded cylinder 24. The rear end of the platform rod 13 is provided with a fixed arc block 14, the rear end of the fixed arc block 14 is provided with a movable arc block 16 and a movable arc groove 17, the rear ends of the movable arc block 16 and the movable arc groove 17 are provided with a linkage rod 7, the left end of the linkage rod 7 is provided with a toothed rod 8, the outer end of the toothed rod 8 is provided with a linkage gear 10 and a linkage rotating rod 11, and the two ends of the linkage rod 7 are respectively provided with linkage grooves 9.

[0045] The sludge is evenly injected through the distributor 22, and the filter plate is squeezed and filtered. The filter cake processing component can push the filter block to move and squeeze again, and the embedded spring 23 is used to facilitate rebound. The various components work together to improve the filtration efficiency and filter cake processing capacity.

[0046] The boss 5 is fixed to the outer ends of the left filter plate 2 and the right filter plate 3, and the movable block 12 slides along the boss 5 through the embedded cylinder 24. The embedded cylinder 24 passes through the outer end of the boss 5, and the rear end of the embedded cylinder 24 is connected with the embedded groove 6. The rear end of the embedded groove 6 is provided with a fixing rod, which is adhered to the outer side of the filter cloth body. The boss 5 is adhered to the outer end of the fixing rod, and the fixing rod is fixedly connected to the left filter plate 2, and the fixing rod is fixedly connected to the right filter plate 3.

[0047] The platform rods 13 are fixedly connected to the movable platform blocks 12 . Through openings are provided between the bosses 5 arranged in the same vertical direction. The movable platform blocks 12 arranged in the same vertical direction are connected through a group of platform rods 13 .

[0048] The connection relationship between the same vertically arranged components can ensure the overall function of the filter cake processing assembly. This connection method helps to achieve the coordination of the actions of the various parts of the filter cake processing assembly and improve the overall work efficiency.

[0049] The fixed arc blocks 14 are arranged at equal intervals on the rear end outer surface of a group of platform rods 13, the movable arc blocks 16 are arranged at equal intervals on the front end outer surface of the linkage rod 7, and the movable arc grooves 17 are arranged adjacent to the movable arc blocks 16, and the movable arc grooves 17 are embedded in the front end outer surface of the linkage rod 7.

[0050] The toothed rod 8 is fixed to the left end of the linkage rod 7, the front end of the toothed rod 8 is meshed with the linkage gear 10, the linkage gear 10 is fixedly connected to the linkage rotating rod 11, the linkage gear 10 and the toothed rod 8 are arranged in groups, and both ends of the toothed rod 8 and the linkage rod 7 slide along the linkage grooves 9 at both ends.

[0051] The linkage rotating rod 11 passes through the middle of the multiple sets of linkage gears 10 , and a rotating rod motor is provided at the lower end of the linkage rotating rod 11 .

[0052] The coordination relationship between the toothed rod 8, the linkage gear 10 and other components realizes power transmission and component movement. This coordination mode can effectively transmit the power of the rotary rod motor and accurately control the left and right movement of the linkage rod 7, thereby achieving effective treatment of the filter block.

[0053] The reciprocating rotation of the rotating rod motor can effectively push the toothed rod 8 and the linkage rod 7 to move, thereby enhancing the adaptability and functionality of the device;

[0054] During use, sludge is injected into each chamber 19 through the distributor 22, and the liquid flows out from the corresponding liquid outlet pipe 18 under the squeezing of the corresponding left filter plate 2 and right filter plate 3. When the liquid outflow rate becomes slow, the rotation of the rotating rod motor drives the toothed rod 8 on the outside of the linkage rotating rod 11 to move left and right along the linkage groove 9. In the process of the toothed rod 8 moving left and right along the linkage groove 9, the linkage rod 7 located at the outer end of the toothed rod 8 moves left and right at the rear end of the platform rod 13, and the fixed arc block 14 at the rear end of the platform rod 13 contacts the movable arc groove 17 and the movable arc block 16 at the front end of the linkage rod 7 in sequence, driving the movable platform block 12 at the front end of the platform rod 13 to move back and forth under the linkage of the boss 5 and the embedded cylinder 24, which can promote the movement and re-squeeze of the filter block. During the movement of the platform rod 13, it moves under the elasticity of the embedded spring 23 between each movable platform block 12 and the embedded cylinder 24, which is convenient for rebound.

[0055] During this process, the movement of the table rod 13, the movable table block 12 and the boss 5 can prevent sludge from entering the movable parts. Each movable part adopts a sealing member to perform a sealed movable connection. For example, the rotating seal adopts a bearing, a sealing gasket, a magnetic fluid seal or a planetary reducer, and the movable seal adopts a sealing rubber ring. The sealing here is not limited as long as it can prevent sludge from entering the movable parts during the filtration process.

[0056] The rotating rod motor here can achieve reciprocating rotation, such as: a DC brushed motor (which changes the direction of the current in the winding through the brush to achieve continuous rotation of the rotor coil, and can achieve reciprocating rotation through the control circuit), a servo motor (which has the characteristics of high precision, high response speed, etc., and can achieve precise reciprocating rotation through the control signal, by driving the upper end of the linkage rotating rod 11 to perform a certain number of clockwise and counterclockwise rotations), pushing the toothed rod 8 to move left and right in the linkage slot 9, and then pushing the linkage rod 7 to move left and right.

[0057] like Figure 5 and Figure 9As shown, as a preferred embodiment, on the basis of the above method, it further includes a filter cloth tensioning assembly for automatically tensioning the filter cloth that becomes loose after long-term use. The filter cloth tensioning assembly includes a linkage bar 25 and a connecting cloth 26 located at both ends of the filter cloth body. The outer end of the connecting cloth 26 is wrapped with a linkage shaft 27, and a displacement sensor 28 is fixed between the filter cloth and the left filter plate 2, and between the filter cloth and the right filter plate 3.

[0058] When the displacement sensor 28 senses that the filter cloth is loose, the linkage motor drives the linkage shaft 27 to rotate through the rack and gear, automatically tightening the filter cloth to ensure stable and comprehensive filtration;

[0059] Based on the signal interaction between the sensor and the motor, the tension of the filter cloth can be accurately controlled to ensure that the filtering effect is always in good condition.

[0060] The linkage bars 25 are arranged in two groups along the left and right sides of the filter cloth body. Each group of linkage bars 25 is provided with two linkage bars along the front and back sides of the filter cloth body. The outer ends of the two linkage bars 25 are fixed to each other with a group of connecting cloths 26. The outer ends of the connecting cloths 26 are fixedly connected to the linkage shafts 27. The lower ends of the left and right groups of linkage shafts 27 are connected to each other through racks and gears. The bottom end of the linkage shaft 27 is connected to a linkage motor, and the linkage motor and the displacement sensor 28 are connected through controller signals.

[0061] When the filter cloth tensioning assembly needs to be used, the displacement sensor 28 must be sensing movement between the filter cloth body and the left filter plate 2 or the right filter plate 3. The reason for this movement must be that the filter cloth body and the left filter plate 2 or the right filter plate 3 are loose. Such looseness can easily lead to incomplete sludge filtration. Therefore, when the displacement sensor 28 generates a signal, it transmits the signal to the linkage motor, which drives the linkage shaft 27 connected to the rack and gear to rotate, driving the two sides of the same filter cloth body to simultaneously reel in the connecting cloth 26, thereby pushing the filter cloth body to be tensioned in the left filter plate 2 or the right filter plate 3, thereby ensuring stable and comprehensive filtration.

[0062] The displacement sensor 28 here can adopt the small rope displacement sensor 28 of TE Connectivity SM1 series (principle: the mechanical structure or electronic components inside the sensor are driven to produce corresponding changes through the expansion and contraction of the rope, thereby measuring the displacement);

[0063] The signal transmission control principle between the displacement sensor 28 and the linkage motor is mainly based on the sensor's measurement of displacement and its interaction with the motor control signal. The control instructions (such as pulse signals, voltage signals, etc.) generated by the controller are transmitted to the linkage motor through devices such as the driver. The driver amplifies and converts the control instructions to drive the linkage motor to move according to the instructions. For example, for a stepper motor, the driver will control the number of steps and direction of the stepper motor according to the pulse signal and direction signal transmitted by the controller; for a servo motor, the driver will control the speed and torque of the servo motor according to the voltage or current signal transmitted by the controller, thereby achieving precise control of the object's displacement. During the movement of the motor, the displacement sensor 28 will continue to monitor the displacement changes of the object in real time and feed back the new displacement signal to the controller. The controller will calculate and analyze again based on the new displacement feedback signal to determine whether the motor's movement has reached the expected target; if there is a deviation, the controller will adjust the control instruction in time to make the motor's movement more precise until the object's displacement reaches the set target value;

[0064] The linkage motor and displacement sensor 28 here only need to monitor the looseness of the filter cloth body and transmit signals to the linkage motor to control the re-tensioning of the filter cloth body.

[0065] like Figure 7 and Figure 10 As shown, as a preferred embodiment, on the basis of the above method, it further includes a gas-liquid flow component for filtrate discharge and ventilation and drying of the filter cloth, the gas-liquid flow component includes a filtrate discharge structure and a ventilation structure, the filtrate discharge structure includes a liquid outlet pipe 18 located at the lower end of the left filter plate 2 and the right filter plate 3 and a chamber 19 for filtrate flow, the ventilation structure includes a ventilation duct 20 and an airflow distribution duct 21 located at the upper end of the left filter plate 2 and the right filter plate 3.

[0066] After the filtration is completed, the filter cloth can be cleaned and dried through this component to ensure the cleanliness and performance of the filter cloth, which is conducive to the next filtration work.

[0067] The chamber 19 is located between the left filter plate 2 and the right filter plate 3. The liquid outlet pipe 18 is divided into a multi-component pipe and a group of main pipes. The multi-component pipes are arranged at equal intervals at the lower ends of the left filter plate 2 and the right filter plate 3. A group of main pipes are connected through the multi-component pipes. The ventilation duct 20 is divided into a multi-component air duct and a group of main air ducts. The multi-component air duct and a group of main air ducts are horizontally penetrated, and the air outlet end of the multi-component air duct is connected through the airflow distribution pipe 21. The outer end of the multi-component air duct is provided with a groove, and the inner end of the groove is threadedly connected to a windshield.

[0068] When the filter block is completely removed and the secondary filtrate is completed, each filter cloth body needs to be cleaned. In this process, cleaning water is directly injected through the distributor 22 to flush the inside of the chamber 19, and the cleaning water is output through the filtrate discharge structure. After the water flow is completely output, each filter cloth body can be dried through the ventilation structure. However, if the filter cloth body has not been cleaned before drying, the air inlet of the ventilation structure can also be connected to the pipe for injecting liquid. This connection can be controlled by a control device. The control device adopts the control technology of the two-way valve of the existing technology. The filter cloth body is fully cleaned by injecting liquid into the ventilation structure, and then the air is injected through the ventilation structure through the valve to dry the filter cloth body.

[0069] Specific embodiments of the filter press filter assembly of the present application are as follows:

[0070] Example 1: Daily continuous sludge filtration operation

[0071] (1) Preparation stage:

[0072] Check the filter press filter mechanism components to ensure that the filter plate assembly 1 (left filter plate 2, right filter plate 3, filter frame 4, filter cloth body) is installed correctly, the filter cloth body is clamped on the inner ends of the left and right filter plates 3, and the filter plate assemblies 1 are connected normally through the distributor 22;

[0073] Confirm that all components of the filter cake processing assembly are firmly connected, that the boss 5 is fixed to the outer ends of the left and right filter plates 3, that the movable block 12 can slide freely within the boss 5 via the embedded cylinder 24, that all components are tightly connected, and that the embedded spring 23 is in a normal elastic state; that the transmission components such as the linkage rod 7, toothed rod 8, linkage gear 10, and linkage rotating rod 11 are in place, and that the rotating rod motor is in normal standby mode;

[0074] Check the filter cloth tensioning assembly, the linkage bar 25, the connecting cloth 26, and the linkage shaft 27 are installed correctly, the displacement sensor 28 is fixed between the filter cloth and the left and right filter plates 3 and can work normally, and the linkage motor and the displacement sensor 28 are connected normally through the controller signal;

[0075] The filtrate discharge structure (liquid outlet pipe 18, chamber 19) and ventilation structure (ventilation pipe 20, air flow distribution pipe 21, wind shield) of the gas-liquid flow component are not blocked, and the pipes are tightly connected.

[0076] (2) Filtration stage:

[0077] Sludge is evenly injected into each chamber 19 through the distributor 22. The left filter plate 2 and the right filter plate 3 squeeze the sludge, and the liquid flows out from the corresponding liquid outlet pipe 18, starting the sludge filtration process.

[0078] As the filtration progresses, when the liquid outflow rate slows down, the rotary rod motor is started, which drives the linkage rotary rod 11 to rotate. The toothed rod 8 on the outside of the linkage rotary rod 11 moves left and right along the linkage groove 9, thereby driving the linkage rod 7 to move left and right at the rear end of the platform rod 13. The fixed arc block 14 at the rear end of the platform rod 13 contacts the movable arc groove 17 and movable arc block 16 at the front end of the linkage rod 7 in sequence, causing the movable platform block 12 at the front end of the platform rod 13 to move back and forth under the linkage of the boss 5 and the embedded cylinder 24, pushing the filter cake to move and squeeze again. At the same time, the movable platform block 12 is easy to rebound during movement due to the action of the embedded spring 23, thereby improving the filter cake processing effect.

[0079] (3) Filter cloth tensioning stage:

[0080] During the filtration process, the displacement sensor 28 monitors the displacement between the filter cloth and the left filter plate 2 or the right filter plate 3 in real time. If the filter cloth becomes loose, the displacement sensor 28 senses the movement between the filter cloth and the filter plate and transmits a signal to the linkage motor.

[0081] After receiving the signal, the linkage motor drives the linkage shaft 27 connected by the rack and gear to rotate, driving the connecting cloth 26 on both sides of the same filter cloth body to reel up at the same time, so that the filter cloth body is tensioned in the left filter plate 2 or the right filter plate 3, ensuring stable and comprehensive filtration.

[0082] (4) Cleaning and drying stage:

[0083] When the filter block is completely removed and the secondary filtrate is completed, the cleaning water is directly injected through the distributor 22, and the cleaning water flushes the interior of the chamber 19, and then is collected into the main pipe through the multi-component pipes of the filtrate discharge structure and discharged;

[0084] After the water flow is completely output, the filter cloth body is dried by the ventilation structure. The air in the ventilation duct 20 is turned on, and the air enters the air distribution duct 21 through the multi-component air duct to ventilate and dry the filter cloth body, preparing for the next filtration.

[0085] Example 2: Complex sludge filtration and deep cleaning of filter cloth:

[0086] (1) Preparation stage:

[0087] In the same preparation stage as in Example 1, a comprehensive inspection is conducted on all components of the filter mechanism of the filter press to ensure that the equipment is in the best working condition, especially the sealing condition of the seals on the active parts to ensure that sludge does not enter the active parts and affect the operation of the equipment.

[0088] (2) Filtration stage:

[0089] The distributor 22 injects sludge with complex components into the chamber 19, and the left and right filter plates 3 squeeze the sludge for filtration. Due to the complex composition of the sludge, the filtration is more difficult, and the liquid outflow rate may be faster or slower;

[0090] When the liquid outflow rate slows down, the rotating rod motor starts, and through the transmission of the linkage rotating rod 11, the toothed rod 8, the linkage gear 10 and other components, the linkage rod 7 drives the platform rod 13 and the movable platform block 12 to move, and the filter block is squeezed and moved multiple times to ensure sufficient filtration and improve the filter cake processing efficiency;

[0091] When sludge filtration is difficult, liquid can be injected through the ventilation structure to dilute the sludge in the chamber 19, thereby accelerating the sludge filtration speed in the chamber 19.

[0092] (3) Filter cloth tensioning stage:

[0093] Due to the complexity of the sludge, the filter cloth is under greater pressure and is more likely to loosen. Once the displacement sensor 28 detects the displacement change between the filter cloth body and the filter plate, it immediately transmits the signal to the linkage motor;

[0094] The linkage motor responds quickly and drives the linkage shaft 27 to rotate through the rack and gear transmission, quickly tightening the filter cloth to maintain the stability and effectiveness of the filtration and prevent incomplete sludge filtration due to loose filter cloth.

[0095] (4) Cleaning and drying stage

[0096] After the filtration is completed, a large amount of cleaning water is first injected through the distributor 22 to preliminarily rinse the chamber 19 and the filter cloth body, and the flushing water is discharged through the filtrate discharge structure.

[0097] If the filter cloth body is still not clean after the initial flushing, the air inlet of the ventilation structure is connected to the liquid injection pipe through the control device, and the two-way valve control technology is used to inject special cleaning liquid into the ventilation structure to perform a comprehensive and deep cleaning of the filter cloth body.

[0098] After cleaning, close the liquid injection pipe, open the ventilation valve, and dry the filter cloth through the ventilation structure to ensure that the filter cloth recovers its good performance and can be put into the next filtering work.

[0099] When the present application is in use: in use, sludge is injected into each chamber 19 through the distributor 22, and the liquid flows out from the corresponding liquid outlet pipe 18 under the squeezing of the corresponding left filter plate 2 and the right filter plate 3. When the liquid outflow rate becomes slow, the rotation of the rotating rod motor drives the toothed rod 8 on the outer side of the linkage rotating rod 11 to move left and right along the linkage groove 9. In the process of the toothed rod 8 moving left and right along the linkage groove 9, the linkage rod 7 located at the outer end of the toothed rod 8 moves left and right at the rear end of the platform rod 13, and the fixed arc block 14 at the rear end of the platform rod 13 contacts the movable arc groove 17 and the movable arc block 16 at the front end of the linkage rod 7 in sequence, driving the movable platform block 12 at the front end of the platform rod 13 to move back and forth under the linkage of the boss 5 and the embedded cylinder 24, which can promote the movement of the filter block and squeeze it again. During the movement of the platform rod 13, it is moved under the elasticity of the embedded spring 23 between each movable platform block 12 and the embedded cylinder 24, which is convenient for rebound;

[0100] When the filter cloth tensioning assembly needs to be used, the displacement sensor 28 must be sensing movement between the filter cloth body and the left filter plate 2 or the right filter plate 3. The reason for this movement must be that the filter cloth body and the left filter plate 2 or the right filter plate 3 are loose. Such looseness can easily lead to incomplete sludge filtration. Therefore, when the displacement sensor 28 generates a signal, it transmits the signal to the linkage motor, which drives the linkage shaft 27 connected to the rack and gear to rotate, driving the two sides of the same filter cloth body to simultaneously reel in the connecting cloth 26, thereby pushing the filter cloth body to be tensioned in the left filter plate 2 or the right filter plate 3, thereby ensuring stable and comprehensive filtration.

[0101] When the filter block is completely removed and the secondary filtrate is completed, each filter cloth body needs to be cleaned. In this process, cleaning water is directly injected through the distributor 22 to flush the inside of the chamber 19, and the cleaning water is output through the filtrate discharge structure. After the water flow is completely output, each filter cloth body can be dried through the ventilation structure. However, if the filter cloth body has not been cleaned before drying, the air inlet of the ventilation structure can also be connected to the pipe for injecting liquid. This connection can be controlled by a control device. The control device adopts the control technology of the two-way valve of the existing technology. The filter cloth body is fully cleaned by injecting liquid into the ventilation structure, and then the air is injected through the ventilation structure through the valve to dry the filter cloth body.

[0102] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A filter press filter mechanism for sludge dewatering, comprising a plurality of filter plate assemblies (1), characterized in that: The single filter plate assembly (1) includes a left filter plate (2) and a right filter plate (3), the outer ends of the left filter plate (2) and the right filter plate (3) are respectively provided with a filter frame (4), the inner ends of the left filter plate (2) and the right filter plate (3) are respectively clamped with a filter cloth body, and the filter plate assembly (1) is connected with a distributor (22), and further includes: A filter cake processing assembly is used for filtering and quickly discharging filter cakes. The filter cake processing assembly includes a boss (5) located at the outer end of a left filter plate (2) and a right filter plate (3), an inner end of the boss (5) is provided with an embedded cylinder (24), an inner end of the embedded cylinder (24) is provided with an embedded groove (6), an inner end of the embedded groove (6) is provided with a table rod (13), and the outer end of the table rod (13) is fixed with multiple groups of movable blocks (12), and an embedded spring ( 23), the rear end of the platform rod (13) is provided with a fixed arc block (14), the rear end of the fixed arc block (14) is provided with a movable arc block (16) and a movable arc groove (17), the rear ends of the movable arc block (16) and the movable arc groove (17) are provided with a linkage rod (7), the left end of the linkage rod (7) is provided with a toothed rod (8), the outer end of the toothed rod (8) is provided with a linkage gear (10) and a linkage rotating rod (11), and the two ends of the linkage rod (7) are respectively provided with linkage grooves (9).

2. The filter press filtration mechanism for sludge dewatering according to claim 1, characterized in that: The boss (5) is fixed to the outer ends of the left filter plate (2) and the right filter plate (3); the movable block (12) slides along the boss (5) through the embedded cylinder (24); the embedded cylinder (24) passes through the outer end of the boss (5); the rear end of the embedded cylinder (24) is connected to the embedded groove (6); the rear end of the embedded groove (6) is provided with a fixing rod, the fixing rod is adhered to the outer side of the filter cloth body, the boss (5) is adhered to the outer end of the fixing rod, the fixing rod is fixedly connected to the left filter plate (2), and the fixing rod is fixedly connected to the right filter plate (3).

3. The filter press filtration mechanism for sludge dewatering according to claim 2, characterized in that: The platform rods (13) are fixedly connected to the movable platform blocks (12); through openings are provided between the bosses (5) arranged in the same vertical direction; and the movable platform blocks (12) arranged in the same vertical direction are connected via a group of platform rods (13).

4. The filter press filtration mechanism for sludge dewatering according to claim 3, characterized in that: The fixed arc blocks (14) are arranged at equal intervals on the rear end outer surface of a group of table rods (13); the movable arc blocks (16) are arranged at equal intervals on the front end outer surface of the linkage rod (7); the movable arc grooves (17) are arranged adjacent to the movable arc blocks (16); and the movable arc grooves (17) are embedded in the front end outer surface of the linkage rod (7).

5. The filter press filtration mechanism for sludge dewatering according to claim 4, characterized in that: The toothed rod (8) is fixed to the left end of the linkage rod (7), the front end of the toothed rod (8) is meshed with the linkage gear (10), the linkage gear (10) is fixedly connected to the linkage rotating rod (11), the linkage gear (10) and the toothed rod (8) are arranged in a group, and both ends of the toothed rod (8) and the linkage rod (7) slide along the linkage grooves (9) at both ends.

6. The filter press filtration mechanism for sludge dewatering according to claim 5, characterized in that: The linkage rotating rod (11) runs through the middle of the multiple groups of linkage gears (10), and a rotating rod motor is provided at the lower end of the linkage rotating rod (11).

7. The filter press filtration mechanism for sludge dewatering according to claim 1, characterized in that: The invention also includes a filter cloth tensioning assembly for automatically tensioning the filter cloth when the filter cloth becomes loose after long-term use. The filter cloth tensioning assembly includes a linkage bar (25) and a connecting cloth (26) located at both ends of the filter cloth body. The outer end of the connecting cloth (26) is wound with a linkage shaft (27). Displacement sensors (28) are fixed between the filter cloth and the left filter plate (2), and between the filter cloth and the right filter plate (3).

8. The filter press filtration mechanism for sludge dewatering according to claim 7, characterized in that: The linkage bars (25) are arranged in two groups along the left and right sides of the filter cloth body. Each group of linkage bars (25) is provided with two linkage bars along the front and back sides of the filter cloth body. The outer ends of the two linkage bars (25) are fixed to a group of connecting cloths (26). The outer ends of the connecting cloths (26) are fixedly connected to the linkage shaft (27). The lower ends of the left and right groups of linkage shafts (27) are connected to each other through racks and gears. The bottom ends of the linkage shafts (27) are connected to linkage motors. The linkage motors are connected to the displacement sensors (28) through controller signals.

9. The filter press filtration mechanism for sludge dewatering according to claim 1, characterized in that: The invention also includes a gas-liquid flow component for discharging filtrate and ventilating and drying the filter cloth. The gas-liquid flow component includes a filtrate discharging structure and a ventilation structure. The filtrate discharging structure includes a liquid outlet pipe (18) located at the lower end of the left filter plate (2) and the right filter plate (3) and a chamber (19) for filtrate flow. The ventilation structure includes a ventilation pipe (20) and an air flow distribution pipe (21) located at the upper end of the left filter plate (2) and the right filter plate (3).

10. The filter press filtration mechanism for sludge dewatering according to claim 9, characterized in that: The chamber (19) is located between the left filter plate (2) and the right filter plate (3), the liquid outlet pipe (18) is divided into a multi-component pipe and a group of main pipes, the multi-component pipes are arranged at equal intervals at the lower ends of the left filter plate (2) and the right filter plate (3), the group of main pipes and the multi-component pipes are connected through, the ventilation pipe (20) is divided into a multi-component air duct and a group of main air ducts, the multi-component air duct and the group of main air ducts are horizontally connected, the air outlet end of the multi-component air duct is connected through with the air flow distribution pipe (21), the outer end of the multi-component air duct is provided with a groove, and the inner end of the groove is threadedly connected with a windshield.

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